2020 Hyundai Sonata
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Hyundai › Sonata › 2020
These records cover every 2020 Hyundai Sonata. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
4 recalls name the 2020 Hyundai Sonata. Newest first.
Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.
Risk and remedy
Risk
A melted fuel tank can leak, increasing the risk of a fire.
Remedy
Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software. All repairs will be performed as necessary, free of charge. Owner notification letters were mailed beginning March 13, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 286. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 19, 2025.
Hyundai Motor America (Hyundai) is recalling certain 2020 Sonata and Sonata Hybrid, and 2019 Genesis G70 vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
Risk and remedy
Risk
A person inside the trunk compartment may become trapped, increasing their risk of injury.
Remedy
Dealers will inspect the trunk latch and replace the trunk latch base, as necessary, free of charge. Owner notification letters were mailed May 26, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 221/010G.
Hyundai Motor America (Hyundai) is recalling certain 2020 Nexo and Sonata vehicles. The Remote Smart Parking Assist (RSPA) software may fail to prevent vehicle movement upon detection of an RSPA system malfunction.
Risk and remedy
Risk
Unintended vehicle movement increases the risk of a crash.
Remedy
Hyundai will notify owners, and dealers will reprogram the RSPA software, free of charge. The recall began June 3, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 191.
Hyundai Motor America (Hyundai) is recalling certain 2020 Sonata vehicles produced between October 22, 2019 and February 13, 2020. The tire pressure label inside the driver's door and the owner's manual state an incorrect tire size. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110…
Risk and remedy
Risk
The incorrect tire information may mislead the vehicle owner to install the wrong tire size, potentially affecting vehicle handling, increasing the risk of a crash.
Remedy
Hyundai will notify owners, and dealers will install new label stickers over the tire pressure label and in the owner's manual, free of charge. The recall began April 22, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 190.
Owner complaints
182 complaints5 involved a crash1 involved a fire4 injuries
What owners report most
Latest complaints
- Unknown or other
My car is showing the same issues as the recall 271 campaign 24V-879 but my VIN is not included in the recall. My reverse camera is showing a black screen with the guidelines when the vehicle is put into reverse
- Fuel/propulsion system
The car has strong fuel smell in the cabin when tank is full, It is especially strong after car sits. I have taken to hyundai several times for this problem. They say the computer says nothing is wrong. They refuse to investigate as they dont smell the odor.
- Structure › Body
Upon arriving home I noticed that the paint was missing from the back passenger side & when I left the parking lot before heading home there was no paint missing.
- Engine · Fuel/propulsion system · Service brakes
Vehicle experienced intermittent, severe powertrain defect resulting in a critical safety hazard. Between 30K and 36K miles, the vehicle underwent 3 violent highway deceleration episodes. During these events, the engine began shaking, escalating to violent shaking; with deceleration and coming to…
Vehicle experienced intermittent, severe powertrain defect resulting in a critical safety hazard. Between 30K and 36K miles, the vehicle underwent 3 violent highway deceleration episodes. During these events, the engine began shaking, escalating to violent shaking; with deceleration and coming to a stop, it would shake, then sputter as if it would die. Coming to a complete stop, a total stall was prevented only by the ECM forcing a limp mode lock at 1200 RPMs. When Auto Hold was engaged at this point and my foot was removed from the brake pedal, the mechanical surge caused the vehicle to unexpectedly lurch forward, fighting against and nearly overriding the factory Auto Hold braking safety feature before finally holding. Luckily, no pedestrian was walking in front of my car when this occurred. No check engine light (CEL) or dashboard warning ever illuminated. This safety compromise is directly tied to an ineffective or adjacent remedy involving Service Campaign 9B1 (Opcode 40D219R0) and Safety Recall 286. Under this Opcode, a factory software flash deleted the standard OBD-II trouble code P0451and substituted it with a manufacturer-specific shadow code P14EE00. This software manipulation suppressed universal emission/pressure sensor faults, masking a volatile physical defect within the high pressure fuel delivery and ignition systems. Dealer diagnostics on a running, compromised engine flagged an improper fuel injector pulse and subsequently a failing Cylinder 3 ignition coil. All four injectors were replaced but only one coil, leaving 3 non-updated , factory defective coils in the engine. The vehicle remains an ongoing highway stalling and brake-override hazard due to an incomplete field remedy of a recall-adjacent system. I've filed a Hyundai Complaint with assigned case number 43394228 regarding Safety Recall 286. (Two episodes of the attempted Auto Hold override occurred - first 09/09/2026 and second 09/29/2026.)
- Electrical system
A/C blower motor fan would stop working. Happened twice within less than a year apart. Upon further inspection, multi fuse wiring overheated and melted, ruining fuse and making A/C stop working during 100+ temperatures outside. Apparently this is a well known issue with this make and model Sonata. Electrical failure.
- Engine
The A/C evaporator core and the core seal needs replacing on 2020 Hyundai Sonata. Car is 6 years old. I already have a confirmed diagnosis with a PPM refrigerant leak tester at the condensate drain line The diagnosis is 100% confirmed. The evaporator is leaking heavily—we pulled 274 PPM at the…
The A/C evaporator core and the core seal needs replacing on 2020 Hyundai Sonata. Car is 6 years old. I already have a confirmed diagnosis with a PPM refrigerant leak tester at the condensate drain line The diagnosis is 100% confirmed. The evaporator is leaking heavily—we pulled 274 PPM at the drain tube and 177 PPM inside the cabin behind the glove box so refrigerent has been leaking out of the vents. My wife and I were getting headaches for no reason. Our AC has failed and this problem was discovered as the issue and I am paying out of pocket to fix something that should not have failed and has leaked out refrigerent.
- Electrical system · Power train
I am submitting a safety complaint regarding a recurring, unresolved electrical defect in my 2020 Hyundai Sonata SEL. The vehicle fails to recognize when the ignition is switched off, leaving core vehicle systems active and causing severe parasitic battery drain that leaves the car immobilized.…
I am submitting a safety complaint regarding a recurring, unresolved electrical defect in my 2020 Hyundai Sonata SEL. The vehicle fails to recognize when the ignition is switched off, leaving core vehicle systems active and causing severe parasitic battery drain that leaves the car immobilized. Description of the Problem: False "On" Status: After parking, turning off the engine, and exiting the vehicle, the car continues to register as though the ignition is still active/on (accessories, cluster, or vehicle network remain awake). Severe Parasitic Draw: Because the vehicle fails to shut down its electrical circuits, the 12-volt battery repeatedly discharges overnight or while parked for short durations. Battery Replacement Did Not Resolve Issue: The 12-volt battery was replaced with a brand-new unit to eliminate typical wear, yet the drain and false "on" behavior persisted immediately. Frequency: The vehicle frequently fails to start, requiring constant jump-starts or roadside assistance to operate. Safety Hazard: This defect creates a direct safety risk by repeatedly stranding the driver without warning in public locations, traffic stops, or remote areas. In addition, an electrical system that fails to enter a sleep state creates a potential hazard for component overheating, failure of electronic security and locking systems, or total electrical failure while attempting to restart or operate auxiliary safety equipment. Other Hyundai owners have reported identical issues where the body control modules or ignition logic fail to power down. Corrective Action Requested: I request that the NHTSA investigate this electrical shutdown defect across the 2020 Hyundai Sonata model year to identify whether a faulty Body Control Module (BCM), smart key receiver, or ignition switch relay requires a safety recall and software or hardware remediation. Battery replaced on 09/04/2026 Car inspected/diagnosed by Hyundai Dealership on 09/03/2026
- Electrical system · Forward collision avoidance › Automatic emergency braking · Service brakes
Parking malfunction. Parked, running car moved itself to reverse and backed up a driveway crossing a dirt road and hitting a fence and post. This car could have hit and severely injured anyone who was in the path while it was reversing on its own. Car was in reverse and all parking sensors were blaring when the car was found minutes later.
- Back over prevention › Sensing system › Camera
The reverse camera only shows a black screen and will put drivers in danger while not being able to see behind them while reversing. This needs to be recalled and repaired. Especially in situations where a person is reversing out of a driveway onto a major/busy road. Sometimes it works, but a lot…
The reverse camera only shows a black screen and will put drivers in danger while not being able to see behind them while reversing. This needs to be recalled and repaired. Especially in situations where a person is reversing out of a driveway onto a major/busy road. Sometimes it works, but a lot of the time it is just a black screen with the green, yellow, and red lines to indicate how far your wheel is turned. But it doesn’t allow you to actually SEE where you’re backing up into or the cars coming from either side of you while trying to back out. It’s very dangerous and it seems to a be manufacturer’s defect that needs to be addressed by the company itself, since they’re the ones who made and installed the product incorrectly.
- Electrical system · Unknown or other · Visibility/wiper
Blower motor malfunction at night. Smelled something burning. Extremely hot and humid outside. Windows fogged up inside which greatly reduced visibility. Checked the multifuse which controls the ABS, oil pump, cooling fan, & Blower. I discovered a burnt connection on one of the terminals for the…
Blower motor malfunction at night. Smelled something burning. Extremely hot and humid outside. Windows fogged up inside which greatly reduced visibility. Checked the multifuse which controls the ABS, oil pump, cooling fan, & Blower. I discovered a burnt connection on one of the terminals for the blower. This is a huge safety and fire risk and needs to be addressed ASAP!!!! Upon my research, I’m finding several Hyundai Sonata vehicles having this same exact issue. Kia vehicles are being recalled for this same exact issue. Why isn’t the Hyundai Sonata??
- Seats
The driver's power seat track master assembly (Part#88500-L0030) on my 2020 Hyundai Sonata suffered a catastrophic structural failure while operating. The black plastic bracket housing and aligning the electric drive motor fractured. This caused the motor to pull out of alignment, twisting the…
The driver's power seat track master assembly (Part#88500-L0030) on my 2020 Hyundai Sonata suffered a catastrophic structural failure while operating. The black plastic bracket housing and aligning the electric drive motor fractured. This caused the motor to pull out of alignment, twisting the driver's seat violently sideways and permanently jamming the tracking rails. This is a chronic, repeat safety component failure on this specific VIN. The original factory seat track assembly suffered an identical mechanical failure and was replaced by warranty on 10/3/2023 at 46,369 miles. This second factory replacement unit failed in exactly the same manner on 8/13/2026 at 82,271 miles-lasting only 35,902 miles under normal operating conditions. I weigh 95 pounds. A driver's seat structurally shifting sideways dynamically presents an immediate, severe crash hazard. It instantly alters driver ergonomics, compromises the structural crash-anchoring performance of the seat frame, and potentially restricts pedal access to the brake and accelerator. The manufacturer is actively denying product liability by classifying internal structural breakages of shielded components beneath the cushion as user "damage" rather than an engineering or climate-related material defect. This tracking component must be formally investigated for systemic failure patterns to prevent accidents.
- Electrical system
The AC/heating blower motor circuit on my 2020 Hyundai Sonata failed intermittently due to extreme electrical resistance overheating and melting the terminal pins inside the engine fuse box. I took it to the dealership and they inspected it said it was out of warranty but it needed part number…
The AC/heating blower motor circuit on my 2020 Hyundai Sonata failed intermittently due to extreme electrical resistance overheating and melting the terminal pins inside the engine fuse box. I took it to the dealership and they inspected it said it was out of warranty but it needed part number 18980-09910-FFF and wiring kit 91300L1000-FF to repair at a cost of 780.00 including parts, tax, and labor. This matches the severe design defect acknowledged in Hyundai TSB #25-EE-002H or alternative TSB-24-EEOO-1H. I filed case number 43138757 with Hyundai corporate. For now this just affects my air conditioning. However, the root failure is a known design defect that presents a severe vehicle fire hazard and potential loss of windshield defrosting capability, lights, etc. if the whole electrical system should fail. As you should know the engine bay fuse box (which currently has melted parts) is the "brain" for the car's electrical distribution. It doesn't just power my AC fan; it holds the fuses and relays for the cars fuel pump, engine control module (ECM), headlights, and electronic power steering. If left unfixed and over time as the plastic melts, copper wires will cross and touch each other, causing a massive short circuit. My engine could suddenly cut out and stall while I am traveling at 70 mph on the highway, instantly killing my power steering and power brakes and putting me in extreme danger. Again not to mention the fire hazard this situation is likely to cause. This should be addressed via a mandatory safety recall, so that I don’t have to pay for a known engineering design defect and in case the TBS bulletin fails or further unknown damage has already occurred.
- Fuel/propulsion system · Seats · Structure › Body
Car was taken to dealership for inspection. Upon inspection, it was determined that the fuel tank had expanded and pushed towards the heat shield, and expanded upward pushing up the back seats of vehicle. It was determined to not safe to drive. Manufacturer contacted me and offered a buyback. Upon…
Car was taken to dealership for inspection. Upon inspection, it was determined that the fuel tank had expanded and pushed towards the heat shield, and expanded upward pushing up the back seats of vehicle. It was determined to not safe to drive. Manufacturer contacted me and offered a buyback. Upon their offer of a buyback, it was determined that I would owe the manufacturer approximately $2,000. I have requested that they fix it, and they have refused to give me the paperwork I requested about the car's condition and fixability. I am in the process of negotiating and am filing this complaint for the record.
- Electrical system
Fan motor fuse box quit working and ac/heat no longer operational. First time was around October 21, 2025.
- Electrical system · Engine · Power train
My vehicle while driving, it is jerking and shaking. When I come to a stop, the cars rpms go up and down while the car is shaking. When I pressed the gas pedal to accelerate the car will not accelerate as normal and the car jerks as I’m driving it. The RPMs rev up and down without any pressure…
My vehicle while driving, it is jerking and shaking. When I come to a stop, the cars rpms go up and down while the car is shaking. When I pressed the gas pedal to accelerate the car will not accelerate as normal and the car jerks as I’m driving it. The RPMs rev up and down without any pressure placed on the gas pedal. The check engine light came on.The miles per hour only allows me to put one digit. I wanted to clarify that the problem is occurring anywhere between 0 mph to 65 mph when these the car jerks and shakes and the RPMs go up and down without me pressure on the gas pedal.
- Engine
The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. The contact added oil to the engine. The dealer was made aware of the failure. The vehicle was taken to the dealer several times, and several oil consumption…
The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. The contact added oil to the engine. The dealer was made aware of the failure. The vehicle was taken to the dealer several times, and several oil consumption tests were performed. The contact was informed that the oil consumption test results did not indicate excessive oil consumption. The failure reoccurred. The vehicle was taken to the dealer, and the contact was informed that the oil level was a half quart low. The contact was informed that no repair options were available. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.
- Seat belts
The seat belt latches do not latch or will spontaneously unlatch. This has been a problem for about 4 years. I have checked for recalls and not seen any for my car. I will check with the dealer but have tried vacuuming the latches without effect. I have never experienced anything like this in any…
The seat belt latches do not latch or will spontaneously unlatch. This has been a problem for about 4 years. I have checked for recalls and not seen any for my car. I will check with the dealer but have tried vacuuming the latches without effect. I have never experienced anything like this in any previous vehicle. The warning buzzer lets me know when the seatbelt unlatches, but I seriously doubt the belt would hold in case of an accident.
- Electrical system
No air coming from cabin, upon further inspection found melted multifuse with melting terminal pin area in fuse box. No prior signs of warning, leaving vehicle without operable air condition for high temperatures.
- Fuel system, gasoline · Structure
The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed with the family inside the vehicle, a strong gasoline odor was inside the cabin of the vehicle. The contact stated that the fuel gauge was lowering quickly. Upon exiting the vehicle, the contact…
The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed with the family inside the vehicle, a strong gasoline odor was inside the cabin of the vehicle. The contact stated that the fuel gauge was lowering quickly. Upon exiting the vehicle, the contact became aware of gasoline gushing heavily out of the vehicle onto the ground. Two months prior to the failure, the vehicle was taken to an authorized dealer due to an abnormal sound coming from the rear of the vehicle. The contact received notification of NHTSA Campaign Number: 25V796000 (Fuel System, Gasoline); however, the recall repair was not performed because the part for the recall repair was not yet available. The vehicle was towed to a dealer where it was determined that the gas valve was not properly fixed. The abnormal sound in the rear of the vehicle was due to the fuel expansion, which caused the tank to rupture and melt. The melting caused the fuel pump to expand and melt, causing structural damage to the body of the vehicle. The structural expansion caused the rear passenger seats to raise up. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 89,000.
- Engine
My 2020 Hyundai Sonata 2.5L is experiencing excessive engine oil consumption. At approximately 88,063 miles, Great Lakes Hyundai documented that the engine oil level was 1.30 quarts below full after an oil-consumption check. The dealer topped off the oil, submitted photos and a…
My 2020 Hyundai Sonata 2.5L is experiencing excessive engine oil consumption. At approximately 88,063 miles, Great Lakes Hyundai documented that the engine oil level was 1.30 quarts below full after an oil-consumption check. The dealer topped off the oil, submitted photos and a prior-authorization/goodwill request to Hyundai, and Hyundai declined assistance. The dealer recommended combustion chamber cleaning with an estimate of $979.76. I am concerned that this excessive oil consumption could lead to sudden engine damage, loss of power, stalling, or engine failure if the oil level drops between checks. The vehicle is only a 2020 model year, and this level of oil consumption appears abnormal. I am also concerned about possible emissions/catalytic converter damage from oil burning.
- Fuel/propulsion system
Hyundai Motors America has failed to comply with its statutory obligations in conducting the recall campaign 25V796, and is instead engaging in behavior substantially similar to that which has been previously censured by NHTSA. My Sonata suffered irreparable damage related to this campaign as…
Hyundai Motors America has failed to comply with its statutory obligations in conducting the recall campaign 25V796, and is instead engaging in behavior substantially similar to that which has been previously censured by NHTSA. My Sonata suffered irreparable damage related to this campaign as confirmed by HMA. 49 U.S.C. § 30120(a)(1)(A) allows HMA to choose one of three remedies: repair, replacement, or refund. However, they 1) say it cannot be safely repaired, 2) will not replace it, and 3) are not offering a repurchase as required by statute, i.e. "by refunding the purchase price, less a reasonable allowance for depreciation." Instead, Hyundai's case manager Aditya informed me on 5/29/2026 at 12:57 PM that they will make a repurchase offer "based on the Kelly Blue Book value." I protested and cited the statute, but he maintained that Hyundai has their process and subsequently gave an unconscionably low offer that was not based on any reasonable measure of depreciation. I insisted on a reasonable, defensible calculation. I proposed 1) using the state formula for calculating reasonable depreciation as applied in both Texas and California (HMA and my home states), or 2) using actual market values (of which I have tangible data) to determine the actual market loss in value. Hyundai has rejected both of these reasonable proposals in favor of an arbitrary formula that would leave me with thousands of dollars in lost value. On June 9, 2026, when I pressed Executive Case Manager Jenifer for an explanation of their proposed depreciation formula, she only stated that "it’s a standard calculation across the board" and that it applies "regardless of state" and they "will not change it." The NHTSA discussed this behavior in its Final Order and Determination against Fiat in Federal Register Vol. 45 No. 7, and endorsed a "reasonable" model similar to my proposal #2 above. It found Fiat non-compliant for its behavior which had a nearly similar impact.
- Engine · Power train
For my vehicle the Check Engine light has been on continuously throughout the last 6 months and mechanics are going to have to replace the thermostat. Multiple auto mechanics have indicated online that this is a very common problem with many Hyundai vehicles from 2020-2023 and can be a danger due…
For my vehicle the Check Engine light has been on continuously throughout the last 6 months and mechanics are going to have to replace the thermostat. Multiple auto mechanics have indicated online that this is a very common problem with many Hyundai vehicles from 2020-2023 and can be a danger due to temperature control not being accurate for vehicles (Code P2181). Many owners of these Hyundai vehicles have experienced this issue leading online and this issue should be made aware to Hyundai and the general public to see if this is something that needs to be made aware for the safety of drivers to determine if their vehicle is at an accurate temperature.
- Fuel system, gasoline
The contact owns a 2020 Hyundai Sonata. The contact received notification of NHTSA Campaign Number: 25V796000 (FUEL SYSTEM, GASOLINE). The contact stated that while driving 60 MPH, the vehicle was leaking fuel from the fuel tank. There was no warning light illuminated. The dealer was contacted and…
The contact owns a 2020 Hyundai Sonata. The contact received notification of NHTSA Campaign Number: 25V796000 (FUEL SYSTEM, GASOLINE). The contact stated that while driving 60 MPH, the vehicle was leaking fuel from the fuel tank. There was no warning light illuminated. The dealer was contacted and notified of the failure, and the vehicle was repaired. The contact stated that the failure was a recurring failure. The manufacturer was notified of the failure. The failure mileage was approximately 108,000.
- Engine
2020 Hyundai Sonata SEL Plus, VIN [XXX] . A/C system fails due to refrigerant leak that empties the system completely within 1-2 weeks of recharge. Leak cannot be located through standard external inspection. First noticed reduced cooling summer 2025. Driver's side loses cooling first, then…
2020 Hyundai Sonata SEL Plus, VIN [XXX] . A/C system fails due to refrigerant leak that empties the system completely within 1-2 weeks of recharge. Leak cannot be located through standard external inspection. First noticed reduced cooling summer 2025. Driver's side loses cooling first, then passenger side fails days later — pattern consistent with evaporator core leak in dual-zone system. In September 2025, independent shop found system completely empty, recharged it, and attempted leak detection but could not locate source. Approximately two weeks later, system was empty again. Shop still unable to find leak. Symptom pattern — rapid total refrigerant loss, asymmetric failure (driver side before passenger), no externally detectable leak — points to evaporator core, which is enclosed in the HVAC housing behind the dashboard and invisible during standard inspection. Vehicle has 50,125 miles, still under the 60,000-mile warranty limit after 6+ years. Low-use vehicle averaging under 8,000 miles/year. 5-year calendar warranty expired approx. Jan 2025; issue first documented Sept 2025, only 8 months later. Defect was almost certainly present before warranty expiration. A class action investigation is underway (XXX) for premature A/C failures in 2018-2022 Sonata, Elantra, Palisade, Santa Fe, and Tucson vehicles. Loss of A/C in Texas climate poses risk of heat illness to occupants, especially children. This component should not fail at under 50,000 miles. Original lessee and purchaser; vehicle well maintained. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Forward collision avoidance › Automatic emergency braking
The contact owns a 2020 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle experienced phantom braking and nearly came to a complete stop. The contact stated that the automatic emergency braking system unexpectedly engaged while there were no roadway obstacles or…
The contact owns a 2020 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle experienced phantom braking and nearly came to a complete stop. The contact stated that the automatic emergency braking system unexpectedly engaged while there were no roadway obstacles or vehicles near the vehicle. The vehicle was taken to the dealer, who informed the contact that they would need to verify whether the repair would be covered under the active warranty. The vehicle was not yet diagnosed or repaired. The manufacturer was not yet contacted. The failure mileage was approximately 2,000.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles…
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at NHTSA.gov under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to NHTSA which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing. There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in NHTSA's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, NHTSA does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA’s reasons for denial of the petition will be published. The reference numbers for the complaints to NHTSA cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11011830The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on.
- 11010975Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the Electronic Control Unit (ECU). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
- 11010974Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and fuel tank, and update the ECU. If necessary, replace the check valve and/or fuel tank based on inspection results.
- 11006112Certain 20-22MY Sonata (DN8a), 21-23MY Santa Fe (TMa), and 22-23MY Tucson (NX4a) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). Follow the service procedure outlined in this bulletin to replace the ITM.
- 11006111Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads Uneven Road Ahead, Drive carefully on the cluster along with a warning sound. Follow the procedure outlined in this bulletin to update the AVN software to resolve this condition.
- 10253275This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
- 10251294This bulletin provides the procedure to update the Engine Control Module (ECM) and/or the Transmission Control Module (TCM) for 2020-2023MY Sonata (DN8/DN8a) vehicles to improve operation of the Idle Stop and Go (ISG) system. Under certain circumstances the vehicle may not restart after the ISG system has engaged and requires a manual restart due to the lack of intake manifold pressure recovery.
- 10251285This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and rail spring becoming partially separated on the inner side of the wiper blade, which could lead to poor wiping performance and/or possible scratching of the windshield glass. Follow the procedure in this bulletin to properly remove the windshield wiper blade protective cover on all new wiper blades.
- 10249699Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads Uneven Road Ahead, Drive carefully on the cluster along with a warning sound. Follow the procedure outlined in this bulletin to update the AVN software to resolve this condition.
- 10247189This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- 10245580This TSB provides information to diagnose the push button shifter operation.
- 10243329If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. DIAGNOSTIC TROUBLE CODES: P070500 - Transmission range sensor circuit malfunction P070512 - Transmission range sensor circuit malfunction P070514 - Transmission range sensor circuit malfunction P07051C - Transmission range sensor circuit malfunction P070600 - Transmission range sensor circuit range/performance P070661 - Transmission range sensor circuit range/performance P070696 - Transmission range sensor circuit range/performance SYMPTOMS: Malfunction Indicator Light (MIL) illuminated 5th gear fail-safe Intermittently wont shift into D or R Intermittently wont shift out of Park Intermittent ly no engine cr ank/n o start in P or N with or without MIL or DTC.
- 10241885If you are servicing an 8-speed vehicle with a Check Engine light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
- 10241875This bulletin provides warranty procedure for EGR Valve replacement related to DTC P0401 EGR Flow Insufficient on 2020 and 2021MY Sonata (DN8a) equipped with 2.5 GDI Vehicles.
- 10241796This TSB provides information to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms listed below or DTCs (listed on Page 2) , follow the Service Procedure on Page 3. SYMPTOMS: Shifter System Malfunction displayed in the cluster Wont shift into or out of gear or wont shift out of Park Incorrect gear display in cluster and/or wont start
- 10240087This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundais Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. As a countermeasure, an update with a frame skip logic has been added to resolve the data congestion with Google Maps.
- 10240084If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition.
- 10235566Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under the PPF. These spots are the result of moisture trapped between the PPF and the paint.
- 10235344This bulletin provides the procedure to repair poor pin tension at joint connector JE102 in certain Sonata (1.6 T-GDI engine) with one or more DTC.
- 10235343This bulletin provides the procedure to repair poor pin tension at joint connector JE202 in certain Sonata (2.5L GDI engine) with one or more DTC.
- 10235340If you are servicing an 8-speed vehicle with a Check Engine light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
- 10230904This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
- 10217258Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased before retail sale. This limit is the lesser of 1.5% of GVWR or 100 pounds. If the total added weight exceeds the lesser of the limit, a label must be added to the driver-side B-pillar within 25mm (1 inch) of the original tire placard.
- 10217251Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
- 10215599Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.
- 10213720If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the related input/output speed sensor and harness.
- 10211677Certain 2020-2022MY Sonata (DN8A) vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.
- 10211671If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and valve body harness.
- 10208865Certain 2020-22MY Sonata (DN8a) and 2021-22MY Santa Fe (TMa) vehicles equipped with 2.5L engine may exhibit a MIL with DTC(s): P2074: Mass Airflow Sensor Plausibility P2074F0: Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Lower Load P2074F1: Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Medium or High Load Secondary DTC(s) below may also be stored: C136081: ESP Irreversible Error C161308: CAN Signal Error EMS C161386: CAN Signal Error EMS C169381: Blind-Spot Collision Warning CAN signal failure - ESC C174181: ESC Not Available VSM (Check ESC) C183586: CAN Message Failure ESC/IEB Vehicles diagnosed with DTC(s) may also experience reduced engine performance and limited power reduction mode. The ECM software revises the logic to accurately detect the amount of air the engine is receiving.
- 10207809This TSB provides a procedure to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms or DTC listed below, follow the Service Procedure, Page 2.
- 10206359Certain 2020-22MY Sonata (DN8a), 2021-22MY Santa Fe (TMa), and 2022MY Tucson (NX4/NX4a) vehicles equipped with 2.5L engine may exhibit a MIL with DTC(s): P2074: Mass Airflow Sensor Plausibility P2074F0: Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Lower Load P2074F1: Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Medium or High Load Secondary DTC(s) below may also be stored: C136081: ESP Irreversible Error C161308: CAN Signal Error EMS C161386: CAN Signal Error EMS C169381: Blind-Spot Collision Warning CAN signal failure - ESC C174181: ESC Not Available VSM (Check ESC) C183586: CAN Message Failure ESC/IEB Vehicles diagnosed with DTC(s) may also experience reduced engine performance and limited power reduction mode. The ECM software revises the logic to accurately detect the amount of air the engine is receiving.
- 10204250Certain 2020-2021 Sonata (DN8a) vehicles with 1.6T engines may exhibit a check engine light in conjunction with a popping noise, abnormal smell from the engine compartment, rough running, or reduced power due to a misfire.
- 10203272Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing
- 10202187Certain 2020-2021 Sonata (DN8a) vehicles with 1.6T engines may exhibit a check engine light in conjunction with a popping noise, abnormal smell from the engine compartment, rough running, or reduced power due to a misfire.
- 10200075This TSB provides a procedure to diagnose the push button shifter operation.
- 10199101If you are servicing an 8-speed front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. DIAGNOSTIC TROUBLE CODES: P070500 - Transmission range sensor circuit malfunction P070512 - Transmission range sensor circuit malfunction P070514 - Transmission range sensor circuit malfunction P07051C - Transmission range sensor circuit malfunction P070600 - Transmission range sensor circuit range/performance P070661 - Transmission range sensor circuit range/performance P070696 - Transmission range sensor circuit range/performance SYMPTOMS: Malfunction Indicator Light (MIL) illuminated 5th gear fail-safe No gear indication in cluster Intermittently wont shift into D or R Intermittently wont shift out of Park Intermittent ly no engine cr ank/no start in P or N with or without MIL or DTC.
- 10199099This bulletin provides information related to an Electronic Control Module (ECM) software update which revises the OBD Air Fuel Ratio Imbalance (AFRI) monitor function frequency and cylinder imbalance diagnosis logic.
- 10190044This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to determine next required steps.
- 10190038This bulletin provides best practice recommendations when performing brake service procedures.
- 10189991When using Wireless CarPlay, the system may intermittently auto disconnect. When Wireless CarPlay is disconnected, a pop up message Phone Not Responding. Please reconnect it and try again will appear on the radio screen.
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