2006 Mercedes Benz R500

Recalls

2 recalls name the 2006 Mercedes Benz R500. Newest first.

• Service brakes, hydraulic › Power assist › Vacuum

  Apr 26, 2024NHTSA 24V29800015,604 vehicles

  Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML, GL, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.

  Risk and remedy

  Risk

  Reduced brake performance or brake failure can increase the risk of a crash.

  Remedy

  Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed on May 24, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MMUSA's number for this recall is 2024050001/2. This recall is an expansion of previous recall number 22V-315.

  Full recall details →

• Service brakes, hydraulic › Power assist › Vacuum

  May 9, 2022NHTSA 22V315000350,294 vehicles

  Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.

  Risk and remedy

  Risk

  Reduced brake performance or brake failure can increase the risk of a crash.

  Remedy

  Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2022050014, 2022050015 2022090006, & 2022090007.

  Full recall details →

Owner complaints

What owners report most

1. Power train6
2. Electrical system5
3. Steering5
4. Seats4
5. Suspension4
6. Service brakes, hydraulic2
7. Unknown or other2
8. Air bags2
9. Wheels1
10. Electronic stability control (esc)1

Latest complaints

• Oct 10, 2023MI140,000 mi
  Power train · Steering
  The contact owns a 2006 Mercedes-Benz R500. The contact stated that while driving at an undisclosed speed, she became aware that the power steering was not functioning, after which the vehicle lost all power. The contact was able to coast to the shoulder of the roadway, where the vehicle failed to…

  The contact owns a 2006 Mercedes-Benz R500. The contact stated that while driving at an undisclosed speed, she became aware that the power steering was not functioning, after which the vehicle lost all power. The contact was able to coast to the shoulder of the roadway, where the vehicle failed to restart. After a visual inspection of the engine compartment, the contact observed an unknown fluid covering various components. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the power steering pump. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 140,000.

• Feb 2, 2023TX
  Suspension

  My 2006 R-500 is leaning from the (front and back) passenger side, causing the vehicle to be unsecure to drive... It feels like both side tires are TOTALLY FLAT. I'm not a mechanic, but it looks like the AIR SUSPENSION IS MALFUNTION

• Jan 24, 2023CA117,000 mi
  Service brakes, hydraulic
  The contact owns a 2006 Mercedes-Benz R500. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The dealer was made aware of the…

  The contact owns a 2006 Mercedes-Benz R500. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The dealer was made aware of the failure and informed the contact that a technician would arrive to his residence to inspect the brake booster and, if necessary, replace the brake booster. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 117,000.

• Nov 12, 2021FL
  Power train · Steering · Unknown or other

  I was purchasing a 2006 Mercedes Benz R500 Black on November 3,2021, VIN: [XXX]. in the process of driving the vehicle less than ten miles, part of the part of transmission case broke off. The steering was hard to turn and this is a Salvage vehicle. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

• Sep 2, 2020TX179,000 miFire2 injuries
  Electrical system · Exterior lighting · Seats
  The vehicle's rear drivers side brake or reverse light would not go off for a week (to my knowledge) and while sitting in the passenger side I turned on the heat warming device and there was no problem. It was after we had been shopping and returned to the vehicle did we notice a smell of something…

  The vehicle's rear drivers side brake or reverse light would not go off for a week (to my knowledge) and while sitting in the passenger side I turned on the heat warming device and there was no problem. It was after we had been shopping and returned to the vehicle did we notice a smell of something burning, but could not tell where it was coming from. Still unaware that a fire could start from the back of the vehicle, IS when we realized that the cargo area of the vehicles side panel was in complete flames! Thus, causing physical and mental injuries, smoke and property damage and a complete sense of insecurity. The vehicles main security feature never warned us of any potential life threatening danger as it would if my tire was low and the on call system failed to be helpful when trying to get help, for we were only able to hear the representatives but not communicate with them which led to 5 representative disconnect calls.

• Jun 2, 2020CA114,000 mi
  Electrical system
  Vehicle has been undriveable on and off for 6 months with defective starter wiring harness which the wires are exposed, and starting intermittently. Towed from the street 2 months ago and sitting at the mechanic trying to help me. Mercedes benz has a safety recall #2006040002 for the exact…

  Vehicle has been undriveable on and off for 6 months with defective starter wiring harness which the wires are exposed, and starting intermittently. Towed from the street 2 months ago and sitting at the mechanic trying to help me. Mercedes benz has a safety recall #2006040002 for the exact problem. They tell me it IS for the 2006 R350 and not the R500 maybe because they were very limited. Theses models are the same built chassis everywhere, including the starter wiring harness, except I have the upgraded V8. And they refuse to fix. Since this has caused me break down issues and IS a potential safety hazard as described. I have paid $1200 a year ago to replace a defective wire harness inside the chassis, as the car smoked and almost caught fire as I had to pull off the road and tow. Am I stuck again?? [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(B)(6). *tr

• May 29, 2020CA114,000 mi
  Electrical system

  As per recall#2006040002 IS the exact problem I am having now. The starter wiring harness IS defective and exposed, and car IS disabled at mercedes mechanic site. mbusa says it IS only to certain r500s and vin specific. I am confused since this IS limited production.

• Jan 9, 2019FL144,894 mi
  Electrical system

  After diagnostics found that the front sam had been under water shorting the sam and almost causing vehicle to catch fire. would need the front sam and wiring repair along with connector replacement to move forward with diagnostic. the water IS coming from the firewall on the passenger side. Was at work had to leave it at my job because it wouldn't start so the next day I had to have it towed.

• Dec 15, 2017TX112,000 mi
  Power train
  The transmission has a faulty shift solenoid that can only be replaced by a mercedes benz dealer and therefore IS many times more expensive than other repairs. Also this solenoid has a well above average failure rate. my car has 112,000 miles and the transmission began shifting poorly and got…

  The transmission has a faulty shift solenoid that can only be replaced by a mercedes benz dealer and therefore IS many times more expensive than other repairs. Also this solenoid has a well above average failure rate. my car has 112,000 miles and the transmission began shifting poorly and got stuck in 4TH gear. Can became very jerky and once went into park without me selecting park, this happened at a stop light with cars coming up behind me.

• Dec 1, 2016NC106,000 mi
  Air bags
  Consistent issues with drivers side airbag. sms light comes on after being repaired sporadically. Multiple repairs documented via bosche and ase mercedes benz repair facility. spoke with hendrick mercedes benz and they advised that a voluntary recall for the airbag was issued but IS no longer…

  Consistent issues with drivers side airbag. sms light comes on after being repaired sporadically. Multiple repairs documented via bosche and ase mercedes benz repair facility. spoke with hendrick mercedes benz and they advised that a voluntary recall for the airbag was issued but IS no longer honored. I was never informed of the voluntary recall and the factory mercedes benz dealer IS no longer honoring the voluntary recall. I will need to garner the previous repair invoices from the certified mercedes benz repair shop.

• Aug 25, 2016VA
  Unknown or other · Wheels

  The wheel lug bolts are all rusted

• Mar 25, 2015CA80,000 miCrash1 injury
  Air bags
  TL* the contact owned a 2006 mercedes benz R500. While driving at 7 mph, the vehicle slid on the snowy road and crashed into a pole. The front and rear driver side air bags failed to deploy. The front passenger sustained injuries to the left forearm, right shoulder, and right side of the neck that…

  TL* the contact owned a 2006 mercedes benz R500. While driving at 7 mph, the vehicle slid on the snowy road and crashed into a pole. The front and rear driver side air bags failed to deploy. The front passenger sustained injuries to the left forearm, right shoulder, and right side of the neck that did not require medical attention. A police report was not filed. The vehicle was destroyed. The manufacturer was notified of the failure. The approximate failure mileage was 80,000.

• Sep 24, 2014NJ93,000 mi
  Power train

  Transmission failed on on ramp route 295 nj exit 21 south. car's transmission failed to shift gears after entering traffic lanes. narrowly missed being hit by large truck. vehicle made it to next off ramp and was nursed home in 1ST gear. *tr

• Nov 4, 2013NV106,000 mi
  Suspension
  TL* the contact owns a 2006 mercedes-benz R500. The contact stated the wheel well was sitting on the tire upon starting the vehicle. The contact took the vehicle to a local mechanic who stated it was either a air matic compressor or the air matic struts that were defective. The contact did not…

  TL* the contact owns a 2006 mercedes-benz R500. The contact stated the wheel well was sitting on the tire upon starting the vehicle. The contact took the vehicle to a local mechanic who stated it was either a air matic compressor or the air matic struts that were defective. The contact did not take the vehicle to a dealer to determine the cause of failure. The contact called the manufacturer and filed a complaint. The failure mileage was 106,000.

• Sep 30, 2013AL63,000 mi
  Electronic stability control (esc) · Service brakes · Steering
  Have computer issues that are reporting and shutting down braking systems, speed controls, eps, ABS. independent mechanic (mercedes specialist) reports this IS a well known problem on model years 2005 and up, he has multiple vehicles in for repairs to electronic systems. I just spent 1,384.00…

  Have computer issues that are reporting and shutting down braking systems, speed controls, eps, ABS. independent mechanic (mercedes specialist) reports this IS a well known problem on model years 2005 and up, he has multiple vehicles in for repairs to electronic systems. I just spent 1,384.00 plus a week later, more codes meaning another 600+ to repair. he says these electronics systems are a constant source of his income. the rclass IS causing me breakdowns, if I turn off engine when it IS hot, I will be stalled and unable to crank it until it cools off. talk about being unsafe, if I have a flat on interstate, and turn off engine, I will be stuck until engine cools. steering wheel sensors are still bad and he IS locked out of that part of the computer, until he can find the open circuit or replace sensors. another 4 or 5 hours of time that he thinks it will take to find the problem. note: when the steering wheel sensors report problems, it shuts down your automatic braking systems and cruise control systems. rant over. wish I had never bought it. *tr

• May 1, 2013NJ90,000 miFire
  Seats
  TL* the contact owns a 2006 mercedes benz R500. The contact stated that the driver's side heated seat failed and overheated, burning a hole through the seat fabric. The vehicle was taken to an independent mechanic, who diagnosed that there was a defect within the heating unit and that the seat…

  TL* the contact owns a 2006 mercedes benz R500. The contact stated that the driver's side heated seat failed and overheated, burning a hole through the seat fabric. The vehicle was taken to an independent mechanic, who diagnosed that there was a defect within the heating unit and that the seat needed to be replaced. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was not repaired. The vin was not available. The failure mileage was 90,000 and the current mileage was 98,000. *Tr

• Mar 4, 2013NJ96,500 miFire
  Seats
  The heated seats caught on fire, burned passenger while driving. Seats in flames, started to smoke burning passenger clothing. Passenger turned off heated seats and stopped the vehicle for potential danger to others, this IS a very dangerous problem mercedes IS engineering cars than burn while…

  The heated seats caught on fire, burned passenger while driving. Seats in flames, started to smoke burning passenger clothing. Passenger turned off heated seats and stopped the vehicle for potential danger to others, this IS a very dangerous problem mercedes IS engineering cars than burn while driving, that have similar problem its sister car mercedes m series, which are comprised of same components, different body style, but overall components electrical, mechanical and interior are basically same, but m series IS being recalled but not the less purchased r series, which has the same problems with power steering, electrical and so on, why mercedes recalling the m series when r series sister car 99% its copy?. This IS a consumer??s worst nightmare! One car IS being ignored while other IS acknowledged due to its higher sales. Both vehicles m series/r series should evaluated as same unit and not separately, they are engineered from same blueprint, use 90% of same components. Told by service technician, that mercedes fixes power steering units for free on m series, while purchasing1 quart of power steering fluid for broken unit, seals blown prior to 49,000 miles with a clean car fax? The dealer, I purchased it from told me to bring it back to add more power steering fluid which lasted 8 months before, I realized the seals were broken and I purchased a lemon! The mercedes r series with clean car fax did indeed come with mechanical and electrical problems, since there are so few r series out there, I am doubtful that any kind of evaluation, analytical means would suffice a recall other, than using same m series recall for r series, that would be the only fair solution for the consumer. Mercedes should acknowledge it's part in poor engineering of these two vehicles as a whole, both vehicles many problems could have been avoidable. *tr

• Mar 4, 2013NJ48,000 mi
  Steering
  TL* the contact owns a 2006 mercedes benz R500. The contact stated that when making turns, she heard a loud grinding noise. The vehicle was taken to the dealer. After inspection, they advised her that the power steering fluid was low. The vehicle was repaired by adding power steering fluid.…

  TL* the contact owns a 2006 mercedes benz R500. The contact stated that when making turns, she heard a loud grinding noise. The vehicle was taken to the dealer. After inspection, they advised her that the power steering fluid was low. The vehicle was repaired by adding power steering fluid. Immediately after leaving, the failure recurred. The contact later took her vehicle to another mechanic and they advised her that the power steering rack and pinion failed and needed to be replaced. The vehicle was repaired. The failure mileage was approximately 48,000. The current mileage was approximately 96,500. *Tr returned by usps on 4/10/2013. 2ND attempt on 4/10/2013 failed. *kb

• Aug 28, 2012FL50,000 mi
  Suspension
  Airmatic suspension has failed countless times...fixed under warranty then failed again...suspension fails when the car IS off, then slowly raises itself when the vehicle IS unlocked and started...dealer said there was nothing else they old do since they have replaced parts already and recommended…

  Airmatic suspension has failed countless times...fixed under warranty then failed again...suspension fails when the car IS off, then slowly raises itself when the vehicle IS unlocked and started...dealer said there was nothing else they old do since they have replaced parts already and recommended I just continue to deal with the lowering suspension issue until it just does not raise up anymore. not the answer I expected from a mercedes benz dealer. *tr

• Jan 5, 2011GA50,453 mi
  Power train
  At times the shift lever would not work. I called the dealership and followed the instructions in the mercedes-benz campaign #2006090001 which has a nhtsa #10021242. After following the instructions in the campaign my vehicle will start in park and go into reverse or drive by itself. The indicater…

  At times the shift lever would not work. I called the dealership and followed the instructions in the mercedes-benz campaign #2006090001 which has a nhtsa #10021242. After following the instructions in the campaign my vehicle will start in park and go into reverse or drive by itself. The indicater says it IS in park when it starts but shifts to drive or reverse by itself even without my foot on the brake. It IS very dangerous because the car just takes off.

• Oct 31, 2010NY43,358 miFire
  Electrical system · Seats

  2006 mercedes benz R500 drivers seat fire when heated seat was turned on. Flames and fire melted seat and damaged drivers dress. *Tr

• Sep 30, 2010CA49,000 mi
  Power train › Automatic transmission
  Tl*the contact owns a 2006 mercedes benz R500. The contact stated that while driving 25 mph, the vehicle would jerk and would not accelerate when the accelerator pedal was depressed. The vehicle was taken to an authorized dealer where the contact was informed that the transmission needed to be…

  Tl*the contact owns a 2006 mercedes benz R500. The contact stated that while driving 25 mph, the vehicle would jerk and would not accelerate when the accelerator pedal was depressed. The vehicle was taken to an authorized dealer where the contact was informed that the transmission needed to be rebuilt. The vehicle had not been repaired. The failure mileage was approximately 49,000 and the current mileage was approximately 54,000.

• Aug 30, 2010NY
  Steering

  2006 mercedes benz R500. entire steering column moves with all controls when shifting gears and/or using the turn signal. intermittent problem. may be attributed to heat exposure (i.e car parked on the street being exposed to the sun). reported to the dealer numerous times. *tr

• Jul 10, 2010FL40,000 mi
  Suspension
  Air matic suspension malfunction error message with no codes. car has been in and out of dealership for past year for this issue. during highway driving car issued warning that car height was too low for driving, manual read to proceed with caution. once parked and off, the car completely…

  Air matic suspension malfunction error message with no codes. car has been in and out of dealership for past year for this issue. during highway driving car issued warning that car height was too low for driving, manual read to proceed with caution. once parked and off, the car completely dropped to the ground causing the tires to rub against the wheel well. another occurrence, when placing more weight in addition to the driver causes the malfunction error message causing a rough ride and the suspension to raise unevenly. car has been to the mb dealership over 4 times and they cannot figure out what IS causing this problem with the airmatic suspension as the computer does not leave any codes for them to follow. car IS being driven and tested by the dealership overnight (this IS the second time they've monitored overnight) and over the weekend to further monitor the problem with a computer connected to the car to detect the malfunction. the malfunction started occurring every three months and has progressed to every other week during the past year. the car does not drive as car with air matic suspension should but rather a car with no suspension at all. service manager suspects it to be an issue with the computer system (last resort repair as per mercedes benz) which IS causing the malfunction. service manager explains that all other options must be exhausted prior to communicating with mb for the last resort alternative. *tr

• Jun 10, 2010IL35,000 miCrash
  Vehicle speed control
  Tl*the contact owns a 2006 mercedes R500. The contact stated that the driver was trying to park the vehicle while driving 5 mph and the vehicle suddenly accelerated. The vehicle continued to accelerate until it crashed into a tree. The contact didn't mention any injuries. None of the air bags…

  Tl*the contact owns a 2006 mercedes R500. The contact stated that the driver was trying to park the vehicle while driving 5 mph and the vehicle suddenly accelerated. The vehicle continued to accelerate until it crashed into a tree. The contact didn't mention any injuries. None of the air bags deployed upon impact. The driver was not aware of how much the speed increased prior to the collision. The vehicle was towed to the dealer who stated that the failure was caused by user error and not the vehicle. The dealer also refused to inspect the vehicle. The vehicle was being repaired by the insurance company when the complaint was filed. The failure mileage and current mileages were 35,000. updaetd 10/27/10. *Lj

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.

• 11009122Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.
• 11008323Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate into the headlamp. This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check housing cover of lamp unit for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove headlamps. 2. Remove all grommets from outlet openings. 3. Seal vent openings with sealing profile. Important: All openings must be sealed carefully for the pressure compensation diaphragm to work properly! 4. Remove existing service cover. 5. Place desiccant packs into the new service covers and bolt down (Picture_01). 6. Glue the new diaphragm onto the intended surface at the service cover (Picture_02). Note: The bonding surface must be clean and dry. 7. Attach service cover with desiccant pack at headlamp. 8. Install headlamp. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_03). 2. The new transparent diaphragm must be correctly bonded (Picture_04). 3. Check headlamp housing for any external damage.
• 11008091Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.
• 11007974Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system
• 11007790Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check headlamps for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove existing service cover with diaphragm (Picture_01 (1)). 2. Insert desiccant packs (Picture_01 (2)) into new service covers with diaphragm and seal with protective grille and bolt down (Picture_01 (3)). Note: One desiccant pack is required for each small service cover, and two desiccant packs are required for each large service cover. 3. Stick the supplied diaphragm onto the new service cover and attach at the headlamp. Note: The bonding surface must be clean and dry. 4. If the headlamp housing has an additional 2nd diaphragm, this must be covered over with masking tape. Note: The bonding surface must be clean and dry. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_02). 2. The new transparent diaphragm must be correctly bonded (Picture_03). 3. Check headlamp housing for any external damage.
• 11007753Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304
• 11005294Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress).
• 10248162Crease formation on genuine leather seat covers in vehicles with low mileage Objects left on the seats for extended periods of time (pressure marks). Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). Light initial creases due to vehicle handling. Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!
• 10167554Engine diagnosis warning lamp activated. Fault code P045600 "Very fine leak" or P044200 "Fine leak" stored in engine control unit.
• 10166978Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700
• 10166976Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"
• 10166975This Customer 1 Action has been initiated because certain mbrace subscribers were recently contacted by mbrace informing them that they need to have an i-button call performed to ensure their mbrace device has registered with the Verizon Telematics systems. If the i-button call failed or if the customer was unable to perform the i-button call, the mbrace agent instructed the customer to make an appointment with their dealer to have the issue corrected and/or i-button call performed. The vehicles impacted range from model year 2002 to 2014.
• 10166099Pneumatic comfort systems with insufficient performance, entirely inoperative or leaky.
• 10166080The pneumatic 4-way lumbar support fails. Lumbar support pockets cannot be filled up or they drain.
• 10158329Oil in engine wiring harness
• 10135653Procedure in case of slight oil traces on TRANSMISSION 722.9
• 10135649Procedure in case of slight oil traces on TRANSMISSION 722.9
• 10135632Fault in particulate sensor
• 10135628iPhone mobile phone: Various complaints after software update to iOS8
• 10052151Xentry (mercedes): rattling noise coming from the area of the steering column tube system, when driving over rough road and when accelerating or braking, there would be cracking noises. Models 164, 251. No model years listed.
• 10037653Mercedes-benz: there are electrical production quality issues that cause the air bag warning light to illuminate.
• 10037408Mercedes-benz: shock absorber procedure.
• 10033074Xentry: outside door handle no longer returns to end position. Due to a bent pin in the dynamic balancer, the support spring of the bearing bracket can slide out of place or become unhooked. Models 164, 251, 166, 204, 212. No model years listed. Updated 2/1/12. Updated 10/3/12. Updated 10/21/13.
• 10033071Mercedes benz: adjusting wiper arms. If you receive reports on certain vehicles of wipers chattering/noisy, proceed as follows: inspect wiper blades/inserts for wear and replace; thoroughly clean windshield; verify use of correct washer fluid; check washer nozzle adjustment; check wiper arm angle adjustment; and record values per applicable model; if required, adjust wiper arm angle. Models 164/251. No model years listed.
• 10033070Xentry (mercedes): engine warning lamp IS currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit. Models 171, 203, 209, 211, 219, 221, 216, 230, 164, 251, and 403. No model years listed.
• 10032727Mercedes: following fault codes are entered in the control unit and displayed-fc5320 drain valve:open circuit or insufficient valve current in models series 211, 219; fc5260 drain valve open circuit or insufficient valve current in model 221; fc5250 drain open circuit or insufficient valve current in model series 251, 164. Defective connecting cables to drain valve at airmatic compressor. This results in the setting of the fault codes. No model years listed.
• 10032707Mercedes: ensuring unobstructed movement for the fuel level sensor. When installing the left or right fuel level sensor, it IS essential for it to have unrestricted, unobstructed movement.
• 10032568Mercedes benz service campaign: see document search button for owner letter. Software calibration number (scn) coding; engine control module. The vehicles fuel tank leak diagnosis system may have been inadvertently deactivated during a visit to the workshop. This may cause the affected vehicles to fail to meet the statutory requirements for inspection and or maintenance (emissions inspection).
• 10030929Mercedes: corrosion protection coatings for brake components and hardware may be damaged and or stripped away if highly concentrated acid based cleaners are used. Once the corrosion protection IS damaged or removed the brake components and or hardware can begin to corrode. Include all models and model years.
• 10028686Mercedes: air matic visit workshop displayed within instrument cluster. Models 164, 211, 219, 221 and 251. Included 4matic, AMG (compressor) AMG, bluetec and wagon. Model years unknown. Updated 9/18/09.
• 10028668Mercedes: active head restraints activate for no reason. This may be caused by damage to the seat wiring harness causing a short circuit. Models 164 and 251. Model years unknown. Updated 9/18/09.
• 10028646Mercedes: groaning or dull, heavy cracking noises from steering shaft area. When turning steering wheel or moving off or braking. This may be emanating from the bearing and housing of upper steering shaft (firewall pivot point) or steering coupling (lower steering shaft). Models 164 and 251. Model years unknown.
• 10028645Mercedes: chrome plating peeling on decorative caps on the steering wheel spokes, this IS due to less than optimal adhesion between chrome plating and base material. Models 164 and 251. Model years unknown.
• 10028026Mercedes: replace v belt upper guide pulley. The v belt upper guide pulley optimized for noise reduction IS available. The dealer will replace upper guide pulley at the next workshop visit.
• 10028025Mercedes: stop/tail light not illuminating with dtcs 9102, 9103, 9106, 9107, 9126, 9127 or 9136. (Vehicles without led tail lamps) updated 5/13/09. Updated 4/20/11. Repair does not apply to led tail lamps.
• 10028024Mercedes: check air suspension compressor and replace if necessary. Insufficient air pressure in the air suspension system may result from damage to the pressure disk in the air suspension compressor.
• 10025648Rattling/thumping noise on rough roads and/or knocking noise when moving steering in both directions on all model 164 and 251 vehicles. Model years unknown.
• 10024116Rear window wiper fails to function or stops intermittently. Models ml500, ml350, R350, R500.
• 10023784Models E320, E500, E55, E350, E550, E63, ml350, ml500, ML63, ml320, ml550, gl450, gl320, gl550 with diesel engine om 642 my 2006-2007 -- update engine control module software.
• 10023491Mercedes-benz - procedure for replacing fuel pump and fuel filter modules . Models ML63, ml320, ml350, ml500, ml550, gl320, gl450, gl550, R63, R320, R350, R500. Model year all.

Every Mercedes Benz R500 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.