2003 Mercedes Benz S500

Owner complaints

What owners report most

1. Seat belts4
2. Electrical system2
3. Equipment1
4. Exterior lighting1
5. Power train1
6. Service brakes, hydraulic1
7. Suspension1
8. Engine and engine cooling1

Latest complaints

• May 26, 2020CA
  Seat belts
  During hot weather the seat belt gets stuck and you will not be able to use the seat belt at all. This IS a safety issue and should not happen. This happens when the car IS parked under hot weather. This IS in the drivers side. This has been happening for the last 1 year.*dt consumer stated seat…

  During hot weather the seat belt gets stuck and you will not be able to use the seat belt at all. This IS a safety issue and should not happen. This happens when the car IS parked under hot weather. This IS in the drivers side. This has been happening for the last 1 year.*dt consumer stated seat belt gets jammed when temperature goes over 90 degrees and IS unable to use seat belts as well as park the car outside for long periods of time. consumer has replaced the seat belts but malfunctioning.*jb

• Nov 26, 2018CA63,250 mi
  Exterior lighting · Seat belts

  The passenger front seat belt will not retract. Also, the dashboard lights went out while driving making it very hard to see speed/fuel/gear selection. These are both safety concerns that should be recalled. We can send you a picture of the dead dash if needed. Also video of a stuck seat belt. Thanks, kurt.

• Dec 11, 2015SC147,000 mi
  Suspension

  TL* the contact owns a 2003 mercedes benz S500. While attempting to making a right or left turn, an abnormal noise was heard on the front passenger side of the vehicle. The failure was persistent. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 147,000.

• Sep 30, 2015NJ162,000 mi
  Electrical system
  TL* the contact owns a 2003 mercedes benz S500. The contact stated that while driving at 45 mph, the speedometer lights flashed and there was an abnormal burning odor coming from the front panel. The vehicle was not diagnosed or repaired. The contact stated he was mechanic and the instrument…

  TL* the contact owns a 2003 mercedes benz S500. The contact stated that while driving at 45 mph, the speedometer lights flashed and there was an abnormal burning odor coming from the front panel. The vehicle was not diagnosed or repaired. The contact stated he was mechanic and the instrument cluster failed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 162,000.

• Sep 20, 2014CA100,000 mi
  Seat belts

  The seat belts will periodically not extend. *tr

• Aug 11, 2014CA28,000 mi
  Seat belts › Front › Retractor

  TL* the contact owns a 2003 mercedes benz S500. The contact stated that the front passenger side seat belt failed to retract. During warmer outside temperatures, the failure would worsen. The failure occurred multiple times. The dealer was unable to duplicate the failure. The vehicle was not repaired and the manufacturer was notified. The approximate failure mileage was 28,000.

• Oct 11, 2013VA55,000 mi
  Electrical system
  Special acquisition module (sam) my car would not start the mercedes roadside came out and started the car and I took it to the dealership for diagnostic. Upon review the dealer stated the sam module plastic cover had water drops on it. They also stated the male and female connectors to the module…

  Special acquisition module (sam) my car would not start the mercedes roadside came out and started the car and I took it to the dealership for diagnostic. Upon review the dealer stated the sam module plastic cover had water drops on it. They also stated the male and female connectors to the module was corroded, and I would need a new special acquisition module (sam) at the cost of $1590.00. They ask if I had left the windows down, but I had not the inside of the car has never been wet, but I did notice everytime I went to the car wash the information system was showing alerts I didn't recognize. My concern IS even with a new module if the old one got wet and it IS clear the water IS coming from underneath the car what will keep the new module (sam) from getting wet. Something IS allowing the (sam) module to get wet from under the car. *tr

• Oct 19, 2004CA12,905 mi
  Service brakes, hydraulic › Antilock/traction control/electronic limited slip
  While approaching a stop light, the consumer applied the brakes and they failed, which caused the vehicle to slowly continue into the center of the intersection. the owner later took the vehicle to the dealer and was told that this occurred with all brands of cars not just mercedes and that a…

  While approaching a stop light, the consumer applied the brakes and they failed, which caused the vehicle to slowly continue into the center of the intersection. the owner later took the vehicle to the dealer and was told that this occurred with all brands of cars not just mercedes and that a certain percentage of brake failures IS acceptable in the auto industry so long as that percentage does not get too high. *Jb consumer stated that the info was hard to accept when he could have been killed by cross traffic at the intersection where he coasted through a redlight. *tc

• Jul 22, 2004FL
  Equipment › Appliance › Air conditioner

  The consumer took the vehicle to the manufacturer for final repairs, however the problem still existed on with air conditioner. *la nar *cb *jb

• Feb 13, 2003CA250 mi
  Engine and engine cooling › Engine · Power train

  The gears became stuck, and the engine did not shut off, consumer had to disconnect the battery to shut off the engine.*jb

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.
• 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
• 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!
• 10205293Tire Pressure Sensors.
• 10205233Mobile phone cotacts are not transferred completely.
• 10202531Touch pad: Search lighting does not dim or does not turn on.
• 10186141NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
• 10181124Harsh engagement when changing gear range from P to D or R
• 10181123Harsh engagement when changing gear range from P to D
• 101766615 to 4 coasting downshift - shift quality concern with cold trans- mission oil on MODEL 217 or 222 in combination with ENGI- NE 278 and TRANSMISSION 722.9 without code 835/498
• 10167545During disengagement from D to N and/or from R to N some slight jolting could be experienced.
• 10166982During disengagement from D to N and/or from R to N some slight jolting could be experienced.
• 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.
• 10165844Possible minor leakage at described components or oil transfer from assembly plant.
• 10165839Shift quality complaints on TRANSMISSION 722.9 (7G-TRONIC and 7G-TRONIC PLUS)
• 10136035Complaints about poor wiping effect of winshield wiper
• 10136029SENTEX gate operator with Clik Card Remote not compatible with Homelink
• 10135628iPhone mobile phone: Various complaints after software update to iOS8
• 10135604Vehicle cannot be opened via Keyless-Go and radio remote control
• 10034306Mercedes: airbag durability and reliability. Air bag srs control module (N2/2) does not have a set shelf life and will normally be reliable for the life of a vehicle. With 164, 216 221, 251 and newer, the airbag control unit can be reset five times. With modes 202, 210 and newer, the airbag control unit can be reset three times. Earlier models would have to have their airbag control unit and triggered restrain components changed only after an accident. No models or model years listed.

Every Mercedes Benz S500 model year

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