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2003 Mercedes Benz S500

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 8 of 10 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Seat Belts. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

What owners actually said

10 reports
Mileage unknown · May 26, 2020
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 BELT GETS JAMMED WHEN TEMPERATUR…

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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

NHTSA ODI #11326090

63,250 miles · Nov 26, 2018
Exterior LightingSeat 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.

NHTSA ODI #11153939

147,000 miles · Dec 11, 2015
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 14…

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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.

NHTSA ODI #10809693

162,000 miles · Sep 30, 2015
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 CLUSTER FAILED. THE VEHICLE WAS NOT R…

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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.

NHTSA ODI #10778800

100,000 miles · Sep 20, 2014
Seat Belts

THE SEAT BELTS WILL PERIODICALLY NOT EXTEND. *TR

NHTSA ODI #10637753

28,000 miles · Aug 11, 2014
Seat Belts

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 NOT…

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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.

NHTSA ODI #10621368

55,000 miles · Oct 11, 2013
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 WAS CORRODED, AND I WOULD NEED …

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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

NHTSA ODI #10547686

12,905 miles · Oct 3, 2004
Service Brakes, Hydraulic

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 FAILUR…

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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

NHTSA ODI #10097157

Mileage unknown · Dec 15, 2003
Equipment

THE CONSUMER TOOK THE VEHICLE TO THE MANUFACTURER FOR FINAL REPAIRS, HOWEVER THE PROBLEM STILL EXISTED ON WITH AIR CONDITIONER. *LA NAR *CB *JB

NHTSA ODI #10051713

250 miles · Feb 13, 2003
Engine And Engine CoolingPower Train

THE GEARS BECAME STUCK, AND THE ENGINE DID NOT SHUT OFF, CONSUMER HAD TO DISCONNECT THE BATTERY TO SHUT OFF THE ENGINE.*JB

NHTSA ODI #10007378

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.