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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

Electrical System complaints

2 reports
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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

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

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.