IllustrationCONSTANT CODE PO171
2003 MERCEDES-BENZ SLK230
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all SLK230 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
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: 5 of 5 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.
- Exterior Lighting. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. 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
5 reportsMY DRIVERS SIDE BRAKE LIGHT HAS BEEN REPAIRED OR REPLACED 11 TIMES. THE RECALL TO FIX IT FAILED AND MERCEDES WONT CORRECT THE TAIL LIGHT SYSTEM. NO BRAKE LIGHT IS EXTREMELY DANGEROUS IN TRAFFIC, IN MAKING LEFT TURNS ESPECIALLY! BRAKING IS THE MOST IMPORTANT LIGHT FUNCTION ON ANY VEHICLE!
WHEN DRIVING AT NORMAL SPEED THE FRONT PASSENGER SIDE WHEEL LOCKS UP. THIS HAS HAPPENED AT 40 MPH (IN TOWN) AND ALSO 65 MPH (ON HIGHWAY), ALMOST CAUSING ME TO HIT ANOTHER CAR AND RUN OFF THE ROAD. ITS HAPPENS TWICE FOR ONLY 3 SECONDS AT A TIME. THE BAS, SAP AND EMERGENCY LIGHTS ALL COME ON AT THIS TIME.
TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SLK230. THE CONTACT STATED ON MULTIPLE OCCASIONS THE VEHICLE FAILED TO IMMEDIATELY START WHEN TURNING THE IGNITION KEY. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE LOCAL DEALER MERCEDES-BENZ OF BEAVERTON LOCATED AT 9275 SOUTH WEST CANYON RD PORTLAND OR 97225 WAS NOTIFIED OF THE FAIL…
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TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SLK230. THE CONTACT STATED ON MULTIPLE OCCASIONS THE VEHICLE FAILED TO IMMEDIATELY START WHEN TURNING THE IGNITION KEY. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE LOCAL DEALER MERCEDES-BENZ OF BEAVERTON LOCATED AT 9275 SOUTH WEST CANYON RD PORTLAND OR 97225 WAS NOTIFIED OF THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 184,000.
TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SLK230. THE CONTACT STATED THAT THE BRAKE LIGHTS WERE DEFECTIVE. WHILE THE CONTACT WAS DRIVING TO WORK, A FELLOW MOTORIST FLAGGED HER DOWN AND ALERTED HER THAT THE BRAKE LIGHTS WERE NOT WORKING. THE CONTACT TOOK THE VEHICLE TO MERCEDES-BENZ OF NORTH OLMSTED (28450 LORAIN RD, NORTH OLMSTE…
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TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SLK230. THE CONTACT STATED THAT THE BRAKE LIGHTS WERE DEFECTIVE. WHILE THE CONTACT WAS DRIVING TO WORK, A FELLOW MOTORIST FLAGGED HER DOWN AND ALERTED HER THAT THE BRAKE LIGHTS WERE NOT WORKING. THE CONTACT TOOK THE VEHICLE TO MERCEDES-BENZ OF NORTH OLMSTED (28450 LORAIN RD, NORTH OLMSTED, OH 44070, 440-716-2700) TO BE SERVICED. THE DEALER FOUND A NAIL INSIDE THE FRONT PASSENGER SIDE TIRE. THE DEALER STATED THAT THE TIRE NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED ABOUT THE BRAKE LIGHT FAILURE AND WAS INFORMED THAT THE VEHICLE WAS PREVIOUSLY INCLUDED IN NHTSA CAMPAIGN NUMBER: 05V505000 (EXTERIOR LIGHTING). THE MANUFACTURER OFFERED NO FURTHER ASSISTANCE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 80,347.
Official recalls
0No 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
0No exact-year investigations in this snapshot.