Check Engine Light and Engine Misfire on Mercedes-Benz SLK32 AMG

Problem Description and Possible Solution

Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to determine which components are at fault.

Problem Data
RepairPal Verified
Average mileage: 92,050 (81,100–103,000)
3 model years affected: 2002, 2003, 2004
5 people reported this problem
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Code p0303 p0300 ; rough idle almost to a stall at stop streets. Smooths out under acceleration.