Bad Spark Plug Wires/Ignition Coils May Cause Misfires and Possible CEL on Mercedes-Benz E320
Problem overview
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.
34 people reported this problem
15 commentsMercedes-Benz E320 vehicles with this problem
8 model years affected
Average mileage: 172,779 miles
(90,500 - 209,910)
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