Failed ignition coil packs or spark plug resistors can cause a rough running motor or lack of power.
Rough running motor/lack of power due to failed ignition coil packs/spark plug resistors on Mercedes-Benz S320
Average mileage: 169,250 (113,000–225,500)
9 people reported this problem
Viewing 1 - 3 of 3 comments
i changed my coils and spark plugs and wires and engine light still on and car is mis firing
slow take off and rough running motor
Coil number 6 failed and was replaced - now at 117000, other 2 coils failed also