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Mercedes-Benz SLK230 Problems

Check Engine Light and Engine Misfire on Mercedes-Benz SLK230

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.

(10 people reported this problem)

Mercedes-Benz SLK230 Vehicles With This Problem

RepairPal Fair Price Estimate
$1103-$1353
RepairPal Verified
Average mileage: 99,500 (84,000–115,000)
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004
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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-2 of 2 comments
The engine started to misfire at times. After a cool-down it would again operate OK. The check engine light would illuminate. Checked with an OBII tester and it indicated a misfie on #3 cylinder. Pulled the coils from #2 & #3 cylinders. Checked them with an ohmmeter. #2 had radically different reading than #2. Got a new coil for #3 cylinder. Everything now seems OK.