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August 19, 2021

Autodocta – 2013 Mercedes-Benz CLS

VEHICLE: 2013 Mercedes-Benz CLS

ISSUE: Engine running problems

A service customer of ours is experiencing an issue with their 2013 Mercedes-Benz CLS 2,1 Diesel. The vehicle has engine running problems and the engine malfunction indicator lamp (MIL) is illuminated with various trouble codes stored in the engine control module (ECM) fault memory. We do not have the information relating to these trouble codes and we are not sure if they are linked. Can you assist us?

Yes, we have had reports of various trouble codes occurring on several Mercedes-Benz models produced between 03/11-02/14 with 651 engine code and stop-start system. The problem is likely to be the engine wiring harness chafing on the engine cover. Check engine wiring harness for damage and repair as necessary. Modify engine cover by cutting off section where contact has occurred (fig. 1.1.). Re-position engine wiring harness to clear engine cover and secure using a cable tie. Erase trouble codes and carry out road test to ensure the faults have been rectified.

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