oil pollution in the ECU CLS 63

[Needsnewtyres2]

I have discovered that my cam sensors are leaking, possibly along with the magnets, and I am experiencing issues with the engine, particularly when cold, although it has begun to occur while warm as well, especially during acceleration from a standstill. The engine revs fluctuate erratically when the vehicle is barely in motion, indicating improper engagement during acceleration. This issue also occurs during reverse, although it improves as the engine reaches optimal temperature. Idling can be somewhat challenging as well. Upon observing the sensor leakage, I have linked the issue to the ECU, which has experienced infiltration. However, I have not yet opened the ECU for inspection. A persistent warning light for the O2 sensors in bank one has reappeared, despite their replacement, leading me to suspect the ECU is at fault. Is it possible to save the ECU? Will I need to repair the wiring harness?

[Black_raven]

This issue has occurred in MB models; I recommend consulting an MB professional experienced in wiring and ECU cleaning.
What is your location for a recommendation?
Do you possess any warranty for the vehicle?

[Needsnewtyres2]

I have encountered extensive web literature indicating that this issue is prevalent across many Mercedes models; I reside in Bristol. I do not possess a warranty for the vehicle, unfortunately.

[Black_raven]

Steve at Avantgarde A Mercedes specialist located in Clevedon, near Bristol, can assist you or provide guidance on the optimal course of action.

[QuirkyPixel]

When did you purchase the vehicle? Did you purchase it from a dealer or a private seller?

[MDMH757]

Information regarding Steve.

[MDMH757]

https://avantgarde-automotive.co.uk/

[heralder]

Firstly, I appreciate the recommendations, as usual, gentlemen.

The leaking cam sensor magnets are unlikely to be the cause of your trouble. Oil is non-conductive, allowing us to place oecus in oil consistently without adverse effects.


It appears you may be experiencing an alternative issue, either a malfunctioning thermostat leading to a cold start mixture problem, a defective injector, or possibly another factor. Contact us if you would like us to examine it.