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HKaiser

Mercedes GLS problems (2018) with the exhaust gas recirculation or EGR valve

Unsteady engine

Shaking while idling

Strong exhaust smell

Loss of engine power

Engine shuts off by itself

Check engine light on

Hello everyone, my 2016 Mercedes GLS Diesel with 178,543 km is currently causing problems: The check engine light is on, the engine sometimes stalls by itself, has a loss of power, runs out of round, has a strong exhaust and vibrates at idle. I suspect the EGR valve. Have any of you had similar symptoms? What was the cause and what was your experience with the garage? Thank you!

(Translated from German)

4 comment(s)


TBeckRider

Hey, I had similar problems with my 2019 Mercedes GLE Diesel. My symptoms were pretty much exactly the same: Check engine light on, engine sometimes shutting off by itself, loss of power, rough engine running, heavy exhaust emissions and vibrations at idle. At the workshop, the EGR valve was actually identified as the culprit. The valve was completely clogged and jammed. It had to be replaced. That was quite a big job because the EGR valve is quite hidden and the mechanic had to remove quite a bit to get to it. But after the repair, the engine ran perfectly again and the symptoms were all gone. Hope this helps you. Best regards!

(Translated from German)

HKaiser (Author)

Hey, that sounds pretty similar to my problems. Do you happen to remember how much the repair cost? Has anything happened to you again since then? Thanks for the info! Regards!

(Translated from German)

TBeckRider

Hey, yes, I can tell you that. It cost me €355 to repair the EGR valve. Since then, my GLE has been running smoothly again and the original symptoms have been successfully resolved. The functional fault in the EGR valve has therefore been completely rectified and nothing else has occurred so far. Hope this helps you! Good luck with your GLS! Best regards!

(Translated from German)

HKaiser (Author)

Hey, thanks for the detailed info! I'm reassured to know that you were able to fix it successfully. I will probably make a workshop appointment and have the EGR valve checked. Hopefully that will be the solution to my problems. I'll let you know how it turns out. Thanks again! Best regards!

(Translated from German)

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