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robinmoore1

Mercedes GLS Hybrid rough engine and stalling issue

My 2023 Mercedes GLS Hybrid engine runs rough and stalls, especially when idling. The check engine light is on, and acceleration is jerky. Could a defective ignition coil be the problem?

Summary of the thread

A 2023 Mercedes GLS Hybrid experienced rough engine performance, stalling, and a check engine light, with jerky acceleration. The issue was suspected to be a defective ignition coil. After inspection, it was confirmed that both the ignition coil and a cable connection were faulty. Replacing the ignition coil resolved the problem.

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4 comment(s)

janbraun31

I had a similar issue with my Mercedes GLS, including the check engine light and rough idling. The ignition coil is a likely suspect. It's worth investigating the ignition system thoroughly, as a defective coil can cause those symptoms.

robinmoore1 (community.author)

Can you share more about your experience? Did you have jerking during acceleration? Was a cable or plug connection the definitive cause?

janbraun31

Yes, I had jerking during acceleration. A faulty connection can contribute, but a failing coil can also be the cause. I suggest having a workshop inspect your vehicle to pinpoint the source.

robinmoore1 (community.author)

Following your advice, a workshop inspected my vehicle. It was a defective ignition coil, and the cable connection was also defective. The repair was 95€. The new ignition coil fixed everything. Thanks again!

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MERCEDES

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GLS