SommerUdo
Mercedes AMG GT Hybrid Start Stop Problem
Summary of the thread
A 2020 Mercedes AMG GT Hybrid is experiencing a start-stop problem where the engine shuts off but fails to restart automatically, accompanied by a warning light and error message. The issue is suspected to be related to the battery, as similar problems in other vehicles have been linked to battery issues. Checking the battery voltage with a multimeter or consulting a professional for diagnosis is recommended. Ultimately, the problem was confirmed to be a defective battery, which was replaced to resolve the issue.
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4 comment(s)
SommerUdo (community.author)
I have not checked the battery voltage. Do I need special equipment, or can I do it myself? The car has been driven regularly.
siegfriedeagle41
You can check the voltage with a multimeter, but if you aren't comfortable, take it to a workshop. Considering the error codes, a professional diagnosis is best. It sounds like a battery, but they can confirm and check for other causes.
SommerUdo (community.author)
Thank you for the advice. You were right, it was a defective battery and needed replacing. The repair cost 290€. I appreciate you sharing your experience.
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MERCEDES
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AMGGT
siegfriedeagle41
I had a similar problem with my BMW. The engine stalling and warning lights sound familiar. It was a battery issue. Have you checked the battery's voltage lately? A heavily discharged battery can cause the start-stop system to fail. Has the car been sitting?