richardstar8

AMG GT engine fault and starting problem

My 2016 Mercedes AMG GT gasoline engine refuses to start. It has 243627 km. I'm getting an engine fault error and the engine light is on. I've run basic engine diagnostics, but nothing obvious is popping up. I suspect it could be an ECU failure or something related to engine stalling. Has anyone experienced something similar? Could poor cable connections of the battery cause this?

4 comment(s)

Sounds frustrating. I had a similar engine fault issue with my AMG GT, though the symptoms were a bit different. It turned out to be a dodgy battery connection. It's like trying to run a marathon with untied shoes; the car just can't perform. Have you checked the battery terminals for corrosion or looseness? Also, did you check the ground connections as well?

Thanks for the quick reply. I did a visual inspection of the battery terminals, and they seemed okay, but I didn't specifically check the ground connections. Where exactly are those located, and how would I properly test them?

The main ground strap is usually bolted to the chassis near the engine mount. A loose or corroded ground can cause all sorts of electrical gremlins, kind of like a bad earth on an old stereo system. If you are unsure, I'd recommend taking it to a workshop to check all connections properly. An ECU failure can be very expensive.

Thanks for the advice. I checked the battery cable connections, and they weren't good. I cleaned them and tightened them, and the car started right up! A trip to the workshop wasn't necessary. The repair cost was only 155€. I really appreciate the help!

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