stefanhuber1

GLA Engine Trouble Resolved

My 2020 Mercedes GLA with a gasoline engine won't start. It has 143571 km. Diagnostics say there's an engine control malfunction, and the check engine light is on. I think it's an ECU issue or maybe a total failure. Has anyone seen these engine fault symptoms or an engine surge? I checked some connections, but I don't know where to begin.

4 comment(s)

I had a similar problem with my GLA. Check your battery cable connections carefully. A bad connection can cause ECU issues.

Thanks. What do you mean by 'carefully'? Which connections should I check, and what should I look for? Is there a test to confirm a bad connection?

Make sure the connections are clean and tight. Corrosion stops current flow. If it still happens, get professional diagnostics.

You were right! It was a bad connection on the battery terminals. I cleaned them and tightened everything, and the car started. The garage charged me 155€ for the cleaning, which seems fair. Thanks for your help!

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