christopherwagner2
GLA Hybrid Battery Electrical System Problems
Summary of the thread
The conversation centers around electrical issues with a 2022 GLA Hybrid, specifically error messages and flickering lights. The problem was traced to a defective battery sensor, which can cause significant electrical system disruptions by misinterpreting the battery's state. The suggested solution was to have the vehicle checked at a workshop, where the faulty sensor was confirmed and replaced, resolving the issues.
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4 comment(s)
christopherwagner2 (community.author)
Terminals are clean, and there are no new electronics. Could a faulty battery sensor really cause all that? It seems extreme for just a sensor.
LenWin
A faulty sensor can really mess with the electrical system. The car misinterprets the battery's state, leading to all sorts of problems. Given the symptoms and error codes, it's likely the cause. I'd say it's time to visit a workshop.
christopherwagner2 (community.author)
Thanks! You were spot on. The workshop diagnosed a defective battery sensor. Total cost was 315€. Now the battery drain issue is gone and all error messages are gone as well. Appreciate the help!
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MERCEDES
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GLA
LenWin
That sounds like what happened with my GLA. I had similar gremlins, error messages, flickering lights... did you check the battery terminals for corrosion? Any aftermarket electronics installed?