charleslight1

GLA Hybrid Heating Issue Resolved

My 2021 Mercedes GLA Hybrid has a heating problem The rear window heating doesn't work, there's an error code, and the auto defrost isn't working I think it might be the battery Has anyone else had this issue with their car defrost or rear window heating?

4 comment(s)

Sorry to hear about the GLA's problems A weak battery can cause electrical issues, especially with the heating system When did you last check or replace the battery? Got a multimeter? Checking the voltage would be a good start

Thanks I have a multimeter What voltage is critically low and could cause the heating issue?

If the voltage is below 12.4V after the car's been sitting, the battery might be the problem A load test is best to see if it can still power the car defrost and rear window heating Given the error code and battery cost, a workshop diagnosis might be smart

Thanks for the advice I took it to a workshop and it was a bad battery It cost 290€ to replace The rear window heating works now

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