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miahartmann1
Transit Electric Auxiliary Battery Issue
4 comment(s)
miahartmann1 (Author)
Thanks for the quick response! The error message was pretty generic, something like "Auxiliary Battery Malfunction". The code reader gave me a B1000 error code, which, from what I've gathered, is pretty vague and could mean a few different things related to power management. Did your Audi throw the same code, or was it something different?
juliuseule1
The error code I received differed from yours, however, the underlying cause may be analogous. Given the symptoms you describe and the non-specific error code, it is highly probable the auxiliary battery is not being charged correctly. This could stem from a faulty charging circuit, a defective battery, or a software issue within the vehicle's power management system. Given the complexity of modern automotive electrical systems, and the potential need for specialized diagnostic equipment, I would strongly advise consulting a qualified technician. A workshop will be capable of performing a thorough assessment and implementing the appropriate rectification measures.
miahartmann1 (Author)
Thanks so much for the detailed explanation and advice. I took it to the shop as suggested. Turns out the auxiliary battery wasn't charging because of a faulty connection. They cleaned it up, and ran some tests and the battery itself was fine. The total repair cost was 290€. Really appreciate the help!
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juliuseule1
Greetings. Your symptoms do indeed suggest an issue with the auxiliary power system. I encountered a comparable problem with my previous vehicle, a 2018 Audi A4. These vehicles often utilize an auxiliary battery to support various electrical systems, such as the start-stop functionality and other comfort features. In my case, a faulty voltage regulator was preventing the auxiliary battery from receiving adequate charge, leading to similar error messages and electrical anomalies. Was your error message specific, and what trouble code did your reader display?