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Audi A4 Alternator Failure — Electrical Systems Warning — Audi A4 2008 | MyCarFault
⚪ UNSOLVED No confirmed fix yet · Be the first to help

Audi A4 Alternator Failure — Electrical Systems Warning

Audi A4 2008 All B8
Safe to Drive?
✅ Safe to Drive
Urgency Level
🟡 Monitor Closely

Alternator failure on A4 B8 triggers a cascade of electrical warnings as voltage drops. The MMI display shows multiple system faults. Confirm with voltmeter reading below 13V at idle. Replacement alternator costs £200-500.

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