Audi A4 Battery Drain — Telephone Module
Audi
A4
2001
All B6/B7
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely
The integrated telephone module on B6/B7 A4 stays active after ignition off if the phone bluetooth connection remains active. Drains battery within 2-3 days. Deactivating the module via VCDS or updating software resolves most cases.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Audi A4 2001 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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