Why does my battery keep dying in my audi 1997 a6? When it's running and the fan kicks on the voltage meter jumps down. When the lights are on and then fan kicks on my lights dim.

SOURCE: fan motor keeps running on Audi A4 2004

fan motor has a thermal switch which turns on the fan as soon as the engine heats up. what happened there is that the switch is stuck on the closed position which keeps the fan on all the time. you should go to a garrage and have the part changed.

SOURCE: The battery on my 2003 Audi A6 keeps dying. I

Sound's like a bad alternator, you can check the alternator by measuring the voltage on the battery when the car is started, it should measure above 12.6 volt's but not higher than 14.5 volt's, check the drive belt tension, a lose or wore drive-belt could cause problem's with the alternator charging the batery, check the battery terminal's for corrosion, along with the connection's of the battery cable's.
Hope this help's, good luck.

SOURCE: 98 Audi A6, Battery died overnight, when jumping smoke rises

Sounds like the alternator is badly damaged. The alternator will drain the battery if the regulutor or diode assembly goes out and/or the alternator is seized or locking up, which will cause the smoke (belt slippage) and drag on the engine (rough idle).

Ned C Cook

• 3433 Answers
• Posted on May 31, 2009

SOURCE: 03 Audi A4- Coolant fan runs until the battery dies

What does the fan do when you restsrt/charge the battery? Start up again? Replace the sending unit, or unplug the sending unit first. If fan keeps running, the relay is faulty.
if it stops, the sending unit is at faulat. good luck

SOURCE: Battery Dead, can't get into trunk to jumpstart

I TRIED THIS ALTERNATOR RED WIRE FIX TODAY,ALTHOUGH I DID GET IGNITION,WHEN I TRIED TO START IT BLEW A FUSE.ANYBODY KNOW ABOUT THIS.