I am looking for the same information. I have a 2002 A6 also and my turn sugnal flashes twice and stops. Have you fund out anything yet?
Replace turn signal flasher
The turn and hazard flasher relays are incorporated into hazard switch.
The flasher is right above the fuse box, pull it out, and replace it with a good one.
It's in the hazard warning switch. You need to replace the switch.
Check: Fuse Turn signal flasher Switch at steering column Bulbs
The turn signal flasher relay is located behind the hazard light switch, which you can access by removing the associated dash trim panel
bad bulb, relay, wiring, turn signal switch
The first and least expensive thing I would do is replace the turn signal flasher. If the flasher is weak, then it could act-up just as you have suggested. The turn signal flasher is a separate system then the four way or hazard flashers even though they use the same bulbs. Generally, the turn signal flasher (which simply plugs in) is located near the steering column but on your model I would suggest you purchase it from your dealer and ask them to print out the picture of the flasher which will show you it's location. I you. Mark
1996-2001 Audi A4 1998-2005 Audi A6 1997-2003 Audi A8 The flasher is located on the dash above the radio, it is te same unit as the hazard switch.
Behind the flasher switch in the centre console.
Very
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