Audi Quattro Lighting problems by year

I have a 1999 audi a4 quatro. I've owned the car for just over 3 years and have had to replace the headlight switch 5 times. The switch is poorly designed. Electrical heat melts a plastic part in the switch causing it to fail and the headlights to stop working. This is a danger due to the potential of fire and also the loss of lighting while driving. I have researched this on the web and I am not the only audi owner with this issue. *Tr

Tl*the contact owns a 1997 audi a4 quattro. The contact stated that the headlight switch failed, which caused the headlights to shut off while driving 35 mph at night. He had to park the vehicle for the remainder of the evening. He was informed that the vin was not included in nhtsa campaign id number 06e049000 (exterior lighting). The contact repaired the failure himself. The failure mileage was 84,750. Updated 07/07/08. *Bf updated

Tl* the contact owns a 1998 audi quattro. The contact received a recall notice for the headlight switch. The dealer repaired the headlight switch. However, after the repair the dashboard warning indicator lights faded on and off and occasionally remained illuminated. When the key was removed from the ignition the radio shut off and it should continue to play. The dealer advised the contact that the failures were due to the electrical system. The contact heard a loud screeching noise while making a right turn....

The electrical system has had numerous problems and currently the turn signals often do not function although at times the work for a short period. *Nm

TURN SIGNAL QUIT WORKING. *AK