i have a 99 avant a4 1.8 t ive had this car for about 4 months.the car drives ok
, i have to do maintanece. today i was driving and my outside weather indicator
stop working,when i go check the other things horn rear defogger,windshield wipers ,rear wiper head lamps stop working.ive check the fuses and all of them are working okay i dont know where to start because audi vehicles only carry 1 fuse box . help me i cant even drive this car around because all of the safety are
not working. what should i do please help me

 

Relay. The car has a lot of them. I blew one and lost turns 4 ways fog lights heater... It sucked and took about 2 days to figure it out. There is a row of relays on the driver side against the firewall on the inside of the car. If it's not a relay you might have lost power going to that "section" of the fuse box. I'd put $$$ on relay tho.

 

Start pulling relays one at a time and testing it out. If you pull one and there's no change, you may have found the culprit.