Front Fog lights on A4 causes Horn to sound

[LIAMMC]

I’m wondering if anybody has encountered this problem.

I have a 2003 A4 1.9TDI and when I switch on my front fog lights the horn sounds at varying intervals until I switch the fog lights off.

I’m reluctant to take my car to the Audi Dealer, as they will charge me a small fortune to have a look at this problem and would appreciate any help form the forum users in trying to solve it myself.

Regards

Liam

[Col]

They probably share a common earth somewhere under the bumper and it is that I'd look at.

Check for...

Damaged, split & frayed cables
Something disconnected
Dirty and or corroded connections.

Trace the cable(s) back from the fog lights and back from the horns and look / check for all of the above.

Good luck.

[RickT]

i have heard of this before on the A4 - B6.. if i remeber right its the light switch at fault.

i will have a look for the post i read some time back..

RickT

[LIAMMC]

Thanks BigCol I will check the cables out at the weekend.

Also RickT I would be very interested to hear if you can track down that post regarding the faulty light switch.

Liam

[RickT]

Thanks BigCol I will check the cables out at the weekend.

Also RickT I would be very interested to hear if you can track down that post regarding the faulty light switch.

Liam

i have been looking for the past 15 mins... cant find it... but i will!!!

anyway.. in the meantime.. a poor joke..... it could be a FOG HORN......

i will get my coat....

RickT