where are light relays on A3?

**petrolhead63** · 07-07-2012,01:53 PM

the lights on our 2002 1.9tdi sport have failed, only side lights on dipped beam, then on main beam we get outer lights but no inner ones.

This is not likely to be fuses and I suspect a relay..........but where are the light relays?

Help appreciated

thanks guys

**kite** · 07-07-2012,02:40 PM

I would suspect the switch itself, try to get a spare one to try.

**petrolhead63** · 07-07-2012,07:47 PM

Originally Posted by kite

I would suspect the switch itself, try to get a spare one to try.

its my wifes car this, so not sure on things ;0)

What should be on for dip and main? outers on dip and all four on main?

It is curious that there is nothing on dip and only outers on main!

**Crasher** · 07-07-2012,08:59 PM

If fuses 20 and 21 are intact but the main beams work OK and so does the blower fan, glove box light and wipers, this points to the headlight switch as if the X relay was at fault or the ignition switch was not putting out its X signal, other parts would not work.

**petrolhead63** · 09-07-2012,02:47 PM

Thanks for the help so far, I am puzzled with this one so will outline the symptoms again. I dont want to waste cash and time pulling the car apart to do the wrong part!

Everything works except the headlight fault and the existing dodgy radio reception!
Sidelights come on with the turn switch and panel illumination all comes up.
Turn it to main light position with stalk in dip beam position and sidelights stay on but NO headlights.
If the headlight stalk is moved to high beam the outer dipped headlights come on!! but no inner main lights.
Put it back to dip and it only has sidelights..no dipped outer lights though they work in main beam position.
It is worth noting the blue hi beam indicator on dash works suggesting the stalk hi/lo switch works?

What puzzles is the fault is on both dipped and main beam, on dip it only has sidelights but then on main the dip lights come on but not the extra main lights.

I am unsure whether to try the stalk switch. the light master switch or relays ;0(