Yellow ABS and Traction control light on - Help!

[Mr Tibbs]

Hello guys.

I have an Audi A4 TDI 2000.

When i drive on the motorway for more than 40 minutes i get a litte atraction control light on permantly, as well as the ABS warning light on my dash (both yellow warning lights, both constant).

If i push the traction control button the lights dont change at all. The car drives fine when the lights are on, and if i pull over, turn ignition off and on i get another 20 - 30 minutes without the warning lights.

Any idea what this could be, and if so is this an expensive thing to fix?

Really appreciate all help.

[spartacus 68]

You'll need to get the car scanned with vagcom to at least help pinpoint the problem. If the ABS light is on (and you've no problems with braking), then it's more than likely a control module, sensor issue, ABS pump, etc. They'll clear the errors, and then investigate when they come back on.