07 A6 quattro, suddenly my mmi screen turns on then goes black, radio controls dont illuminate, a tapping noise coming from my speakers and esp, brake light and abs light come n goes. What is the issu

SOURCE: ESP/ABS warning lights illuminates

the abs switch could be going bad or the relay for it could be weak.the relay is under the hood.have it checked taking care of one problem could solve the other

SOURCE: I have a 03 Audi A6 Quattro with the ESP & ABS light on

It's probably your brake check switch going bad, it's under the driver's side dash above the brake pedal. I had the same problem and eventually my cruise control and brake lights stopped working when it failed completely. This is also a redesigned part that you can get from the dealer for about $8, which to me indicates they new the part caused problems and failed to notify owners. Try that before Audit tries telling you wires are faulty.

SOURCE: abs and brake light is flashing on my 99 audi a6

If you need to repair the brake module, there is a fantastic article, complete with photos, at http://www.audiworld.com/tech/elec116.shtml

I followed this example for my '98 and now it works perfectly. I found a shop on eBay to rebuild my module (lifetime warranty) for under $200. It took me about 1 hour to pull it off and about 45 min to put it back on with minimum shop tools

ElDopa

• 295 Answers
• Posted on Aug 17, 2009

SOURCE: golf gt tdi 2.0 140 bhp mk 5 - esp light

When there's something wrong with the brake pressure that handbrake warning light comes on.

The ESP warning light could be caused by a lot of things, but most likely it's a dirty fuel filter. Don't take my word for it though, just go to the VW dealer and have it read the faultcodes from the ECU, which should point you/them in the right direction.

Alternatively, when you have the right equipment (= VAGCOM + cable) and knowledge, you or a friend yould diagnose the ECU yourself.

From the sounds of it, you'll need a small service (air filter and oil filter change, etc.) anyways. Don't forget to reset the ECU (or dis- and reconnect the battery) afterwards to erase the faultcode from memory (when there's still something wrong, it'll return soon enough).

You might get lucky with a small service :)

SOURCE: Audi A6 quattro 1999 the ABS light is on and the

That indicates that the ABS controller is having issues. The ABS controller is the metal box along the driver's side of the engine, just in front of the coolant overflow tank. The controller is the black box on top of it with the harness attached. You can buy a new one (expensive) or send yours to www.modulemaster.com for a warrantied rebuild. They have a great reputation on the Audi forums I frequent, and you can drive the car while it's gone (you just won't have functioning ABS while it's gone).