Four problems related to brake light on have been reported for the 2000 Audi S4. The most recently reported issues are listed below.
Communication failure from the abs module, it causes the abs light to stay lit and the brake light flashes, when this happens the abs does not work on the car, it's a very common problem with these units but Audi hasn't done a recall. This will be the second time I have to replace this unit out of pocket since I've owned my 2000 Audi S4.
My abs and brake lights come on irractly while driving. I have checked the and filled the brake fluid resivor like the manual states. But still get the lights. Apparently this is a very common problem from Audi. The saftey of many people are at stake here. I will not and have not driven my car since the lights came on, and my local Audi dealership want $1,400. To replace! thas ridiculous for a car that has barely 54k miles. You would think something as important and life saving as the brake system would have a better design and lower failure rate. Im positive that I am not the only Audi owner that has filed a complaint and postive I will not be the last. Thank you for you time luis castellanos.
While driving the brake and abs lights came on. The owner took the vehicle to the dealer and was told by the dealer that this defect can cause the other controllers to do damage and effect the instrument cluster. It can also effect the engine controller. The owner also contacted the manufacturer who did not think that this problem was of needed interest. Provide further details.
The abs and brake lights on my dashboard initially flashed and beeped intermittently, but now are on constantly. Upon researching the issue, I've discovered that this is a problem experienced my many other my2000 S4 owners. This is a significant safety issue, as there is the risk that brakes may lock up (even when releasing the pedal) under braking when experiencing these symptoms. Please take action on this issue. I know many owners who have no choice but to hold off on the repair due to the amount being charged by dealers to replace the part (~$1700. 00), even though the most likely culprit of the problem is wiring between the controller and the ecu (<$1. 00).