39 problems related to brake electric antilock have been reported for the 1998 Audi A4. The most recently reported issues are listed below.
Major hesitation when brakes are wet. (one to two second delay).
Wet braking problem.
Wet braking delay; 15 occurrences a guess, but is any heavy rain - when intially hit the brakes in heavy raing, get no braking action, sometimes for over a second. Pedal is firm, feels normal. After about a second, water washed off rotors and braking is normal. Complained to dealer, but they say have to drive car under these conditions before can take action - "haven't heard of any other complaints". Difficult to do when am 1 hr away from dealer and have to suddenly take off from work and drive to them, hoping that rain continues. Have driven/owned cars since 1969, had previous 1990 Audi - experienced no such problems on any previous vehicle.
Every time it rains it is nearly impossible to brake the car, even thought the brakes work properly in the dry. I have had this problem ever since the purchase, but have decided to report it only now. The car seems to actually go faster when initially pressing the brake pedal, and oly after about 2 seconds it starts to show some sign that it is actually braking the car. This makes the car, which is basically new, unsafe to drive in the rain.