Six problems related to brake electric antilock have been reported for the 1997 Audi A4. The most recently reported issues are listed below.
Braking performance seems to be dramatically reduced in wet, and especially wet and cold, conditions. This happens often, but does not happen regularly, and always after prolonged high-speed driving without brake application. The reduction in performance seems much more dramatic than would be expected from typical reduction in brake performance in these conditions.
Control arm bushing started squeaking indicating failure - did not know that the vehicle's instability at higher speeds and inability to track in a straight line were also due to worn control arm bushings. . Read more...
In wet weather, the effectiveness of the brakes is greatly reduced. There is about a 3 second delay before brakes begin to grab.
Wet braking delay. Brake rotors seem to gather water on highway -even in light rain, and cause delayed stopping. When the pedal is pushed down it can take a couple seconds for the brakes to repond, causing an unsafe condition in emergency situations.
Significant braking delay under wet conditions.
Very poor initial braking in wet conditions, ex. Rain or snow.