Hello all. I got an 03 A6 3.0. I recently have the brake light switch changed because the brake and stop lights wouldn't go off when the car is off. Once I have that resolved, I noticed that the ABS and ESP lights turned on when I pressed the brakes and stayed on. The lights don't turn on when I start the car only when I start using the brakes. Could it be a sensor problem or resetting? or anything else? Thanks in advance for any info.

 

sounds like a faulty break peddle switch but need codes to confirm