Hello guys I was wondering if anyone could help me with this issue I am having. 2002 A4 3.0. I replaced the battery with a new one, since then, when I am driving the Brake Light in the dash comes on as though the emergency brake is on. It flashes. Any idea why or how I can fix this? Thanks in advance.

 

if you have access to vag-com you can check for codes. another thing to check for is your brake fluid. on startup does it beep at you and flash? the light will flash if the brake reservoir is low on brake fluid.

 

QFT Check the reservoir