Audi a4 b7 2007, was having trouble with brake light switch, the TCS light was coming up intermittent, the old switch makes the brake lights stay on constantly, the new switch doesn't
Symptoms of a Bad Brake Light Switch - AutoZone
Audi A4 B6 Brake Light Switch Replacement (2002-2008) | Pelican Parts DIY Maintenance Article
HOW TO KNOW IF BRAKE LIGHT SWITCH IS BAD OR GOOD. TEST BRAKE LIGHT SWITCH - YouTube