1. Low Brake Fluid: Check the brake fluid level in the reservoir. If it is low, add brake fluid as per the manufacturer's recommendation.
2. Faulty Brake Pad Sensor: The brake pad sensor might be worn out or damaged, triggering the warning light and alarm. Inspect the brake pads for wear and replace them if necessary.
3. Faulty Brake Light Switch: A faulty brake light switch can cause the warning light to illuminate and the alarm to sound. Check the brake lights to ensure they are working correctly. If they are not, replace the brake light switch.
4. ABS (Anti-lock Braking System) Issues: Malfunctions in the ABS system, such as a faulty ABS sensor or module, can trigger the brake warning light and alarm. Have the ABS system diagnosed by a qualified mechanic.
5. Electrical Issues: In rare cases, electrical problems, such as a faulty wiring harness or a short circuit, can cause the brake warning light to come on and the alarm to sound. If you suspect an electrical issue, it's best to have the vehicle inspected by a professional.
6. Handbrake Engagment: Ensure the handbrake (parking brake) is fully disengaged. Sometimes if the handbrake is not fully released, it can trigger the brake warning light and alarm.
If you are uncomfortable addressing the issue yourself or if the problem persists, it's advisable to consult with a qualified mechanic or an authorized Audi service center to diagnose and resolve the issue.
