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What is wrong when ABS light Brake and traction control lights are on in 2002 BMW 325?

Possible causes for the ABS, Brake, and traction control lights being on in a 2002 BMW 325:

1. Wheel Speed Sensor: A faulty wheel speed sensor can prevent the ABS and traction control systems from functioning properly, causing the lights to illuminate.

2. ABS Control Module: A malfunctioning ABS control module can disrupt the communication between the sensors and the ABS system, leading to the activation of the warning lights.

3. Low Brake Fluid: Insufficient brake fluid can trigger the brake warning light. Check the brake fluid level and top it up if necessary.

4. Faulty Brake Light Switch: A defective brake light switch can cause the brake and ABS lights to come on simultaneously.