Audi A4 (1994 – 2001) ABS Pump

Audi A4 ABS Control Unit Repair

Three beeps, a solid amber ABS light and a flashing red brake warning — A4 owners describe that sequence as a sign of an ABS unit fault. The ABS pump and control unit monitors the wheels and modulates brake pressure to prevent lock-up; once it faults, ABS is normally disabled while the ordinary brakes keep working. The flashing brake warning deserves prompt attention, and the ABS light will fail an MOT. We repair your own A4 unit and return it ready for your garage to fit.

A4 ABS Warning Signs

• Three warning beeps from the instrument panel
• ABS light lit solid
• Red brake warning flashing with it
• ABS not working during an emergency stop
• Fault codes stored in the ABS unit

Rule Out Fluid and Sensors

Because the red brake light is involved, check the brake fluid level first, then the wheel-speed sensors and wiring. Our guide to A4 ABS problems explains the common pattern in more depth. If it matches, describe the warnings on the repair form or contact us.

Why Choose Sinspeed?

✅ Lifetime warranty — there is no mileage limit to watch

✅ Wheel-speed signals simulated on our bench to prove the repair

✅ Fully function tested, then returned as the same unit with its coding intact

Note the warning sequence on the repair form, and we will reply with how to post the unit.