1987 Audi 5000 CS, AutomaticFACTORY OEM SERVICE PROCEDURE

All Models

  1. Item Being Tested - ABS Control Unit Test Cycle Place ABS tester in program switch position No. 16. When button No. 5 lights up, press and hold button for at least 3 seconds.
  2. When button is depressed, the anti-lock indicator light in vehicle must go out after about one second. Indicator light might flicker as return pump starts.
  3. If indicator light does not go out, repeat step 1) with engine running. If indicator light still does not go out, replace ABS control unit.
Chapter Navigation
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.