45-2
Notes for repair work on ABS, ABS/EDL
Before doing any repair work on the anti-
system, determine the cause of the malfunction
using On Board Diagnostic (OBD).
Repair Manual, Brake System On Board
Diagnostic (OBD), Repair Group 01
Before working on the ABS, ABS/EDL system,
disconnect the battery Ground strap. On
vehicles with coded radio, obtain cooling.
When working with brake fluid, observe the
relevant safety precautions and notes Page
47-27 .
After work for which the brake system had to be
opened, bleed the brake system with brake filler
and bleeder unit VAS 5234 Page 47-27 .
During the final road test, make sure that a
controlled brake test is performed at least once
(pulsations must be felt at the brake pedal).
Absolute cleanliness is required when working
on the anti-locking brake system; it is not
permitted to use any products which contain
mineral oils, such as oils, greases etc.
locking Brake System (ABS) and Anti
locking Brake System with Electronic Differential Lock (A
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