1.0 GENERAL INFORMATION
Brake fluid, (glycol-based) as used in BMW brake systems, must conform with
the following requirements:
High boiling point
Good low temperature resistance
Low compressibil
WARNING: Danger of injury!
Drain the air spring system before carrying out any work on the air supply
unit, air pipes and air springs! Danger of injury if this instruction is not
complied with!
Risk of damage!
Extreme cleanliness must be ensured in the connection area of the pipes
during removal and
Special tools required:
34 1 050.
34 1 280.
IMPORTANT: The brake pad wear sensor must be replaced once it has been
removed (brake
pad wear sensor loses its retention capability in the brake pad).
Necessary preliminary tasks:
Remove wheels.
Remove brake pad wear sensor.
Fig. 42: Identifyin