BMW X5: Overview Of Brake Master Cylinder / Brake Booster
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Fig. 62: Identifying Brake Master Cylinder/Brake Booster Components
- Brake booster
- Expansion tank
- Vacuum hose
- Brake master cylinder
- Bleeding braking system
REMOVING AND INSTALLING / REPLACING EXPANSION TANK FOR HYDRAULIC BRAKE ACTUATION
Necessary preliminary tasks:
- Read and comply with General Information.
- Remove left microfilter housing cover.
NOTE: Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.
Unfasten plug connection (1) and disconnect.
Remove wiring harness from holder (2).
Release screw (3) and lift off expansion tank.
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Fig. 63: Removing Wiring Harness From Holder
IMPORTANT: Check rubber plug in brake master cylinder for damage and replace if necessary.
Push the expansion tank vertically onto the master brake cylinder.
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Fig. 64: Locating Rubber Plug In Brake Master Cylinder
REMOVING AND INSTALLING / REPLACING MASTER BRAKE CYLINDER FOR DSC
READ NEXT:
Removing And Installing / Replacing Master Brake Cylinder For DSC
Special tools required:
32 1 27032 1 270 PLUGS (SET)
Necessary preliminary tasks:
Remove expansion tank.
Read and comply with General Information.
After completing tasks, bleed brake system wit
Brake Lines
OVERVIEW OF BRAKE LINES
1. Brake hose, front.
2. Brake tubes.
3. Brake hose, rear, to body.
4. Brake hose, rear, to wheel brake cylinder.
REPLACING ALL BRAKE PIPES
Special tools required:
34 5 100
Brake Booster
REPLACING VACUUM HOSE FOR BRAKE BOOSTER (N52K)
IMPORTANT: Before beginning work, fully press the brake pedal several
times to reduce the
vacuum pressure in the brake booster. This makes it easier to
SEE MORE:
Regulator
MANUAL EMERGENCY RELEASE OF TRANSMISSION LOCK
In the event of a power supply interruption, e.g. flat battery or electrical
fault, the transmission lock must be
manually released, otherwise the wheel will be locked and the vehicle cannot be
moved.
IMPORTANT: Secure vehicle against rolling, e.g. wit
System limits - Active Cruise Control with
Stop&Go function ACC
System limits
System limits of the sensors
Additional information:
Cameras
Radar sensors
Detection range
The detection capability of the system and the
automatic braking performance are limited.
Two-wheeled vehicles for instance might not be
detected.
Deceleration
The system does not decelerate
