BMW 7 Series: Replacing Fluid In Brake System
Necessary preliminary work
- Remove left sensor opening
- Read and comply with GENERAL INFORMATION.
IMPORTANT: When carrying out repairs to the brake system, follow the procedure set out in BLEEDING BRAKE SYSTEM WITH DSC.
Use only BMW-approved brake fluids.
Connect bleeder unit to expansion tank and switch on.
NOTE: Follow the applicable machine manufacturer's operating instructions.
Charging pressure should not exceed 2 bar.
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Fig. 9: Connecting Bleeder Unit To Expansion Tank
Fully rinse the brake system
Connect vent hose with collecting vessel to vent valve on rear right brake caliper.
Open vent valve and purge until clear, bubble-free brake fluid emerges.
Close vent valve.
Follow same procedure on rear left, front right and front left wheel brake.
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Fig. 10: Locating Vent Valve On Rear Right Brake Caliper
Switch off bleeder unit and remove from expansion tank.
Check brake fluid level. If necessary, top up/draw off to "MAX" level.
Close expansion tank.
NOTE: Pay attention to gasket (1) in sealing cap.
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Fig. 11: Identifying Gasket And Brake Fluid Level
SAFETY INFORMATION FOR WORKING ON VEHICLES WITH AUTOMATIC ENGINE START-STOP FUNCTION (MSA)
WARNING: If the engine hood/bonnet contact is pulled upwards (workshop mode), the information "switch closed" is output. The automatic engine start-stop function is active.
An automatic engine start is possible.
Observe safety precautions when working on MSA vehicles.
Before carrying out practical work on the engine, always ensure that the MSA functionality is deactivated so as to prevent automatic engine starting while work is being carried out in the engine compartment.
MSA function is deactivated by
- Deactivate MSA by means of button (1) in passenger compartment
- Open seat belt buckle and driver's door
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Fig. 12: Identifying MSA Button
- Open engine bonnet/hood and ensure that engine hood/bonnet contact is
not in workshop mode
- Workshop mode
A = 10 mm - Basic setting (engine hood/bonnet open)
B = 7 mm
- Workshop mode
To make sure that the engine hood/bonnet contact is at the basic setting, if necessary press the hood/bonnet contact up to the limit position before starting work and slowly release.
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Fig. 13: Identifying Engine Hood/Bonnet Contact Distance (Workshop Mode And
Basic Setting)
When working with diagnosis tools
- Observe instructions in diagnosis tool
READ NEXT:
Front Brakes
CHECKING BRAKE DISCS
Necessary preliminary tasks
Remove WHEELS.
Checking thickness difference:
Measure thickness difference within brake surfaces at 8 point (spread
over the circumference) with
Removing And Installing/Renewing Brake Pads On Both Front Disc Brakes
Notes
IMPORTANT:
Brake pad wear sensor: after removal it must be replaced (brake pad
wear
sensor loses its retention capability in the break pad).
Retaining spring: for vehicles older than 48 mo
Removing And Installing/Replacing Both Front Brake Discs
Necessary preliminary work
Remove FRONT WHEELS
Remove and clean BRAKE PADS
NOTE: After completing work, read and comply with notes on BRAKING IN NEW
BRAKE DISCS/BRAKE PADS.
Check minimum brake di
SEE MORE:
Tire pressure monitor
Concept
The system monitors tire inflation pressure in the
four mounted tires. The system warns you if
there is a loss of pressure in one or more tires.
General information
Sensors in the tire valves measure the tire inflation
pressure and tire temperature.
Using the tire settings in iDrive, the sy
Safety Information For Working On Vehicles With Automatic Engine
Start-Stop Function (MSA)
WARNING: If the engine hood/bonnet contact is pulled upwards (workshop
mode),
the information "switch closed" is output. The automatic engine start-stop
function is active.
An automatic engine start is possible.
Observe safety precautions when working on MSA vehicles
Before carrying out practical
