Bleeding brake system with DSC (X5 M)
- Read and comply with GENERAL NOTES .
- Tandem brake master cylinder
- Hydraulic unit
- Components and connecting lines which are fitted between these assemblies.
Connect bleeder unit with max. 2 bar filling pressure.
A second person is needed to help carry out this work.
Use only BMW-approved fluids. See the Fluid Capacities tab for the selected vehicle.
Connect the Diagnosis and Information System at the vehicle.
Dial into service function brake bleeding routine.
Connect bleeder unit (1) on expansion tank and switch on.
Completely flush brake system, rear.
Connect tank ventilation line (1) with collecting vessel to vent valve on rear right brake caliper.
Open bleeder valve and purge until clear, bubble-free brake fluid emerges.
Close vent valve.
Carry out the same procedure on the rear left wheel brake.
Completely flush brake system, front right outer.
Connect tank ventilation line (1) with collecting vessel to vent valve on front right outer brake caliper.
Open bleeder valve and purge until clear, bubble-free brake fluid emerges.
Close vent valve.
Completely flush brake system, front right inner.
Connect tank ventilation line (1) with collecting vessel to vent valve on front right inner brake caliper.
Open bleeder valve and purge until clear, bubble-free brake fluid emerges.
Close vent valve.
Carry out the same procedure on the front left wheel brake.
Bleed the rear axle brake circuit.
Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.
Open vent valve.
Run brake bleeding procedure using the diagnosis and information system with the vent valve open.
After completing routine, press brake pedal 5 times to floor; clear and bubble-free brake fluid must flow out.
Close vent valve.
Repeat procedure at rear left.
Bleed right outer front axle brake circuit.
Connect vent hose with collecting vessel to vent valve on front right brake caliper.
Open vent valve.
Run brake bleeding procedure using the diagnosis and information system with the vent valve open.
After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.
Close vent valve.
Bleed right inner front axle brake circuit.
Connect vent hose with collecting vessel to vent valve on front right brake caliper.
Open vent valve.
Run brake bleeding procedure using the diagnosis and information system with the vent valve open.
After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.
Close vent valve.
Carry out the same procedure on the front left wheel brake.
Switch off bleeder unit and remove from expansion tank.
Check brake fluid level. If necessary, top up/draw off to "Maximum" level.
Close expansion tank.