34 00 050 Bleeding brake system with DSC (X6 2015-2019)
Necessary preliminary tasks:
- 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 brake fluids: BMW brake fluid DOT 4 with low viscosity, part# 83 13 0 443 026 .
Connect Diagnosis and Information System at vehicle.
Select the brake bleeding procedure service function.
Charging pressure should not exceed 2 bar.
Connect brake fluid changer (1) to the expansion tank and switch on.
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.
Bleeding rear axle brake circuit
Connect vent hose with collecting vessel to vent valve on rear right brake caliper.
Open vent valve.
Run bleeding routine with DIS with bleeder 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.
Bleeding front axle brake circuit
Connect vent hose with collecting vessel to vent valve on front right brake caliper.
Open vent valve.
Run bleeding routine with DIS with bleeder 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 front left.
Switch off brake fluid changer and remove from expansion tank.
Check brake fluid level. If necessary, top up/draw off to max. level.
Close expansion tank.