BMW MINI Brake Master Cylinder Replacement !!!

[@vladtymchak2021]

Why you replaced it?

[@MrAutoFixer]

Because it had a sinking pedal, which gives poor brakes and is dangerous to drive with 👍

[@vladtymchak2021]

@@MrAutoFixer My calipers won’t release, may it be the master cylinder? I found some leaks under reservoir but its strange, rear wheels are sticking a lot, I already rebuilt a caliper without any results.

[@MrAutoFixer]

If all the calipers are stuck on them it’s more likely to be the ABS pump faulting and not letting the pressure off. Most common fault would be the calipers being siezed or the sliders.

[@MrAutoFixer]

@@vladtymchak2021 if it’s the rears it will be the handbrake cables and a good test it to pop the cables out of their holders underneath and wiggle them to free off the cable and the caliper will release and when you put the handbrake cable back in its holders the caliper will go tight again. Seen it happen a lot!

[@vladtymchak2021]

@@MrAutoFixer I changed all 4 rotors and pads, bleed well, all calipers are working well even with hand brake screw lose (rear), double checked holders, the pressure in the brake system won’t release for some reason, it may be abs? Actually calipers won’t go back to optimal position to freely turning the wheel, it’s like master cylinder sip air somewhere without taking pushed fluid back.