Bmw4u

I did the stupidity of suck too much brake fluid from the master cylinder, when flushing the lines,
How do i bleed the master cylinder, is any bleeding screw?
E60 525 i 2007

kd7iwp

You have to bleed the whole brake system. https://www.pelicanparts.com/techart...e_Bleeding.htm

scottalexander

Step one:

Buy a Motive brake bleed unit.

You will be bleeding your brakes every year and will need the Motive brake bleeder.

DanL

Yes, you'll have to bleed every corner of the car in the proper sequence and pray that there's no air trapped in the ABS/DSC unit. If there is air trapped in the unit, you'll need either INPA or ISTA to activate the DSC bleed procedure otherwise your brakes will be spongy no mater how many times you attempt to mechanically bleed them.

Bmw4u

Thank you all , friends for the help