Brakes gone low after Brake Fluid service E90

[3seriesman]

Hi All, my brakes have gone low 2 weeks after brake fluid service. Pedal is basically right to the floor. Any diagnosis.?

 

[rbmwiv]

Sounds like could be the master cylinder. Check the fluid and look at each caliper for fluid leaks. It’s possible whoever did that flush left a bleeder loose. That would cause the problem. Good luck


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[Nikhil]

Either the bleed screw was left slightly open or there's still air in the system. I suspect air tho. get someone with a powerbleeder to rebleed the system

 

[operator323]

Air in the braking system

 

[3seriesman]

Thanks for the replies. It was Bosch that did the brake flush. Gonna take it back to them