Originally Posted by Josh1a1h
I didn't realize this was a problem :/
I have this issue nearly every time, but my car still runs flawlessly and once the car is started, the pedal returns to normal.
What should be done? Is it urgent? I have no codes or problems.
The "hard brake pedal after the car sits overnight" is a common problem which most people just learn to live instead of fixing and the culprit is usually a leaking check valve. As long as vacuum is immediately restored once the car is started (brake pedal immediately feels normal) it's really nothing to worry about.
2010 535i M Sport - Platinum Gray/Dakota Black/Anthracite Bamboo
JB4 G5 ISO, BMS DCIs, ER Charge Pipe with Forge DVs, Proform Clear Bra, LUX H8 160 LED angel eyes