Brake servo problems

[mottofreee]

This morning I left the Smart perfectly functional and this evening, after driving 100m, the brake pedal became stiff, I was left without power brake.
The car brakes but the pedal is very difficult to operate. I also felt a bit of ABS when I braked hard. For now I have concluded that the servo part is not working - tomorrow at the light I will check the vacuum pump and the vacuum pipe. I will also put MB Star on and see what it says.

[heinkeljb]

Also check the reluctor rings.

[mottofreee]

I checked and cleaned the reluctors this spring, but some time has passed since then and the reluctors were heavily rusted. I will check and if it is necessary to change (they are ready).

I will also change the brake fluid.

[mottofreee]

MB Star said that everything is fine.
I found the vacuum pump coupling broken.
Problem solved, lack of vacuum.
Now I'm going to replace the part and the brake fluid.

[heinkeljb]

Well done. Glad you found the problem.