W203 brakes problem
The problem is hard brakes, but in some weird way. The brake pedal is hard only when pressed very quickly and strongly, then the brakes are almost not working. But when I press the pedal slowly or normally(not extremely quickly), the breaks are working perfectly, even when I increase the breaking power, still no problem, it can even activate the ABS on dry road. Therefore I believe that the booster is not dead.
I have new brake fluid + flush and bleed, new hoses, rotors and pads are OK, calipers cleaned and lubed.
Any ideas what could cause this symptom?
Thanks for any tip

Last edited by hrosik; Mar 13, 2022 at 05:22 PM. Reason: typo


