What is a Hydraulic Brake Booster? Hydraulic boosters are most common on diesel engine vehicles, as they do not produce vacuum. This takes pressurized hydraulic fluid from the hydraulic steering ...

The vehicles feature faulty hydraulic brake boosters that could cause failures of the ... 20 models with brake booster fault. ... G14), M3 (G80) and M4 (G82) lines – a total of ...