The brake booster failed while driving and I almost got in an accident. The brakes did not fully work and started pulsating almost like if the antilock system engaged. The brake booster was leaking air around the piston that attaches to the brake pedal. You could hear the air leaking when the pedal was pressed. It has been repaired at he MB dealer for about $2300. There were no indications of a malfunction, no lights or errors showed up.

- Atlanta, GA, USA

I keep experiencing the "pre-safe limited" warning. The car break starts fading, and the check engine light remained on the working conditions. This situation is so unsafe because the car becomes heavy and the steering turns hard to maneuver.

- New York, NY, USA