Service Brakes Problems of Mercedes Benz R500

The contact owns a 2006 mercedes-benz R500. The contact received notification of NHTSA campaign number: 22v315000 (service brakes, hydraulic). The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The dealer was made aware of the failure and informed the contact that a technician would arrive to his residence to inspect the brake booster and, if necessary, replace the brake booster. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 117,000.

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At complete stop at stop light with brake fully depressed the tachometer showed several repeated increases in rpm from 600-800 causing the car to rock then the car accelerated to 2200 rpm activating the antilock braking system. This has recurred on an intermittent basis from the 6-1100. This is in conjunction with depression of the accelerator at other times with no response from the engine. Mercedes looked at the vehicle and I accompanied a test drive and all problems occurred from no acceleration several seconds to the 6-800-rpm acceleration at full stop with brakes depressed. They did not do any repair, no parts replaced the car is as is still on the road.