NHTSA recall 77V055000
Service brakes, hydraulic › Power assist
Mercedes Benz L1113 and 1 more
The defect
An air leak could develop through the piston shaft seal ring which seals the inside of the brake booster from the atmosphere. This could result in a reduction in brake booster assist, necessitating increased brake pedal pressure.
The remedy
Dealer will replace the defective seal with an improved version at no charge to owner.