On certain electric vehicles, the drive gear in the rear axle drivetrain may not have been properly welded. As a result, the weld for the drive gear could break and cause a loss of power to the wheels. Additionally, the vehicle could move when it's parked and the parking brake isn't applied.
A loss of power to the wheels or a parked vehicle that moves suddenly could create the risk of an injury and/or a crash.
Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the rear axle electric drivetrain.