The official notice
Defect
On certain vehicles, the wiring harness for the telematics control unit could get stuck between the brake light switch and the brake pedal. If this happens, the brake lights could remain on. Additionally, the vehicle could be started and could be shifted into gear without the need to press the brake pedal. It is also possible that if a driver exits the vehicle through the cargo compartment, the transmission may not shift to Park automatically. This could result in unintended vehicle movement.
Safety Risk
A vehicle that moves unexpectedly could create the risk of a crash. Brake lights that do not work properly could result in road users being confused of the driver's intentions, and increase the risk of a crash.
Remedy
Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to install an additional cable tie on the wiring harness for the telematics control unit.