Diagnostic socket
If you connect devices to the diagnostic socket, the operation of the vehicle systems may be impaired. This may compromise the operating safety of your vehicle while driving. There is a risk of an accident.
Do not connect devices to the diagnostic socket.
WARNINGIf devices are not secured or cables of devices connected to the diagnostic socket hang loose, they may obstruct pedal travel. Devices or cables may become trapped under the pedals during hard braking or sudden maneuvers. Pedal operation may then be impaired. There is a risk of an accident.
Do not secure devices or cables to the floor on the driver's side.
The starter battery can discharge when the engine is switched off and devices connected to the diagnostic socket are in use.The diagnostic socket is intended for connecting diagnostic equipment by a qualified workshop.
If you connect devices to the diagnostic socket, the emissions control data may be reset. The vehicle may then fail to meet the requirements of the next emissions test as part of the vehicle inspection.
Test yourself
A quick Mercedes-Benz B-Class quiz: every answer comes with an explanation and a link to the manual page.