See also:

Switching on/off manually
Press the button. ...

After refilling diesel exhaust fluid
Incorrect fluid Incorrect fluids After refilling with the incorrect fluid, e.g., antifreeze for windshield wiper fluid, do not start the engine because this could result in a fire hazard. ...

Socket for OBD Onboard Diagnosis
Position There is an OBD socket on the driver's side for checking the primary components in the vehicle emissions. Emissions ▷ The warning lamp lights up: Emissions are deteriorating ...