See also:

Roadside Assistance button
  Press and hold Roadside Assistance button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in Roadside Assistance but ...

Additives
Only use DEF in accordance with ISO 22241. Do not use additives with DEF and do not dilute DEF with water. This may destroy the BlueTEC exhaust gas aftertreatment system. ...

Important safety notes
Blind Spot Assist uses a radar sensor system to monitor the areas on both sides of your vehicle. It begins to work at speeds of approximately 20 mph (30 km/h). A warning display in the exterior mi ...