See also:

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Adding DEF
WARNING Make sure • DEF does not come into contact with skin, eyes, or clothing • to keep DEF out of the reach of children If you and/or others have come into contact with DEF: • If DEF ...

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 Assistanc ...