See also:

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. ...

Warranty
The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defective ...

Problems with the occupant classification system
Problem The indicator lamp illuminates and remains illuminated. The person on the front-passenger seat: has the weight of a typical adult has been determined by the system not to be a child. ...