See also:

Rejects or ends a call
Press the button on the steering wheel. If you are not in the Telephone menu, you can still reject or end a call. ...

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. ...

More operating comfort, better connectivity: new-generation telematics
The new Mercedes-Benz C-Class also sees the debut of a new telematics generation which will also be gradually introduced in other model series. Major new features include greater operating conveni ...