See also:

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 ...

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...

Radiator
Vehicles with a diesel engine: do not cover the radiator, for example with a winter front or bug cover. Otherwise, the readings of the on-board-diagnostic system may be inaccurate. Some of th ...