See also:

New dimensions in energy efficiency
The performance of the Mercedes-Benz M-Class engines becomes particularly apparent when looking at the reduced energy requirements coupled with a marked increase in power output per litre for the ...

Manual interior lighting control
To switch the front interior lighting on/off: press the c button. To switch the rear interior lighting on/off: press the u button. To switch the reading lamps on/off: press the p button. ...

General notes
If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged. - Check the battery in ...