Mercedes-Benz M-Class Owners Manual

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Operating the on-board computer
The on-board computer is activated as soon as you turn the SmartKey to position 2 in the ignition lock. You can control the multifunction display and the settings in the on-board computer using ...

Using the SmartKey
– Turn the SmartKey to position 0 in the ignition lock and remove it. The immobilizer is activated. If you turn off the engine with the SmartKey and then remove it from the ignition lock ...

Important safety notes
In order for the battery to achieve the maximum possible service life, it must always be sufficiently charged. Have the battery checked regularly at a qualified specialist workshop, such a ...