See also:

High-Tech Features
Distronic Plus takes adaptive cruise control — of which Mercedes was a pioneer — to another level. Adaptive cruise uses a front-mounted radar device to maintain the following distance from the car ...

Mercedes-Benz M-Class Owners Manual
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Overhead control panel
1 Switches the lefthand reading lamp on/off 2 Switches the rear interior lighting on/off 3 Switches the automatic interior lighting control on/off 4 Switches the front interior lighti ...