See also:

Important notes
In order to prevent the vehicle's battery from discharging, the interior lighting functions are automatically deactivated after some time except for when the SmartKey is in position 2 in the i ...

Warning and indicator lamps
1 ABS 2 The lamp lights up briefly, but has no function. 3 Brakes (USA only) 4 ESP® 5 Distance warning signal On vehicles without DISTRONIC, the lamp lights up briefly but has no functi ...

Correct use of the seat belts
WARNING USE SEAT BELTS PROPERLY Seat belts can only work when used properly. Never wear seat belts in any other way than as described in this section, as that could result in serious i ...