Overview
The on-board computer is activated as soon as you turn the SmartKey to position 1 in the ignition lock.
You can control the multifunction display and the settings in the on-board computer using the buttons on the multifunction steering wheel.

1 Multifunction display
2 To switch on the Voice Control System; see the separate operating
instructions
3 Right control panel
4 Left control panel
5 Back button
See also:
Safety & Reliability
As of this writing, the Insurance Institute for Highway Safety has not yet
crash-tested the GL-Class. Eight standard airbags include three-row side curtain
airbags and seat-mounted side-impact air ...
Low-beam headlamps (halogen
headlamps)
- Remove the cover in the front wheel arch.
- Turn housing cover 1 counter-clockwise
and pull it out.
- Turn bulb holder 2 counter-clockwise and
pull it out.
- Take the bulb out of bulb holde ...
Additives
Only use DEF in accordance with ISO
22241. Do not use additives with DEF and
do not dilute DEF with water. This may
destroy the BlueTEC exhaust gas
aftertreatment system. ...
