See also:

Vehicle data, GL 450
The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

SmartKey
0 To remove the SmartKey (shift the transmission to position P) 1 Power supply for some consumers, such as the windshield wipers 2 Ignition (power supply for all consumers) and drive position 3 T ...

Restricting the shift range
X Press the selector lever to the left towards D–. The automatic transmission shifts down one gear and restricts the shift range to the relevant gear. If the engine exceeds the maximum engine s ...