Lumbar Adjustment

To adjust the lumbar support: Press and hold the front or rear of the control to increase or decrease lumbar support. Press and hold the top or bottom of the control to raise or lower the ...

Power Reclining Seatbacks

To adjust the seatback: Tilt the top of the control rearward to recline. Tilt the top of the control forward to raise. WARNING Sitting in a reclined position when the vehicle is in mot ...

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. ...

Adjusting the backrest angle (2nd rowof seats)
WARNING   The seat belt only offers its intended protection when the seat backrest is in a nearly vertical position and the occupant is sitting upright. The seat backrest and seat belt ...

Airbag System Check
The airbag system does not need regularly scheduled maintenance or replacement. Make sure the airbag readiness light is working. See Airbag Readiness Light  . Notice: If an airbag covering is ...