Adjusting the lumbar support
You can adjust the contour of the front seats so as to provide optimum support for your back.

Move adjustment lever 1 in the
direction
of the arrow until the desired backrest
contour is achieved.
See also:
Important safety notes
We recommend that all infants and children
be properly secured in an infant or child
restraint system at all times while the vehicle
is in motion.
The use of seat belts and infant and child
r ...
Setting the center air vents
Setting the center air vents
1 Center air vent, left
2 Center air vent, right
3 Center vent thumbwheel, right
4 Center vent thumbwheel, left
To open/close: turn
thumbwheels 3 and 4 up or dow ...
Vehicle data, GL 550
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.
...
