Mercedes-Benz 2009 GL320 BlueTEC Operator's Manual page 190

Controls in detail
Driving systems
i Vehicles with ADS:
Depending on the ADS setting
( Y page 185), the vehicle will be lowered to
the highspeed level when traveling at
higher speeds. At speeds below 40 mph
(64 km/h) at the latest, it will be returned
to the highway level.
i The highspeed level is not available when
towing a trailer. For more information on
towing a trailer, see "Trailer
towing" ( Y page 310).
Raised level
Only select the raised level if appropriate for
the driving situation encountered. Otherwise
the fuel consumption may increase and/or
the handling characteristics of the vehicle
may be unfavorable.
i You can select the raised level at speeds
up to 40 mph (64 km/h). At higher speeds,
Level Selection Not
the message
n
Permitted appears in the multifunction
display.
X
Start the engine.
9 Ground clearance: 8.5 in (217 mm)
188
When indicator lamp is off:
2
X
Press switch 1.
Indicator lamp flashes. The vehicle
2
adjusts to the raised level.
The following message appears in the
multifunction display while the level is
being set:
i The message can be cleared by pressing
the è, ·, or
j k
the multifunction steering wheel.
When the raised level is reached, indicator
lamp comes on continuously and the
2
following message appears in the
multifunction display for 5 seconds:
Highway level
!
Keep in mind that on rough or uneven
roads, adjusting the vehicle to a lower level
may cause the vehicle underbody to come
in contact with the road and result in
damage to the vehicle underbody. Always
make sure the vehicle has sufficient ground
clearance before adjusting it to a lower
level.
button on
X
Start the engine.
When indicator lamp
X
Press switch 1.
Indicator lamp
adjusts to the highway level.
The following message appears in the
multifunction display while the level is
being set:
is on:
2
flashes. The vehicle
2