Mercedes-Benz GL450 Operator's Manual page 205

Gl-class
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Controls in detail
Differential locks*
AUTO mode
The AUTO mode is adequate for most driv-
ing situations since the center differential
is locked and released as required.
i
At speeds up to 19 mph (30 km/h), it is
possible to manually lock the differential locks
for driving on rough terrain.
Start the engine ( page 42).
The center differential locks is in AUTO
mode. The indicator lamp on the
adjustment ring 1 above
symbol U 2 is on.
204
Center and rear axle differential locks
Warning!
Never drive on a paved surface with the
center and rear axle differential locks
manually engaged. Ability to steer the
vehicle is greatly reduced when the differen-
tial locks are manually engaged, increasing
the risk of an accident.
For safety reasons, the locks are automati-
cally released at a vehicle speed above
31 mph (50 km/h). Nevertheless, you
should only manually lock the differential if
absolutely necessary because engaged
locks will restrict the vehicle drive train
while cornering and cause the vehicle to
chatter. This could cause you to lose control
of the vehicle and cause an accident.
!
The differential locks must not be engaged
manually when towing the vehicle or spinning the
wheels.
The differential locks should only be
engaged manually if traction is insufficient
G
in AUTO mode.
The differential locks can be engaged in
the sequence 3, 4 ( page 203) up to a
speed of 19 mph (30 km/h).
Engaging differential locks:
for off-road driving
for driving through water
when driving on deep snow and icy or
fouled surfaces

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