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232 Driving mode
If the status display v flashes, briefly
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change the speed, e.g. pull away, brake or
change the direction of travel.
Do not continue driving, otherwise the differ‐
ential may be damaged.
If the yellow status display v does not go
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out when the interaxle differential locks are
disengaged, stop the vehicle and reverse for a
short distance.
When the differential locks are engaged and the
vehicle is driven faster than 50 km/h, the current
engagement position of the differential locks is
shown again in the display.
Deactivate the differential locks or drive
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slower than 50 km/h.
Engaging/disengaging front axle transfer
case
Engaging the front axle
Differential lock control knob (example)
To improve traction, the front axle can be
engaged,e.g. on slippery road surfaces or off-
road.
The status of the selectable front axle is dis‐
played in the
Status
menu,
the multimedia system.
When the front axle is engaged, the associated
status display v lights up yellow. When the
front axle is not engaged, the display shows the
associated status display v in grey. If the sta‐
tus display v is flashing, the front axle is not
yet engaged/disengaged. The engagement/
disengagement conditions have not been met,
e.g. different wheel speeds. The front axle is
engaged/disengaged as soon as all shift condi‐
tions have been met. When the front axle is
engaged, the interaxle differential lock of the
transfer case is engaged. When the front axle is
engaged, the shift range for upshifts is automati‐
cally limited for vehicles with an automated man‐
ual transmission.
During ABS braking regulation, the interaxle dif‐
ferential locks are deactivated, the front axle is
disengaged and the display flashes. When ABS
braking regulation ceases, the interaxle differen‐
tial locks and the front axle are engaged again.
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Disengaging the front axle
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Engaging/disengaging transfer case off-road
gear
Axles
menu item of
Stop the vehicle.
Turn the switch of the differential locks to
position 1.
The front axle and the rear axles are driven
and the interaxle differential locks are
engaged. There is no rotational speed com‐
pensation between the front axle and the rear
axles.
Stop the vehicle.
Turn the switch of the differential locks to
position g.
Only the rear axles are driven. The interaxle
differential locks are deactivated.
The 2 and 3 positions are the functions of
the differential lock (
page 229).
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* NOTE Damage to the retarder due driving
fast in the off-road gear
Driving at excessive speed with the off-road
gear selected can damage the retarder.
Do not exceed a speed of 50 km/h.
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