Mercedes-Benz Zetros 2020 Operating Instructions Manual page 114

Operation
112
Differential locks disengaged
g
Shift position and inter-axle lock display
1:
Shift position and cross-axle lock (rear
2;
axles) display
Shift position and cross-axle lock (front
3=
axles) display
Vehicles with one differential lock have a
switch; vehicles with several differential locks
have a control knob.
When the differential lock is engaged, the dis-
play shows £. When the differential lock is
disengaged, the display shows v. If the
£ dot in the display is flashing, the differ-
ential lock has not yet engaged/disengaged.
The conditions for engaging/disengaging have
not been fulfilled, e.g. due to differing wheel
rotational speeds. The differential lock is auto-
matically engaged as soon as all gearshift con-
ditions have been fulfilled.
Engage the differential locks to improve trac-
tion, e.g. on slippery road surfaces or off-road.
The individual differential locks can only be
engaged in sequence.
During an ABS braking regulation, the inter-
axle locks are disengaged and the dot flashes
in the display. Once the ABS braking regula-
tion is finished, the inter-axle locks are re-
engaged and the front axle is re-engaged.
Engaging
X
Stop the vehicle.
X
Turn the differential lock control knob to
position 1.
The inter-axle locks in the inter-axle/trans-
fer case are engaged.
X
Turn the differential lock control knob to
position 2.
or
X
Press the upper section of the i switch.
The cross-axle locks on the rear axles are
engaged.
X
Turn the differential lock control knob to
position 3.
The cross-axle locks on the front axles are
engaged.
The ! indicator lamp lights up.
i The respective differential lock is only
engaged when the display shows £.
Disengaging
i If possible, disengage the inter-axle differ-
ential lock on a loose surface and not on a
high-grip road surface. Otherwise, disengag-
ing the inter-axle lock can lead to a pressure
surge and a noticeable jerk in the cab.
Even different tyre diameters between the
front and rear axle can lead to a pressure
surge when disengaging the inter-axle lock.
Avoid a difference of more than 3% between
the tyre diameters of the front and rear axle.
X
Turn the differential lock switch to position
g.
or
X
Press the lower section of the i switch.
The differential lock is disengaged. The indi-
cator for the differential lock in the display
goes out.
Indicator lamp ! goes out.