Page 425 of 561
424 Practical hintsWhat to do if …Display message
Possible
cause/consequence
Possible solution
Front passenger airbag
enabled
see Operator’s Manual
Monitor the 59indicator lamp on the center console (
page 89) and
the multifunction display in the instrument cluster (
page 24) for the following:
With the seat unoccupied and the ignition turned on,
the 59indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 85) has deactivated the air
bag.
the message
Front passenger airbag enabled see Operator’s Manual
or the
message
Front passenger airbag disabled see Operator’s Manual
should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at last 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again.
Depending on the front passenger classification sensed by the OCS (
page 85),
the 59indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the sys-
tem checked as soon as possible by an authorized Mercedes-Benz Light Truck Cen-
ter.
Warning!
G
If the 59indicator lamp re-
mains out even after performing the above
corrective steps, do not have any children
12 years old and under and other small
individuals use the front passenger seat
until the system has been repaired.
Page 427 of 561
426 Practical hintsWhat to do if …Display message
Possible
cause/consequence
Possible solution
Front passenger airbag
disabled
see Operator’s Manual
Monitor the 59indicator lamp on the center console (
page 89) and
the multifunction display in the instrument cluster (
page 24) for the following:
With the seat unoccupied and the ignition turned on,
the 59indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 85) has deactivated the air
bag.
the message
Front passenger airbag enabled see Operator’s Manual
or the
message
Front passenger airbag disabled see Operator’s Manual
should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at last 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again.
Depending on the front passenger classification sensed by the OCS (
page 85),
the 59indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the sys-
tem checked as soon as possible by an authorized Mercedes-Benz Light Truck Cen-
ter.
Warning!
G
If the 59indicator lamp re-
mains out even after performing the above
corrective steps, do not have any children
12 years old and under and other small
individuals use the front passenger seat
until the system has been repaired.
Page 429 of 561
428 Practical hintsWhat to do if …Display message
Possible cause/consequence
Possible solution
Tire pressure displayed
only after driving
a few minutes
Vehicles with Advanced TPMS*:
The tire inflation pressure is being checked.
Drive the vehicle for a few minutes.
Tire pressure monitor
inoperative
The TPMS or Advanced TPMS* is
malfunctioning.
Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Tire pressure monitor
inoperative
No wheel sensors
There are wheels without wheel sensors
mounted (e.g. winter tires).
Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Tire pressure monitor
temporarily
unavailable
The TPMS or Advanced TPMS* is unable to
monitor the tire pressure due to
a nearby radio interference source
excessive wheel sensor temperatures
As soon as the causes for the malfunction are no
longer present, the TPMS or Advanced TPMS* auto-
matically becomes active again after a few minutes
of driving.
Tire pressure monitor
Wheel sensor missing
One or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without wheel sensors
mounted (e.g. spare tire).
Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Vehicles with Advanced TPMS*:
The tire pressure for the respective tire is shown in
the multifunction display.
Page 436 of 561
435 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The poly-V-belt could be broken.
Stop the vehicle in a safe location or as soon
as it is safe to do so and immediately turn off
the engine.
Check the poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise the
engine will overheat due to an inoperative wa-
ter pump which may result in damage to the
engine. Notify an authorized Mercedes-Benz
Light Truck Center.
If it is intact:
Do not continue to drive the vehicle with this
message displayed. Doing so could result in
serious engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Observe the coolant temperature in the
multifunction display (
page 168).
Drive immediately to the nearest authorized
Mercedes-Benz Light Truck Center.
Page 437 of 561
436 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Visit workshop
The cooling fan for the coolant is
malfunctioning.
Observe the coolant temperature in the
multifunction display (
page 168).
Have the fan replaced as soon as possi-
ble.
G
Display malfunction
Visit workshop
The instrument cluster display is
malfunctioning.
Continue driving with added caution.
Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
The displays for several systems
have malfunctioned. Some sys-
tems themselves may also have
malfunctioned.
Have the electronic systems checked by
an authorized Mercedes-Benz Light Truck
Center.
±
Display malfunction
Visit workshop
Certain electronic systems are
unable to relay information to
the control system. The follow-
ing systems may have failed:
Coolant temperature display
Tachometer
Cruise control display
Have the electronic systems checked by
an authorized Mercedes-Benz Light Truck
Center.
c
Door open
You are attempting to drive with
one or more doors open.
Close the doors.
Page 449 of 561
448 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Rectify
tire pressure
The pressure is too low in one or more
tires.
Check and correct tire inflation
pressure as required.
Tire pressure
Caution: Tire defect
One or more tires are deflating.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
If necessary, change the wheel.
Caution: Tire defect
Vehicles with Advanced TPMS*:
One or more tires are deflating.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
If necessary, change the wheel.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 450 of 561
449 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Tire pressure
Check tires
The tire pressure in one or more tires is
already below the minimum value.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
Check and adjust tire inflation
pressure as required.
If necessary, change the wheel.
Check tires
Vehicles with Advanced TPMS*:
The tire pressure in one or more tires is
already below the minimum value.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
Check and adjust tire inflation
pressure as required.
If necessary, change the wheel.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 452 of 561
451 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
L
Malfunction
Drive to workshop
One or more main functions of the
Tele Aid* system are malfunctioning.
Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
Battery
Drive to workshop
The emergency power battery for the
Tele Aid* system is malfunctioning. If the
vehicle battery is also malfunctioning or
drained, Tele Aid* will not be operational.
Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
t
Function
unavailable
This display appears if buttont or
son the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
W
Washer fluid
Check level
The fluid level has dropped to
about
1/3of total reservoir capacity.
Add washer fluid (
page 352).
