
86 Trip computer
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
To calibrate the compass:
If the vehicle was exposed to a significant magnetic 
zone, such as high voltage power lines, the compass 
may have to be calibrated.
Calibration of the compass should be done in an area 
free of steel superstructures and power lines. All 
electrical consumers (e.g. exterior lamps, climate 
control, etc.) should be switched off, doors and liftgate 
closed. Do not open or close the roof. An open door or 
liftgate triggers the display “–––”.
1. Start and run the engine.
2. Press MODE key repeatedly until the compass 
display appears in the trip computer display.
3. Press RESET key to select the compass zone display.
4. Press RESET repeatedly until the correct zone, as 
determined from the zone map (see page 85), is 
shown in the display.
5. Press MODE key, “CAL–” appears in the display.
6. Press and hold RESET for a minimum of 2 seconds.7. Without interruption drive two or more full circles 
at a speed between 3 mph (5 km / h) and 7 mph 
(10 km / h) during which the message “CAL” is 
replaced with a compass bearing (e.g. N, SW etc.), 
immediately followed by three full circles at the 
same speed, with only the rear window defroster 
switched on. The defroster can be switched off 
again. The calibration of the compass is now 
complete.
•Stop watch  – 
Press RESET key to start the count. Press again to 
stop the count. Press and hold RESET key to reset 
sto p watch.
•Average fuel consumption –
 Press RESET key to delete present reading.
•Language –
Press RESET key to set the language used in the 
display. 

156 Tele Aid
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Important!
If the indicator lamps do not start flashing after 
pressing one of the buttons or remain illuminated (in 
red) at any time, the Tele Aid system has detected a fault 
or the service is not currently active, and may not 
initiate a call. Visit your Mercedes-Benz Light Truck 
Center and have the system checked or contact the 
Response Center at 1-800-756-9018 (in the USA) or 
1-888-923-8367 (in Canada) as soon as possible.Upgrade Signals
Tele Aid system processes calls using the following 
priority.
•Automatic emergency – First priority
•Manual emergency – Second priority
•Roadside assistance – Third priority
•Information – Fourth priority
Should a higher priority call be initiated while you are 
connected, an upgrade (alternating) tone will be heard, 
and the appropriate indicator lamp will flash. If certain 
information such as vehicle identification number or 
client information is not available, the operator may 
need to retransmit. During this time you will hear a 
chirp and voice contact will be interrupted. Voice 
contact will resume once the retransmission is 
completed. Once a call is concluded, a chirp will be 
heard and the appropriate indicator lamp will stop 
flashing. The MCS system operation will resume. 

164 Starting and turning off the engine
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Starting and turning off the engine
Before starting
Ensure that parking brake is engaged and that selector 
lever is in position “P” or “N”. Turn key in steering lock 
to position 2. The charge indicator lamp should come on.
Starting
Do not depress accelerator.
Briefly turn key in steering lock clockwise to the stop 
and release. The starter will engage until the engine is 
running.
If engine will not run, and the starting procedure stops, 
turn key completely to the left and repeat starting the 
engine.
After several unsuccessful attempts, have the system 
checked at the nearest authorized Mercedes-Benz Light 
Truck Center.
A starting procedure can be interrupted by turning the 
key to steering lock position 0.Important!
Due to the installed starter non-repeat feature, the key 
must be turned completely to the left before attempting 
to start the engine again.
In areas where temperatures frequently drop below -4°F 
(-20°C) we recommend that an engine block heater be 
installed. Your authorized Mercedes-Benz Light Truck 
Center will advise you on this subject.
Note:
In case the engine cannot be started and the 
messagesÁ and î are shown in the odometer 
display field, the system is not operational. Contact an 
authorized Mercedes-Benz Light Truck Center or call 
1-800-FOR-MERCedes (in the USA), or 1-800-387-0100 
(in Canada).
Turning off
Turn the key in the steering lock to position 0 to stop the 
engine.
The key can only be removed with the selector lever in 
position “P”. 

166 Automatic transmission
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Driving
The selector lever is automatically locked while in 
position “P”. To move the selector lever out of 
position “P”, the service brake pedal must be firmly 
depressed before the shift lock will release.
Shift selector lever to the desired position only when the 
engine is idling normally and the service brake is 
applied. Do not release the brake until ready to drive. 
The vehicle may otherwise start creeping when the 
selector lever is in drive or reverse position.Important!
After selecting any driving position from “N” or “P”, 
wait a moment to allow the gear to fully engage before 
accelerating, especially when the engine is cold.
Accelerator position
Partial throttle = early upshifting = normal acceleration
Full throttle = later upshifting = rapid acceleration
Kickdown (depressing the accelerator beyond full 
throttle) = downshifting to a lower gear = maximum 
acceleration. Once the desired speed is attained, ease up 
on the accelerator – the transmission shifts up again.
Stopping
For brief stops, e.g. at traffic lights, leave the 
transmission in gear and hold vehicle with the service 
brake.
For longer stops with the engine idling, shift into “N” 
or “P” and hold the vehicle with the service brake.
When stopping the vehicle on an uphill gradient, do not 
hold it with the accelerator, use the brake. This avoids 
unnecessary transmission heat build up.
Wa r n i n g !
It is dangerous to shift the selector lever out of “P” 
or “N” if the engine speed is higher than idle speed. 
If your foot is not firmly on the brake pedal, the 
vehicle could accelerate quickly forward or in 
reverse. You could lose control of the vehicle and 
hit someone or something. Only shift into gear 
when the engine is idling normally and when your 
right foot is firmly on the brake pedal. 

187 Driving instructions
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Driving through water
120 in (50 cm)
Before driving through water, determine its depth. It 
should not be deeper than approximately 
20 inches (50 cm).Switch to LOW RANGE mode before driving through 
water. 
Switch off the exterior lamps as well as the climate 
control.
Enter the water only at a shallow spot. Never take a 
running start. Drive slowly, avoiding a bow wave. 
Do not stop vehicle immersed in water, and do not shut 
off the engine.
To dry the brakes, apply pressure to the brake pedal 
several times after leaving the water. 

194 Driving instructions
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Tow in g  a  t r ai le r
There are many different laws, including speed limit 
restrictions, having to do with trailer towing. Make sure 
t ha t your rig will be lega l, not only for w here you reside, 
but also for where you will be driving. A good source for 
this information can be the police or local authorities.
Before you start driving with the trailer, check the 
trailer hitch, break-away switch, safety chains, electrical 
connections, lighting and tires. Also adjust the mirrors 
to permit unobstructed view beyond rear of trailer.
If the trailer has electric brakes, start your vehicle and 
trailer moving slowly, and then apply only the trailer 
brake controller by hand to be sure the brakes are 
working properly.
When towing a trailer, check occasionally to be sure that 
the load is secure, and that lighting and trailer brakes 
(if so equipped) are functioning properly. 
Always secure items in the trailer to prevent load shifts 
while driving.
Take into consideration that when towing a trailer, the 
handling characteristics are different and less stable 
from those when operating the vehicle without a trailer. 
It is important to avoid sudden maneuvers.The vehicle and trailer combination is heavier, and 
therefore is limited in acceleration and climbing ability, 
and requires longer stopping distances. It is more prone 
to reacting to side wind gusts, and requires more 
sensitive steering input.
In order to gain skill and an understanding of the 
vehicle’s behavior, you should practice turning, 
stopping and backing up in an area which is free from 
traffic.
If possible, do not brake abruptly, but rather engage the 
brake slightly at first to permit the trailer to activate its 
brake. Then increase the braking force.
Caution!
If the trailer should begin to sway, reduce the vehicle’s 
speed and use the brake controller by hand to straighten 
out the vehicle and trailer. In no case should you 
attempt to straighten out the tow vehicle and trailer by 
increasing the speed or oversteering and stepping on 
the brakes.
If the transmission hunts between gears on inclines, 
manually shift to a lower gear (select “4”, “3”, “2” 
or “1”). A lower gear and reduction of speed reduces the 
chance of engine overloading and / or overheating. 

224 Malfunction and indicator lamps
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Low engine oil level warning lamp
With the key in steering lock position 2, the 
oil level warning lamp comes on and should 
go out when the engine is running.
If the warning lamp does not go out after starting the 
engine, or comes on with the engine running and at 
operating temperature, the engine oil level has dropped 
to approximately the minimum mark on the dipstick.
When this occurs, the warning lamp will first come on 
intermittently and then stay on if the oil level drops 
further.
If no oil leaks are noted, continue to drive to the nearest 
service station where the engine oil should be topped to 
the “full” mark on the dipstick with an approved oil.
The low engine oil level warning light should not be 
ignored. Extended driving with the light illuminated 
could result in serious engine damage that is not 
covered by the Mercedes-Benz Limited Warranty.
In addition to the warning lamp, the engine oil level 
should be periodically checked with the dipstick or via 
the oil level indicator in the odometer display field, for 
example during a fuel stop, or before a long trip (see 
engine oil level indicator on page 89 and checking 
engine oil on page 233).Low engine coolant level warning
When the coolant level warning lamp comes 
on while driving, then the coolant level has 
dropped below the required level, or the 
coolant temperature is in the red zone. If no leaks are 
noticeable and the engine temperature does not 
increase, continue to drive to the nearest service station 
and have coolant added to the coolant system, see 
page 234. If the engine temperature reaches the red 
zone, move vehicle to an area which is in a safe distance 
from the roadway and turn off the engine. Also see 
coolant temperature gauge on page 81.
The low engine coolant level warning should not be 
ignored. Extended driving with the symbol displayed 
may cause serious engine damage not covered by the 
Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have 
the cooling system checked at your authorized 
Mercedes-Benz Light Truck Center as soon as possible.
Notes:
Do not drive without coolant in the cooling system. The 
engine will overheat causing major engine damage.
Monitor the coolant temperature gauge while driving. 

305 Index
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car careIndex Headlamp cleaning system  ............................................ 94
Headlights ......................................................................... 90
Heated seats  ..................................................................... 44
Hood ................................................................................. 231
Hooks ............................................................................... 133
IIdentification labels .......................................................285
Illuminated vanity mirrors ............................................113
Indicator lamps in the instrument cluster ................... 78
Infant and child restraint system
Installation ................................................................... 67
Infant and child restraint systems  ................................ 65
Inflating the space-saver tire  .......................................249
Information call
See Tele Aid  ............................................................... 148
Instrument cluster  ........................................................... 76
Activating display  ....................................................... 80
Display illumination ................................................... 80
Indicator lamps  ........................................................... 78
Malfunction and indicator lamps  ........................... 218
Instrument lamps  ............................................................ 80Instruments and controls  ............................................... 18
Interior
General notes  ............................................................. 114
Interior lighting  .............................................................. 110
JJump starting  ................................................................. 253KKeys, vehicle  .....................................................................24LLamps, exterior .............................................................. 260
Adjusting headlamp aim  ......................................... 268
Auxiliary fog lamp  ............................................. 92, 264
Fog lamps  .....................................................................93
Headlamp assembly ......................................... 261, 262
Headlamps .................................90, 261, 262, 268, 280
High mounted stop lamp ......................................... 267
License plate lamps  ................................................. 267
Low and high beam ............................................90, 263