Page 219 of 342

216 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Notes:
If the engine does not brake the vehicle sufficiently
while driving on a downgrade, the speed you set on the
cruise control may be exceeded. In this case the
automatic transmission shifts down (max. to 3rd gear)
to maintain the set cruise control speed by using the
engine’s braking power.
As soon as the grade eases, the automatic transmission
shifts up again dependent on the selector lever position.
Nevertheless, in some cases you may have to step on the
brake pedal to slow down. In this case the cruise control
is switched off.
Use the lever to resume the previously set speed.Transmission in LOW RANGE mode
The cruise control should not be activated during off-
road driving in the LOW RANGE mode. Doing so could
reduce driving comfort.
Trailer operation
When towing a trailer, do not allow engine speed to drop
too low on inclines. Select a lower range (“3”, “2” or “1”)
in time, depending on the degree of the incline. This is
also valid with cruise control activated.
At extreme inclines switch to LOW RANGE mode, see
page 227.
Note:
For detailed information see trailer towing on page 209.
Page 223 of 342

220 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
If the charging voltage falls below 10 volts, the
malfunction indicator lamp comes on and the ABS is
switched off. When the voltage is above this value again,
the malfunction indicator lamp should go out and the
ABS is operational.
If the ABS malfunction indicator lamp stays illuminated,
have the system checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.Notes:
To alert following vehicles to slippery road conditions
you discover, operate your hazard warning flashers as
appropriate.
Operating the vehicle on a single axle dynamometer
should only be done for briefly testing the brakes. To do
so, move selector lever to position “N”. The engine must
be shut off (key in steering lock position 0 or 1).
LOW RANGE – ABS
During off-road driving a special low range system for
the antilock brake system (ABS) is operational with
transmission in LOW RANGE mode, see page 229.
When applying the service brakes at speeds below
approximately 18 mph (30 km / h), the front wheels are
locked cyclically to shorten the braking distance (dig in
effect). This affects steering the vehicle.
Wa r n i n g !
ABS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase
braking or steering efficiency beyond that afforded
by the condition of the vehicle brakes and tires or
the traction afforded. The ABS cannot prevent
accidents, including those resulting from excessive
speed in turns, following another vehicle too
closely, or aquaplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of an ABS equipped vehicle must never
be exploited in a reckless or dangerous manner
which could jeopardize the user’s safety or the
safety of others.
Page 231 of 342

228 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Switching on:
1. Stop the vehicle.
2. Move transmission selector lever to position “N”.
3. Push top end of switch. The LOW RANGE indicator
lamp in the instrument cluster blinks three times
during the changeover.
Once the changeover is complete, the indicator lamp in
the instrument cluster lights up continuously.
Note:
If the indicator lamp blinks fast, one or more switching
conditions were not observed, or the LOW RANGE mode
is defective.Switching off:
1. S to p t h e ve h i c l e .
2. Move transmission selector lever to position “N”.
3. Push top end of switch. The LOW RANGE indicator
lamp in the instrument cluster three times during
the changeover.
Once the changeover is complete, the indicator lamp in
the instrument cluster goes out. Use the gear selector
lever normally.
Note:
If the indicator lamp blinks fast, one or more switching
conditions were not observed, or the LOW RANGE mode
is defective.
Page 252 of 342

249 Contents - Practical hints
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................250
Fuses ................................................250
Electrical outlet ..............................252
Stowing items in the vehicle ........252
Hood .................................................253
Checking engine oil level .............255
Automatic transmission
fluid level ...................................256
Engine oil consumption ................256
Coolant level ...................................256
Adding coolant ...........................257
Windshield washer/headlamp
cleaning system .........................258
Windshield and headlamp
washer fluid mixing ratio .........259Ve h i c l e j a c k ,
wheel bolt wrench and
screwdriver ............................... 259
Air pump ......................................... 261
Wheels ............................................ 262
Tire replacement ....................... 262
Rotating wheels ......................... 263
Spare wheel .................................... 264
Changing wheels ........................... 267
Tire inflation pressure ................. 272
Battery ............................................. 273
Jump starting ................................. 275
Towing the vehicle ........................ 277
Transmission selector lever,
manually unlocking .................. 281
Stranded vehicle ............................ 281Exterior lamps ................................282
Headlamp assembly ...................283
Taillamp assemblies ..................287
Adjusting headlamp aim ...............290
Remote control battery
replacement ...............................292
Synchronizing
remote control ............................293
Emergency operation of
sliding/pop-up roof ...................294
Manual release for
fuel filler flap .............................295
Replacing wiper blades .................295
Roof rack .........................................296
Page 256 of 342
253 Engine compartment
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Hood
To o pen :
To unlock the hood, pull release lever (1) under the
driver’s side of the instrument panel. At the same time a
handle (2) will extend out of the radiator grill (it may be
necessary to lift the hood up slightly).
Caution!
To avoid damage to the windshield wipers or hood, open
the hood only with wipers in the parked position.Pull handle (2) to its stop out of radiator grill and open
hood (do not pull up on handle).
To c l o s e :
Lower hood and let it drop into lock from a height of
approximately 1 ft. (30 cm).
To avoid hood damage, please make sure that hood is
fully closed. If not, repeat closing procedure. Do not
push down on hood to attempt to fully close it.
Page 269 of 342
266 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
2. Loosen screw (2) using wrench supplied with
vehicle tools, see page 259. The screw (2) remains
in the holder.
3. Lift spare wheel carrier slightly and push lever (3)
to the right using screwdriver supplied with vehicle
tools, swing spare wheel carrier down and pull it out
from under the bumper.
4. Remove space-saver spare wheel.
5. Turn the bayonet lock clockwise to the endstop and
take off. Remove the cover and spare wheel.
Note:
Store bayonet lock and spare wheel cover in cargo area.
P40.10-2440-26
Page 271 of 342

268 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Move vehicle to a level area which is a safe distance
from the roadway.
Important!
The vehicle doors lock if the left front wheel rotates with
the engine running. Do not leave the engine running
while changing a wheel.
1. Set parking brake and turn on hazard warning
flasher.
2. Move selector lever to position “P”, turn off the
engine, and remove key from the steering lock. Lock
steering wheel with wheels in the straight ahead
position.
3. Prevent vehicle from rolling away by blocking
wheels with wheel chocks (not supplied with
vehicle) or sizable wood block or stone. When
changing a wheel on a hill, place chocks on the
downhill side blocking both wheels of the other
axle. On a level road, place one chock in front of and
one behind the wheel that is diagonally opposite to
the wheel being changed.4. Using the wrench, loosen but do not yet remove the
wheel bolts.
5. Open jack enough to fit under vehicle.
The jack take-up brackets are located directly
behind the front wheel housings and in front of the
rear wheel housings.
P40.10-2444-26
Page 274 of 342

271 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Inflating the space-saver tire (ML 55 AMG only)
1. Remove air pump from compartment behind the
space-saver spare wheel.
2. Open lid (arrow) and pull out filler hose (1) with
pressure gauge and electrical plug (2). Observe
manufacturer’s instructions.
3. Unscrew tire valve cap from space-saver tire valve.
4. Screw filler hose (1) onto space-saver tire valve.5. Plug air pump electrical plug (2) into electrical
outlet in front passenger footwell or rear cargo
compartment.
6. Start the engine and switch on the air pump.
7. Operate air pump (approximately 8 minutes) until
pressure gauge displays 61 psi (4.2 bar).
8. Switch off air pump and turn off the engine.
9. Unscrew filler hose from space-saver tire. Reinstall
tire valve cap.
Note:
Excessive tire air pressure should be released using the
vent screw.
3
12
Wa r n i n g !
When working on the vehicle with the engine
running, always set the parking brake in addition
to shifting the gear selector lever to position “P”.Wa r n i n g !
To prevent possible injury when unscrewing air
pump filler hose from space-saver tire valve after
inflating the tire, use a rag since the tire valve
could be hot.