trailer MERCEDES-BENZ ML350 2006 W163 Owner's Manual

Contents
Control system .................................. 150
Multifunction display .................... 150
Multifunction steering wheel ........ 151
Menus .......................................... 153
Standard display menu ................ 156
AUDIO menu ................................ 157
NAV* menu .................................. 158
Off-road menu .............................. 159
Vehicle status message
memory menu .............................. 159
Settings menu .............................. 161
Vehicle configuration ................... 175
Trip computer menu..................... 177
TEL menu* ................................... 178
Automatic transmission ..................... 182
Gear selector lever ....................... 182
Shifting procedure ....................... 184
Transmission positions................. 185
Gear ranges ................................. 187
Steering wheel gearshift control .. 188
Shifting into optimal gear range ... 190
Canceling gear range limit ........... 190
Driving tips ................................... 190
Towing a trailer ............................ 191
Emergency operation
(Limp Home Mode) ...................... 192Transfer case ...................................... 193
Good visibility ..................................... 194
Headlamp cleaning system* ......... 194
Rear view mirrors.......................... 194
Power folding exterior
rear view mirrors*......................... 197
Sun visors ..................................... 198
Rear window defroster .................. 200
Climate control ................................... 202
Deactivating the
climate control system ................. 206
Rear air conditioning ..................... 206
Setting the temperature................ 207
Adjusting air distribution............... 207
Adjusting air volume ..................... 208
Defrosting ..................................... 208
Air recirculation mode .................. 209
Air conditioning............................. 211
Residual heat and ventilation ........ 212
Rear air conditioning ..................... 2133-zone automatic climate control* ..... 216
Deactivating the
climate control system ................. 220
Rear air conditioning..................... 221
Setting the temperature ............... 221
Adjusting air distribution .............. 222
Adjusting air volume ..................... 222
Maximum cooling MAX COOL ....... 223
Defrosting ..................................... 223
Air recirculation mode .................. 223
Air conditioning ............................ 225
Residual heat and ventilation ........ 226
Rear air conditioning..................... 227
Power windows .................................. 230
Opening and closing
the windows ................................. 230
Synchronizing power windows ...... 232
Summer opening feature .............. 233
Convenience closing feature......... 234
Power tilt/sliding sunroof* ................ 235
Opening and closing the power
tilt/sliding sunroof........................ 235
Synchronizing the
power tilt/sliding sunroof ............. 237

ContentsDriving systems ................................. 238
Cruise control............................... 238
Downhill Speed Regulation
(DSR) ............................................ 243
Off-road driving program .............. 248
Air suspension package* ............. 249
Adaptive Damping System
(ADS)* .......................................... 249
Vehicle level control* ................... 250
Parktronic* system
(Parking assist) ............................. 254
Loading .............................................. 259
Loading instructions ..................... 259
,Split rear bench seat ................... 261
Partition net* ............................... 263
Cargo compartment cover*.......... 265
Cargo management system*........ 265
Roof rack* .................................... 269Useful features .................................. 270
Storage compartments ................ 270
Cup holders.................................. 274
Armrest in rear seat bench........... 275
Ashtrays* ..................................... 275
Cigarette lighter* ......................... 277
12-V sockets ................................ 277
Floormats* ................................... 279
Telephone* .................................. 279
Tele Aid* ...................................... 280
Garage door opener ..................... 289
Compass ...................................... 295
Infrared reflecting windshield* ..... 296
Operation......................................... 297
The first 1000 miles (1500 km) ......... 298
Driving instructions ........................... 299
Drive sensibly – save fuel............. 299
Drinking and driving ..................... 299
Pedals .......................................... 299
Power assistance ......................... 299
Brakes.......................................... 300
Driving off .................................... 301
Parking......................................... 301
Tires ............................................. 302
Hydroplaning................................ 303
Tire traction ................................. 303
Tire speed rating .......................... 303
Winter driving instructions ........... 304
Standing water............................. 305
Off-road driving ............................ 306
Trailer towing ............................... 314
Passenger compartment .............. 319
Driving abroad ............................. 319
Control and operation of radio
transmitters ................................. 320
Catalytic converter....................... 320
Emission control .......................... 321
Coolant temperature.................... 322

191 Controls in detail
Automatic transmission
Rocking the vehicle
Rocking the vehicle by shifting betweenD
andR can help free a vehicle stuck in mud
or snow. The engine control system of this
vehicle electronically limits shifting
betweenD andR to very low speeds
(i.e. approx. 2 mph). To shift betweenD
andR, move the gear selector lever past
the resistance point up or down.
Hill start assist system
On uphill grades, the hill start assist
system maintains the pressure in the
brake system for approximately
one second after you have released the
brake pedal. Therefore, you can start off
smoothly without the vehicle moving im-
mediately after releasing the brake pedal.
The hill start assist system is inactive

on driving downhill


in positionN


with the parking brake setWorking on the vehicle
Towing a trailer
If you tow a trailer, note the following
points:

Manually shift to a lower gear range
(page 187) if the transmission hunts
between gears on inclines.
A lower gear range and reduction of
speed reduces the chance to overload
or overheat the engine.
For more information on trailer towing, see
the “Operation” section (
page 314).
Warning!
G
The hill start assist system is not designed
to function as a parking brake and does not
prevent the vehicle from moving when
parked on an incline.
Always set the parking brake in addition to
shifting to park position
P.
iIf the ESP
® has switched off due to a
malfunction, the hill start assist system
is also unavailable.
Warning!
G
When working on the vehicle, set the
parking brake and shift to park positionP.
Otherwise the vehicle could roll away.

251 Controls in detail
Driving systems
!
Keep in mind that in rough or uneven
terrain, adjusting the vehicle to a lower
level may cause the vehicle underbody
to come in contact with the ground and
result in damage to the vehicle under-
body. Always make sure the vehicle
has sufficient ground clearance before
adjusting it to a lower level.!Before jacking up the vehicle with
equipment that lifts one or more of the
wheels completely off of the ground,
remove the SmartKey from the starter
switch.!Please also note the information in the
section on towing (
page 472).
iThe activation thresholds are defined
by the set suspension tuning
(page 249).
iThe high-speed level is not available if
towing a trailer. For more information
on towing a trailer, see “Trailer towing”
(page 314).
iFor off-road driving, please observe the
corresponding section in this manual
(page 306).

254 Controls in detailDriving systemsWhen the highway/high-speed level is
reached, the following message appears in
the multifunction display for five seconds:
Indicator lamp2 (
page 252) goes out.The following applies additionally when
towing a trailer:


The vehicle is lowered to the highway
level when it reaches a speed of 5 mph
(8 km/h).


The high-speed level is not available.


The restrictions that apply to towing
also apply when using accessories that
are connected to the trailer power
socket, such as an accessory bicycle
rack.
Parktronic* system (Parking assist)
iThe vehicle is lowered to the highway
level if:

the vehicle speed is above 55 mph
(88 km/h)


the speed stays between 40 mph
(64km/h) and 55mph (88km/h)
for approximately 20 seconds
iDepending on the ADS setting
(page 249), the vehicle will be low-
ered to the high-speed level when trav-
eling at higher speeds. At speeds below
40 mph (64 km/h) at the latest, it will
be returned to the highway level.
Warning!
G
Parktronic is a supplemental system. It is
not intended to, nor does it replace, the
need for extreme care. The responsibility
during parking and other critical maneuvers
always rests with the driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts, or road
curbs). Such objects may not be detected by
the system and can damage the vehicle.
The operational function of the Parktronic
system can be affected by dirty sensors, es-
pecially at times of snow and ice. See
“Cleaning the Parktronic system sensors”
(page 377).
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers, car wash,
or the air brakes of trucks) can cause the
system to send erratic indications, and
should be taken into consideration.


256 Controls in detailDriving systemsFront sensors
Rear sensorsMinimum distance
If the system detects an obstacle in this
range, all the distance warning segments
illuminate and you hear a warning signal. If
the obstacle is closer than the minimum
distance, the actual distance may no long-
er be indicated by the system.
Warning indicators
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicator for the
front area is located above the center air
vents in the dashboard. The warning indi-
cator for the rear area is located in the rear
passenger compartment in the roof dome.
Front area warning indicator1Left side of the vehicle
2Right side of the vehicle
3Readiness indicators
Each warning indicator is divided into five
yellow and two red segments for either
side of the vehicle. The Parktronic system
is operational when the readiness
indicators3 are illuminated.
The position of the automatic transmission
determines which warning indicator will be
activated.
Center
approx. 40 in (100 cm)
Corners
approx. 24 in (60 cm)
Center
approx. 48 in (120 cm)
Corners
approx. 32 in (80 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
planters or trailer hitches). The
Parktronic system will not detect such
objects at close range and damage to
your vehicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. working jackhammers, car
wash or the air brakes of trucks) may
impair the operation of the Parktronic
system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)

258 Controls in detailDriving systems
Parktronic* system malfunction
If only the red distance segments illumi-
nate and an acoustic warning sounds,
there is a malfunction in the Parktronic
system. The Parktronic system will auto-
matically switch off after 20 seconds.
Have the Parktronic system checked
by an authorized Mercedes-Benz Light
Truck Center as soon as possible.
If only the red distance segments illumi-
nate and no acoustic warning sounds, the
Parktronic system sensors are dirty or
there is an interference from other radio or
ultrasonic signals. The Parktronic system
will automatically switch off after
20 seconds.

Switch off the ignition (
page 34).

Clean the Parktronic system sensors
(page 377).

Switch on the ignition.
or

Check the Parktronic system operation
at another location to rule out interfer-
ence from outside radio or ultrasonic
signals.
iThe message
Parktronic on
reappears
as soon as the system senses that you
get closer to the object again, even if
you cleared the message before by
pressingèÿk or
buttonj on the multifunction
steering wheel.
iThe Parktronic system is automatically
switched on when the ignition is
switched on.
Vehicles with original equipment
Mercedes-Benz Trailer Hitch Kit:
The rear Parktronic sensor will auto-
matically disengage when towing a
trailer as soon as the electrical connec-
tion between the vehicle and the trailer
has been established.


301 Operation
Driving instructions
After hard braking, it is advisable to drive
on for some time, rather than immediately
park, so that the air stream will cool down
the brakes faster.Driving off
Apply the brakes to test them briefly after
driving off. Perform this procedure only
when the road is clear of other traffic.
Warm up the engine smoothly. Do not
place full load on the engine until the oper-
ating temperature has been reached.When starting off on a slippery surface, do
not allow a drive wheel to spin for an
extended period with the ESP
® switched
off. Doing so may cause serious damage to
the drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Parking
!When driving down long and steep
grades, relieve the load on the brakes
by shifting into a lower gear to use the
engine’s braking power. This helps
prevent overheating of the brakes and
reduces brake pad wear.
!Simultaneously depressing the
accelerator pedal and applying the
brake reduces engine performance and
causes premature brake and drivetrain
wear.!Set the parking brake whenever park-
ing or leaving the vehicle. In addition,
move gear selector lever to positionP.
When parking on hills, always turn front
wheels towards the curb.
Warning!
G
To reduce the risk of personal injury, or
damage to the vehicle powertrain, as a
result of vehicle/ trailer movement, before
turning off the engine and leaving the vehi-
cle always:

Keep right foot on brake pedal.


Firmly depress parking brake pedal.


Shift the automatic transmission to
positionP.


Slowly release brake pedal and let vehi-
cle and trailer roll into chocks until
stopped.


When parked on an incline, turn front
wheel towards the road curb.


Have a second person place wheel
chocks on downhill side of left and right
trailer wheels.


314 OperationDriving instructionsTrailer towing Trailer hitches*


Only install a trailer hitch receiver ap-
proved for your vehicle.
For information on availability and in-
stallation, see an authorized
Mercedes-Benz Light Truck Center.


The bumpers on your vehicle are not
designed for use with clamp-type hitch-
es.
Do not attach rental hitches or other
bumper-type hitches to them.


To reduce the possibility of damage, re-
move the hitch ball adaptor from the
receiver when not in use.Electrical connections
The vehicle is prewired to accept the sev-
en-wire harness included in the
Mercedes-Benz approved trailer hitch re-
ceiver kit.
An additional four-pole conversion plug is
included in the Mercedes-Benz supplied
trailer hitch receiver kit.
For further information, see an authorized
Mercedes-Benz Light Truck Center.
Warning!
G
Failure to use proper equipment and driving
technique can result in a loss of vehicle con-
trol when towing a trailer.
Improper towing or failure to follow the in-
structions contained in this guide can result
in vehicle damage and/or serious personal
injury. Follow the guidelines below carefully
to assure safe trailer operation.
Ask an authorized Mercedes-Benz Light
Truck Center should you require an explana-
tion of information contained in this guide.

315 Operation
Driving instructions
Vehicle and trailer weights and ratings
Gross Vehicle Weight Rating (GVWR) is the
maximum permissible vehicle weight:
6240 lbs (2830 kg).
Gross Vehicle Weight (GVW):
Comprises weight of vehicle including fuel,
tools, spare wheel, installed accessories,
passengers, cargo and trailer tongue. It
must never exceed the GVWR.
Gross Axle Weight Rating (GAWR) is the
maximum permissible axle weight:
The Gross Trailer Weight (GTW) is the
weight of the trailer plus the weight of all
cargo, equipment, luggage etc. loaded on
the trailer. The maximum permissible
gross trailer weight to be towed:
5000 lbs (2260 kg).Trailer Tongue Weight Rating (TWR) is the
maximum permissible weight on the trailer
tongue:
500 lbs (225 kg) limit for Mercedes-Benz
approved hitch receiver.
Loading a trailer


When loading a trailer, you should ob-
serve that neither the permissible GTW,
nor the GVWR are exceeded.
Maximum permissible values are listed
on the safety compliance certification
labels for the vehicle and for the trailer
to be towed.
The lowest value listed must be select-
ed when determining how the vehicle
and trailer are loaded.


The tongue weight at the hitch ball
must be added to the GVW to prevent
exceeding your Mercedes-Benz tow
vehicle’s rear GAWR.Checking weights of vehicle and trailer


To assure that the tow vehicle and trail-
er are in compliance with the maximum
permissible weight limits have the load-
ed rig (tow vehicle including driver, pas-
sengers and cargo, trailer fully loaded)
weighed on a commercial scale.


Check the vehicle’s front and rear
Gross Axle Weight (GAW), the GTW and
TW.
The values as measures must not
exceed the weight limits listed under
“Vehicle and trailer weight and ratings”
(page 315).
ML 350
ML 500
Front
2945 lbs
(1335 kg)
2985 lbs
(1355 kg)
Rear
3295 lbs
(1495 kg)
3255 lbs
(1475 kg)
iWe recommend loading the trailer in
such a manner that it has a tongue
weight (TW) between 10% and 15% of
the GTW.