2003 MERCEDES-BENZ ML500 trailer

195 Operation
Driving instructions
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.


Always secure items in the trailer to
prevent load shifts while driving.


When towing a trailer, check occasion-
ally to be sure that the load is secure,
and that lighting and trailer brakes (if
so equipped) are functioning properly.


Take into consideration that when tow-
ing a trailer, the handling characteris-
tics are different and less stable from
those when operating the vehicle with-
out a trailer.
It is important to avoid sudden maneu-
vers.


The vehicle and trailer combination is
heavier, and therefore is limited in ac-
celeration and climbing ability, and re-
quires longer stopping distances.
I t i s m o r e p r o n e t o r e a c t i n g t o s i d e w i n d
gusts, and requires more sensitive
steering input.


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.


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 re-
duces the chance of engine overload-
ing and / or overheating.


On very steep inclines, not manageable
with selector lever in position1, switch
transfer case to LOW RANGE mode
(page 118).


When going down a long hill, shift into
a lower gear and use the engine’s brak-
ing effect.
Avoid riding the brakes, thus overheat-
ing the vehicle and trailer brakes.
!If the trailer should begin to sway, re-
duce 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 trail-
er by increasing the speed or over-
steering and stepping on the brakes.

196 OperationDriving instructions

If the engine coolant rises to an ex-
tremely high temperature (coolant tem-
perature needle approaching the red
zone) when the air conditioning is on,
turn off the air conditioning system.
Engine coolant heat can be additionally
vented by opening the windows,
switching the climate control fan speed
to high and setting the temperature
control to the maximum hot position.


Extreme care must be exercised since
your vehicle with a trailer will require
additional passing distance ahead than
when driving without a trailer.
Because your vehicle and trailer is
longer than your vehicle alone, you will
also need to go much farther ahead of
the passed vehicle before you can re-
turn to your lane.Parking
Passenger compartment
Warning!
G
To reduce the risk of personal injury, or
damage to the vehicle powertrain, as a re-
sult of vehicle/trailer movement, always:

Keep right foot on brake pedal.


Shift gear selector lever to positionN.


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


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


Firmly depress parking brake pedal.


Move gear selector lever to position P.


When parked on an incline, turn front
wheel towards the road curb.
Warning!
G
Always fasten items being carried as secure-
ly as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
The trunk is the preferred place to carry ob-
jects. Always use partition net when trans-
porting cargo. Partition net cannot secure
hard or heavy objects.

270 Practical hintsTowing the vehicleML 55 AMG and vehicles with sport pack-
age*1Cover
2Towing eye
To remove cover:
Grip cover at bottom and securely pull
out.
To reinstall cover:

Engage cover and press in securely.
Stranded vehicle
Freeing a stranded vehicle, on which the
wheels are dug into sand or mud, should
be done with the greatest of care, especial-
ly if the vehicle is heavily loaded.
Avoid pulling the vehicle jerkily or diago-
nally, since it could result in damage to the
chassis alignment.
Never try to free a vehicle that is still cou-
pled to a trailer.
If possible, a vehicle equipped with trailer
hitch receiver should be pulled backward
in its own previously made tracks.

300 Index
Passenger 59
Safety guidelines 57
Side impact 59
Window curtain 59
Alarm
Audible 70, 79
Canceling 79
Visual 78
Alarm system
Anti-theft 78
Anticorrosion/antifreeze 288
Antiglare
Automatic 119
Antilock brake system (ABS) 293
Anti-theft alarm system
Arming 78
Canceling alarm 79
Disarming 79
Anti-theft systems
Anti-theft alarm system 78
Immobilizer 78
Tow-away alarm, glass breakage
sensor 79
Aquaplaning see Hydroplaning 183Armrest
Storage compartment in front of 153
Storage spaces 153
Armrest in rear seat bench 155
Ashtray
Front center console 156
Rear center console 157
At the gas station 200
ATF (automatic transmission fluid) 206
Attaching a trailer 194
Automatic antiglare for rear
view mirror 119
Automatic central locking
Activating 89
Deactivating 89
Automatic climate control 124
Adjusting air distribution 127
Adjusting air volume 127
Air conditioning 129
Air outlets 132
Air recirculation mode 128
Basic setting 127
Changing basic setting 127
Defrosting 128Economy mode 125
Rear passenger compartment 131
Rear window defroster 131
Residual heat utilization 130
Residual ventilation 130
Switching off 127
Switching on 126
Automatic headlamp mode 103
Automatic interior lighting control
Activating 107
Deactivating 107
Automatic locking when driving 89
Automatic transmission 113
Accelerator position 117
Emergency operation (Limp Home
Mode) 117
Gear ranges 114
Gear selector lever position 115
Gear shifting malfunctions 117
Kickdown 117
Manual shifting 113
One-touch gearshifting 113
Selector lever position 113
Towing a trailer 117
Transmission fluid 206

302 IndexCargo floor plates 144
Installing 144
Removing 144
Storing 144
Cargo tie-down rings 140
Catalytic converter 198
CD-changer* 238
Center console 27
Lower part 28
Upper part 27
Central locking
Automatic 89
From inside 89
Switch 90
Unlocking from inside 89, 90
Central locking switch 90
Certification label 276
Charge indicator lamp 233
Charging
Vehicle battery 262
Chart
Fuses 271
CHECK ENGINE malfunction indicator
lamp 232
Checking
Coolant level 201, 206Oil level 201, 203
Tire inflate pressure 201
Vehicle lighting 201
Checking weights
Trailer and vehicle 193
Checklist
Off-road driving 187
Returning from off-road driving 191
Child safety 63
Airbags 56
Infant and child restraint systems 54,
60, 63
LATCH child seat mounts 68
Child safety switch see Blocking of rear
door window operation 69
Cigarette lighter
Front center console 156
Cleaning
Cup holder 221
Gear selector lever 221
Hard plastic trim items 221
Headlamps 121
Headliner 221
Instrument cluster 221
Leather upholstery 222
Light alloy wheels 221MB Tex upholstery 222
Plastic and rubber parts 222
Seat belts 221
Steering wheel 221
Windows 220
Windshield 48
Wiper blades 220
Cleaning and care of the vehicle see
Vehicle care 217
Clock 26, 112
Closing
Glove box 152
Hood 203
Liftgate 88
Rear quarter windows* 136
Side windows 135
Sliding/pop-up roof 246
Sliding/pop-up roof* 137
Closing sliding/pop-up roof
In an emergency 246
Cockpit 22, 293
Combination switch 102
High beam flasher 47, 102
Turn signals 47
Windshield wipers 47

304 IndexDisplay messages
Error 235
Service indicator (FSS) 235
StArt 235
Displays
Service indicator 215
Distance remaining 175
Door entry lamps 107
Door unlock
With Tele Aid* 167
Doors
Opening from inside vehicle 86
Opening from outside 85
Downhill driving
Cruise control 147
Downshifting 113
Drink holder see Cup holder 155
Drinking and driving 179
Driving 40, 45
Abroad 197
General instructions 179
In winter 184
Problems 49
Safety systems 71
Through standing water 185
Driving abroad 197Driving instructions 179
Towing a trailer 194
Driving off 181
Driving safety systems
4-ETS 73
ABS 71
BAS 73
ESP 75
Driving systems 146
Cruise control 146
Driving safety systems 71
EBP 74
Parktronic* 149
Driving through water 189
E
Easy entry/exit feature* 95
EBP 74
Indicator lamp 229
Economy mode
Automatic climate control 125
Electric air pump 238
Electrical connections
Trailer 192
Electrical fuses 271
Electrical outlet 158Electrical system
Technical data 281
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP 25,
75
Electronic stability program see ESP 294
Electronic Traction System see 4-ETS 25
Emergency call system
Requirements 160
Emergency call system* 160
Emergency calls
Initiating an emergency call 163
With Tele Aid* 161
Emergency operation (Limp Home
Mode) 117
Emergency operations
Closing sliding/pop-up roof 246
Locking the vehicle 243
Opening sliding/pop-up roof 246
Remote door unlock 167
Unlocking the vehicle 242
Emergency tensioning device
see ETD 62, 294
Emission control 198
Emission control label 276

309 Index
Light alloy wheels
Cleaning 221
Lighter
Rear center console 157
Lighter see cigarette lighter 156
Lighting 102
Automatic headlamp mode 103
Cargo compartment 109
Combination switch 102
Daytime running lamp mode 103
Door entry lamps 107
Front fog lamps 105
High beam flasher 102
High beams 102
Instrument cluster illumination 110
Interior 107
Locator lighting 105
Low beam 102
Night security illumination 104
Parking lamps 102
Limiting the gear range 114
Limp Home Mode 117
Line of fall 294
Loading 139
Cargo area cover blind* 143
Cargo floor plates 144Cargo tie-down rings 140
Hooks 140
Instructions 139, 140
Partition net* 141
Roof rack 145
Split rear bench seat 93
Trailer 193
Locator lighting 105
Lock button 294
Locking 84
Automatic while driving 89
Centrally from inside 90
Fuel filler flap 200
Global 85
Vehicle in an emergency 243
Locking knobs 32
Loss of keys 86
Loss of Service and Warranty Information
Booklet 275
Low beam headlamps
Replacing bulbs 247, 249
Switching on 46
Low engine oil level
Indicator lamp 229
LOW RANGE - 4-ETS 74
LOW RANGE - ABS 72LOW RANGE - ESP 76
LOW RANGE mode 118
Low washer system fluid level
Indicator lamp 234
Lowering
Vehicle 258
M
Main dimensions 282
Maintenance 12
Display messages 235
Manual operations
Fuel filler flap 244
Interior lighting control 108
Locking the vehicle 243
Sliding/pop-up roof 246
Unlocking the driver’s door 242
Unlocking transmission selector
lever 245
Manual seat
Adjusting 35
Adjusting backrest tilt 36
Adjusting head restraint height 36
Adjusting head restraint tilt 36
Seat fore and aft adjustment 35
Seat height 35

311 Index
Sliding/pop-up roof in an
emergency 246
Sliding/pop-up roof* 137
Storage compartment in front of
armrest 154
Storage compartment under passenger
seat 153
Windows 135
Opening and closing
Side windows 134
Operating
Garage door opener 171
Integrated remote control 171
Radio transmitters 197
Vehicle outside the USA and
Canada 13
Operating safety 17
Operator’s Manual 10
Ornamental moldings 220
Outside temperature indicator 112
Overdue service 215
Overhead control panel 29
P
Paintwork 219
Panic alarm 70
Panic button on remote control 70Parking 182
Trailer towing 196
Parking and locking 50
Parking brake 45, 50
Engaging 50
Releasing 45
Parking lamps
Replacing bulbs 247, 248, 250
Replacing the bulbs 250
Switching on 102
Parking position
Exterior rear view mirrors 100
Parktronic* 149, 295
Cleaning system sensor 220
Monitoring reach 150
Sensor cover 220
Switching off 151
Switching on 151
Warning indicators 150
Partition net
Engaging 141
Removing 142
Tightening 142
Partition net* 141
Parts see Spare parts servicePassenger compartment 196
Interior lighting 107
Passenger footwell
Fuse box in 272
Passenger safety see Occupant safety 54
Pedals 179
Plastic and rubber parts
Cleaning 222
Poly-V-belt drive 295
Layout 277
Positions (Memory function*)
Recalling from memory 100
Storing into memory 100
Power assistance 179
Power seat*
Adjusting backrest tilt 37
Adjusting head restraint height 37
Adjusting head restraint tilt 37
Adjusting seat cushion tilt 37
Adjusting seat height 36
Seat fore and aft adjustment 37
Power seats 37
Power train 295
Power washer 218