2003 MERCEDES-BENZ ML350 electrical

Contents
Loading.............................................. 139
Loading instructions..................... 139
Partition net* ............................... 141
Cargo area cover blind* ............... 143
Cargo floor plates ........................ 144
Roof rack*.................................... 145
Driving systems ................................. 146
Cruise control .............................. 146
Parktronic system*
(Parking assist) ............................ 149
Useful features .................................. 152
Interior storage spaces ................ 152
Cup holders.................................. 154
Armrest in rear seat bench .......... 155
Ashtrays and cigarette lighter ...... 156
Electrical outlet ............................ 158
Telephone* .................................. 158
Tele Aid* ...................................... 159
Garage door opener ..................... 168
Trip computer*............................. 172Operation......................................... 177
The first 1000 miles (1500 km) ......... 178
Driving instructions............................ 179
Drive sensibly – save fuel............. 179Drinking and driving ...................... 179
Pedals ........................................... 179
Power assistance .......................... 179
Brakes........................................... 180
Driving off ..................................... 181
Parking.......................................... 182
Tires .............................................. 182
Hydroplaning................................. 183
Tire traction .................................. 183
Tire speed rating ........................... 184
Winter driving instructions ............ 184
Standing water.............................. 185
Off-road driving ............................. 186
Trailer towing ................................ 192
Passenger compartment ............... 196
Driving abroad .............................. 197
Control and operation of radio
transmitters .................................. 197
Catalytic converter........................ 198
Emission control ........................... 198
Coolant temperature..................... 199
At the gas station ............................... 200
Check regularly and
before a long trip .......................... 201Engine compartment .......................... 202
Hood ............................................. 202
Engine oil ...................................... 203
Transmission fluid level ................ 206
Coolant ......................................... 206
Battery .......................................... 207
Windshield washer system and
headlamp cleaning system ........... 208
Tires and wheels ................................ 209
Important guidelines ..................... 209
Life of tire ..................................... 210
Direction of rotation ..................... 210
Checking tire inflation pressure .... 211
Rotating wheels ............................ 212
Winter driving ..................................... 213
Winter tires ................................... 213
Block heater (Canada only) ........... 214
Snow chains ................................. 214
Maintenance ...................................... 215
Clearing the service indicator ....... 215
Service term exceeded ................. 215
Calling up the service indicator .... 216
Resetting the service indicator ..... 216
Vehicle care ....................................... 217
Cleaning and care
of the vehicle ................................ 217

ContentsPractical hints.................................. 223
What to do if … .................................. 224
Lamps in instrument cluster ......... 224
Additional indicators in the
speedometer display .................... 235
Where will I find ...?............................ 236
First aid kit ................................... 236
Vehicle tool kit ............................. 237
Electric air pump (ML 55 AMG) .... 238
Spare wheel (space-saver tire) ..... 239
Unlocking/locking in an emergency .. 242
Unlocking the vehicle ................... 242
Locking the vehicle ...................... 243
Changing batteries ....................... 243
Fuel filler flap ............................... 244
Manually unlocking the
transmission selector lever .......... 245
Opening/closing in an emergency ..... 246
Sliding/pop-up roof* .................... 246
Replacing bulbs ................................. 247
Bulbs ............................................ 247
Replacing bulbs for front lamps.... 249
Replacing bulbs for rear lamps ..... 251
Adjusting headlamp aim ............... 253Replacing wiper blades ...................... 254
Removal ....................................... 254
Installation ................................... 254
Flat tire .............................................. 255
Mounting the spare wheel ............ 255
Battery ............................................... 261
Disconnecting the battery ............ 261
Removing the batteries ................ 262
Charging and reinstalling
batteries....................................... 262
Reconnecting the batteries .......... 262
Jump starting ..................................... 264
Towing the vehicle ............................. 267
Front towing eye .......................... 269
Rear towing eye ........................... 269
Stranded vehicle .......................... 270
Fuses ................................................. 271
Fuse box in engine
compartment ............................... 271
Auxiliary fuse box in front
passenger footwell ....................... 272
Technical data................................. 273
Spare parts service............................ 274
Warranty coverage ............................ 275
Loss of Service and Warranty
Information Booklet ..................... 275
Identification labels ........................... 276
Layout of poly-V-belt drive ................. 277
Engine ............................................... 278
Rims and tires ................................... 279
Rims and tires .............................. 279
Rims and winter tires* ................. 280
Spare wheel ................................. 280
Electrical system ............................... 281
Main Dimensions ............................... 282
Weights ............................................. 283
Fuels, coolants, lubricants etc. .......... 284
Capacities .................................... 284
Engine oils ................................... 286
Engine oil additives ...................... 286
Air conditioning refrigerant .......... 286
Brake fluid.................................... 286
Premium unleaded gasoline ......... 286
Fuel requirements ........................ 287
Gasoline additives ........................ 287
Coolants ...................................... 287

23 At a glance
Cockpit
Item
Page
1
Hood lock release
202
2
Parking brake pedal
50
3
Parking brake release
50
4
Left cup holder
154
5
Combination switch

Turn signals


High beam
46
6
Cruise control lever
146
7
Instrument cluster
110
8
Hazard warning flasher
switch
106
9
Lever for voice control
system*, see separate
operating instructions
Item
Page
10
Windshield wiper/washer
switch
122
11
Front Parktronic* warning
indicator
150
12
Glove box
152
13
Right cup holder
154
14
Storage compartment
15
Electrical outlet
158
16
Horn
17
Headlamp washer button*
121
18
Steering lock with ignition
33
19
Steering wheel adjustment
stalk
37

28 At a glanceCenter consoleLower part
Item
Page
1
Ashtray with cigarette
lighter
156
2
Selector lever for
automatic transmission
44
3
Power window switch, right
front door
134
4
Power window switch, right
rear door
134
5
Parking assist* (Parktron-
ic) deactivation switch
149
6
Storage compartment with
cup holder
154
Item
Page
7
Exterior rear view mirror
adjustment switch
38
Exterior rear view mirror
electrically folding*
120
8
Central locking switch
89
9
Power window switch, left
rear door
134
10
Switch for rear door win-
dow override
69
11
Power window switch, left
front door
134

33 Getting started
Unlocking
Steering lock positions
Steering lock0For removing key
The steering is locked when the key is
removed from the steering lock. If nec-
essary, move steering wheel slightly to
allow the locking mechanism to en-
gage.
1Unlocking steering. Power supplies to
some electrical consumers, such as
seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position (selec-
tor lever is unlocked)
3Starting positionMore information can be found in the
“Controls in detail” section (
page 84).
Warning!
G
When leaving the vehicle always remove the
key from the steering lock and lock the vehi-
cle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment
may cause an accident and/or serious per-
sonal injury.
!To prevent accelerated battery dis-
charge and a possible dead battery, al-
ways remove the key from the steering
lock.iThe key can only be withdrawn in
position0.
If necessary, move steering wheel
slightly to allow the key to be turned
clockwise to position1.
A warning sounds when the driver’s
door is opened and the key is in steer-
ing lock position0 or1.

57 Safety and Security
Occupant safety
Safety guidelines for the seat belt,
emergency tensioning device and
airbag
iAirbags are designed to activate only in
certain frontal (front airbags) impacts,
or side (side impact and head protec-
tion window curtain airbags) impacts
which exceed preset thresholds.
Only during these types of impacts, if of
sufficient severity to meet the deploy-
ment thresholds, will they provide their
supplemental protection.
The driver and passenger should al-
ways wear their seat belts. Otherwise it
is not possible for the airbags to pro-
vide their supplemental protection.
In cases of other frontal impacts, an-
gled impacts, roll-overs, other side im-
pacts, rear collisions, or other
accidents, the airbags will not be acti-
vated. The driver and passengers will
then be protected by the fastened seat
belts.
We caution you not to rely on the pres-
ence of the airbags in order to avoid
wearing your seat belt.
Your vehicle was originally equipped
with airbags that are designed to acti-
vate in certain impacts exceeding a pre-
set threshold to reduce the potential
and severity of injury. It is important to
your safety and that of your passenger
that you replace deployed airbags and
repair any malfunctioning airbags to en-
sure that the vehicle will continue to
provide supplemental crash protection
for occupants.
Warning
G


Damaged seat belts or belts that were
highly stressed in an accident must be
replaced and their anchoring points
must also be checked. Use only belts in-
stalled or supplied by an authorized
Mercedes-Benz Light Truck Center.


No modifications of any kind may be
made to any components or wiring of
the SRS. This includes changing or re-
moving any component or part of the
SRS, the installation of additional trim
material, badges, etc. over the steering
wheel hub, passenger front airbag cov-
er, or door trim panels, and installation
of additional electrical /electronic
equipment on or near SRS components
and wiring. Keep area between airbags
and occupants free from objects (e.g.
packages, purses, umbrellas, etc.).

91 Controls in detail
Seats
Seats
Information on seat adjustment can be
found in the “Getting started” section
(page 34).
Seat heater*
The seat heaters can only be switched on
with the engine running.
The switches are located on the upper cen-
ter console.
1Normal heating
2Rapid heatingSwitching on normal seat heating mode

Press upper part1 of switch.
One indicator lamp in the switch lights
up.
Switching off normal seat heating
mode

Press upper part1 of switch again.
The indicator lamp in the switch goes
out.
Switching on rapid seat heating mode

Press lower part2 of switch.
Both indicator lamps in the switch light
up.Switching off rapid seat heating mode

Press lower part2 of switch again.
Both indicator lamps in the switch go
out.
iThe seat heater will be automatically
switched off after approximately
20 minutes.
iThe system switches over to normal
heating mode after approximately five
minutes. Only one indicator lamp re-
mains lit.!If one or both of the lamps on the seat
heater switch are blinking, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heater switches off auto-
matically.
The seat heater will switch back on
again automatically as soon as suffi-
cient voltage is available.

115 Controls in detail
Automatic transmission
Gear selector lever position
Gear
range
Effect
é
The transmission shifts
through fourth gear only.
è
The transmission shifts
through third gear only.
With this selection you can
use the braking effect of the
engine.
Gear
range
Effect
ç
The transmission shifts
through second gear only.
Allows the use of engine’s
braking power when driving

on steep downgrades


in mountainous regions


under extreme operating
conditions
æ
The transmission operates
only in first gear
For maximum use of engine’s
braking effect on very steep
or lengthy downgrades.
Effect
P
Park position
Selector position when the vehicle is
parked. Only place selector lever in
positionP when vehicle is stopped.
The park position is not intended to
serve as a brake when the vehicle is
parked. Rather, the driver should al-
ways set the parking brake in addi-
tion to placing the selector lever in
positionP to secure the vehicle.
The key can only be removed from
the steering lock with the selector le-
ver in positionP. With the key re-
moved the selector lever is locked in
positionP.
If the vehicle electrical system is mal-
functioning, the selector lever could
remain locked in positionP
(page 245).
R
Place selector lever in positionR only
when vehicle is stopped.