2007 MERCEDES-BENZ GL450 phone

382 Operation
Engine compartment
Adding engine oil
Example GL 450 (GL 320 CDI similar)
1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Never over-
fill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
For more information on engine oil, see
“Technical data” section (
page 560) and
(
page 562).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Light
Truck Center check the automatic trans-
mission.
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check the
coolant level, the vehicle must be parked
on level ground.
!Only use approved engine oils and oil filters
required for vehicles with Maintenance System.
For a listing of approved engine oils and oil
filters, refer to the Factory Approved Service
Products pamphlet (USA only) in your vehicle
literature portfolio, or contact an authorized
Mercedes-Benz Light Truck Center.
Using engine oils and oil filters of specification
other than those expressly required for the
Maintenance System, or changing of oil and oil
filter at change intervals longer than those called
for by the Maintenance System will result in
engine or emission control system damage not
covered by the Mercedes-Benz Limited
Warranty.
!Excess oil must be siphoned or drained off.
It could cause damage to the engine and/or
catalytic converter (gasoline engine) or the oxi-
dation catalyst (diesel engine) not covered by
the Mercedes-Benz Limited Warranty.

477 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/conse-
quencePossible solution
NEngine oil level
Stop car, turn engine offThere is no oil in the engine.
There is a danger of engine
damage.Carefully bring the vehicle to a halt as soon as it
is safe to do so in a safe location.
Turn off the engine.
Add engine oil (page 382) and check the en-
gine oil level (
page 381).
Engine oil level
Reduce oil levelYou have added too much
engine oil. There is a risk of
damaging the engine and/or
the catalytic converter (gaso-
line engine) or the oxidation
catalyst (diesel engine).Have oil siphoned or drained off.
Observe all legal requirements with respect to
its disposal.
Engine oil level
Visit workshopThe engine oil has dropped to
a critical level.Check the engine oil level (page 381) and add
oil as required (
page 382).
If you must add engine oil frequently, have the
engine checked for possible leaks.
!The engine oil level warnings should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damagethat is not covered by the Mercedes-Benz
Limited Warranty.

487 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
L Tele Aid
inoperativeOne or more main functions of the
Tele Aid system are malfunctioning.Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
Tele Aid
batteryThe emergency power battery for the
Tele Aid system is malfunctioning. If the
vehicle battery is also malfunctioning or
drained, Tele Aid will not be operational.Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
tFunction
unavailableThis display appears if buttont
ors on the multifunction steering
wheel is pressed and the vehicle is not
equipped with a telephone.
W Top up
washer fluidThe fluid level has dropped to about 1/3 of
total reservoir capacity.Add washer fluid (page 384).
] Clean fuel filterHave the fuel filter checked by an
authorized Mercedes-Benz Light
Truck Center.
» Replace air filterThe air filter is clogged.Have the air filter checked by an
authorized Mercedes-Benz Light
Truck Center.

577 Index
Fuel consumption statistics
Since last reset 188
Since start 187
Fuel filler flap 375
Locking/unlocking 375
Opening 375
Opening in an emergency 501
Fuel tank
Capacity 561
Filler flap 375
Fuels, coolants, lubricants etc. 560
Fuses 544
Fuse box in cargo compartment 545
Fuse box in engine compartment 545
Fuse box in passenger
compartment 546
Fuse chart 495, 544
Fuse extractor 495, 544
Replacing 544
Spare fuses 495, 544G
Garage door opener 339
Gasoline see Fuel
GAWR 416
Gear range
Automatic transmission 192, 200
Limiting 200
Shifting into optimal 202
Gear selector lever 25, 58, 192
Cleaning 433
Gearshift pattern for automatic
transmission 192
Messages in the
multifunction display 461
Position indicator 195, 200
Transmission position 195
Global locking/unlocking see Key,
SmartKey
Glove box 316
Good visibility 210Gross Axle Weight Rating see GAWR
Gross Trailer Weight see GTW
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GTW 416
GVW 416
GVWR 416
H
Halogen headlamp see Headlamps
Hands-free microphone 34
Hard plastic trim items, cleaning 433
Hazard warning flasher 151
Head restraints 46, 135
Active head restraint 92, 135
Front seats, Adjusting 46
Rear seats 93
Rear seats, Adjusting 137
Rear seats, Removing and
installing 138
Headlamp aim
Adjusting 518
Headlamp cleaning system* 210, 384
Reservoir capacity 561
Headlamp shut-off delay see Delayed
shut-off, Exterior lamps

581 Index
Lighting, Exterior and interior 145
Limp-Home Mode 202, 439, 440
Loading see Vehicle loading
Locator lighting 148, 179
Lock buttons, KEYLESS-GO*
Outside door handle 72
Locking the vehicle see Key
Loss of keys, Mechanical key 122
Loss of keys, SmartKey 122
Loss of keys, SmartKey with
KEYLESS-GO* 122
Loss of Service and Warranty Information
Booklet 549
Low beam headlamps
Messages in the
multifunction display 483
Replacing bulbs 509
Switching on 62, 145
LOW RANGE mode* 203
Messages in the
multifunction display 493, 494
Lubricants 560
Lumbar support 139M
Main dimensions 558
Maintenance 12, 422
Calling up service indicator
display 424
Clearing service indicator
message 423
Maintenance System 422
Resetting service indicator 424
Service indicator message 422
Service term exceeded 423
Maintenance System 422
Manual headlamp mode see Headlamps
Maximum cooling, MAXCOOL* see
Automatic climate control
(3-zone)* 239
Maximum load rating, Tires 417
Maximum loaded vehicle weight,
Tires 417
MB Tex upholstery, Cleaning and
care of 434
Mechanical key 500Memory function* see Seats
Menus see Control system menus
Messages in display see Multifunction
display messages
Microphone, Hands-free 34
Minispare wheel see Spare wheel
Mirrors
Adjusting 52
Auto-dimming rear view
mirrors* 211
Exterior rear view mirror 52
Interior rear view mirror 52, 210
MON 376, 563
Multicontour seat* 140
Multifunction display 157
Changing settings see Control system
menus and Control system sub-
menus
Displaying current gear range 200
Selecting display 175
Selecting language 174

582 Index
Multifunction display messages 451
ABS 453
Air suspension 490
Air suspension package* 490
Brake fluid 472
Brake lamps 481
Brake pads 470
Check engine 472
Coolant 475
Cruise control 454
Distronic* 455
Doors 478
Downhill Speed Regulation 470
EBP 471
Engine coolant 473, 475
Engine oil 476
ESP® 441
Fog lamps, Front 481
Fog lamps, Rear 484
Front passenger front air bag 463,
464, 465, 466
Fuel cap 478
Gear selector lever 461
Headlamps 481, 483, 484, 486
Hood 478Key, SmartKey 480
Key, SmartKey with
KEYLESS-GO* 479, 480
Lamps 481, 483, 484, 486
Low tire pressure 467, 488, 489
Parking brake 461, 471
Parking lamps 482
Tele Aid 487
Telephone* 487
Turn signals 486
Vehicle battery 469
Windshield washer fluid 487
Multifunction steering wheel 30, 158
Button operation 158
N
Navigation system* 168
See separate COMAND System
operating instructions
Net, Cargo* 313
Net, Parcel 320
Neutral gear position, Automatic
transmission 192
New vehicle, Break-in period 348
Night security illumination 148, 179
Normal occupant weight 417
Number, Vehicle Identification (VIN) 550O
Occupant distribution 417
Occupant safety 74
Active head restraint 92
Air bags 76
Children and air bags 77, 93, 96
Children in the vehicle 93
Fastening the seat belt 54
Front passenger front air bag off
indicator lamp 82, 85, 86
Infant and child restraint systems 94
LATCH-type child seat anchors 97
OCS* 81
OCS*, Messages in the multifunction
display 463, 464, 465, 466
Seat belts 54, 78
OCS* 81
Self-test 86
Odometer 156, 157, 164

583 Index
Off-road - 4-ETS 110
Off-road - ABS 104
Off-road - ESP® 108
Off-road driving
Checklist 359, 365
Crossing obstacles 363
Driving instructions for off-road
driving 357
Driving through water 362
Returning 365
Rules 358
Special driving features 358
Steep terrain 360
Off-road driving program (Vehicles without
enhanced off-road package*) 279
Oil level see Engine oil, Checking level
One-touch gearshifting 202
Operating safety 17
Operator’s Manual 10
Ornamental moldings, Cleaning 429
Outside temperature see Displays
Overdue maintenance service term 423
Overhead control panel 34
Oxidation catalyst (diesel engine) 373P
Paintwork code 550
Paintwork, Cleaning 426
Panic alarm 102
Panorama roof, Rear 214
Parcel net
Front passenger footwell 320
Front seat backrests 320
Parking 68, 352
On hills 68
Over things that burn, Potential
consequences 68, 373
Parking brake 60, 68
Lamps, Indicator and warning 437
Messages in the
multifunction display 471
Releasing 61
Parking lamps 509
Messages in the
multifunction display 482
Replacing bulbs 513
Parking position*
Exterior rear view mirrors 185, 211Parktronic* 31, 32, 290
Cleaning system sensors 430
Minimum distance 292
Range 291
Switching on/off 293
System malfunction 294
System sensors 291
System sensors, Cleaning 430
Warning indicators 25, 292
Parts service 548
PASS AIR BAG OFF indicator lamp see
Front passenger front air bag off
indicator lamp
Passenger compartment 371
Fuse box 546
Interior lighting 151
Interior rear view mirror 34
Parcel net in front passenger
footwell 320
Passenger safety see Occupant safety
Pedals 349
Phone see Telephone*

588 Index
T
Tachometer 29, 156
Displaying current gear range 200
Overspeed range 156
Tail lamps 515
Cleaning lenses 429
Messages in the
multifunction display 485
Replacing bulbs 509, 517
Tailgate
Closing from the inside,
Electrically* 127
Closing from the outside
(vehicles without
KEYLESS-GO*) 128
Opening from the inside,
Electrically* 126
Opening from the inside,
Manually 124
Opening from the outside 124Tar stains 426
Technical data 547
Air conditioning refrigerant 561, 562
Brake fluid 561, 562
Capacities fuels, coolants, lubricants
etc. 560, 561
Coolant 561, 565
Dimensions, Vehicle 558
Electrical system 557
Engine 553
Engine oil 560, 562
Engine oil additives 562
Fuel requirements 563
Fuels, coolants, lubricants, etc. 560
Gasoline additives 564
Main dimensions 558
Premium unleaded gasoline 563
Rims 554
Tires 554
Weights 559
Windshield washer and headlamp
cleaning* system 561, 567Tele Aid 332
Call priority 338
Emergency calls 334
Hands-free microphone 34
Information 337
Initiating an emergency call
manually 335
Messages in the
multifunction display 487
Remote door unlock 338
Roadside Assistance 336
SOS button 335
Stolen Vehicle Recovery
services 339
System self-check 333
Telephone cradle*
Changing 331
Telephone* 329
Answering/ending a call 190
Changing mobile phone cradle 331
Dialing a number from the phone
book 190
Ending a call or rejecting an incoming
call 190