2007 MERCEDES-BENZ GL450 Oil engine

562 Technical data
Fuels, coolants, lubricants
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, 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), or contact an authorized
Mercedes-Benz Light Truck Center.Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air
conditioning system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.
!Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System, or chang-
ing 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.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do
so will result in engine or emission control
system damage not covered by the
Mercedes-Benz Limited Warranty.
!Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from blending
oil additives are not covered by the
Mercedes-Benz Limited Warranty.
!Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the system
will occur.
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement inter-
val.

564 Technical data
Fuels, coolants, lubricants
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Diesel engine
Only use commercially available vehicular
ULTRA-LOW SULFUR DIESEL FUEL
(15 ppm SULFUR MAXIMUM).
To prevent malfunctions, diesel fuel with
improved cold flow characteristics is of-
fered in the winter months. Check with
your fuel retailer.Gasoline additives (gasoline engine)
A major concern among engine
manufacturers is carbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of quality gasoline containing
additives that prevent the build-up of
carbon deposits.
After an extended period of using fuels
without such additives carbon deposits
can build up, especially on the intake
valves and in the combustion area, leading
to engine performance problems such as:

Warm-up hesitation

Unstable idle

Knocking/pinging

Misfire

Power lossIn areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the
Factory Approved Service Products
pamphlet (USA only) or contact an
authorized Mercedes-Benz Light Truck
Center for a listing of approved product(s).
Follow directions on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary costs and
may be harmful to the engine operation.
!Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosine. The
fuel system and engine will otherwise be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited
Warranty.

565 Technical data
Fuels, coolants, lubricants
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:

Corrosion protection

Freeze protection

Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -35°F (-37°C) and corro-
sion protection.If the antifreeze mixture is effective to
-35°F (-37°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification are used to
renew the coolant concentration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Light Truck
Center.To provide important corrosion protection,
the solution must be at least 50% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately -35°F
[-37°C]). If you use a solution that is more
than 55% anticorrosion/antifreeze (freeze
protection to approximately -49°F
[-45°C]), the engine temperature will
increase due to the lower heat transfer
capability of the solution. Therefore, do not
use more than this amount of anticorro-
sion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Light
Truck Center.
!Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the
Mercedes-Benz Limited Warranty.

575 Index
Emergency operation
Fuel filler flap 501
Locking/unlocking the vehicle 500,
501
Power tilt/sliding sunroof*,
Manual operation 503
Emergency operation
(Limp-Home Mode) 202
Emergency operations
Exit for third-row seats 134
Remote door unlock, Tele Aid 338
Tailgate, Opening from the inside
manually 124
Emergency Tensioning Device see ETD
Emergency, In case of
Battery, Jump starting 538
Engine shut-down 546
First aid kit 495
Flat tire 523
Fuses 544
Hazard warning flasher 151
Instrument cluster, Indicator
lamps 436, 437, 438, 439, 440,
441, 442, 443, 444, 445, 446
Roadside Assistance 12, 336
Towing the vehicle 540Emission control 373
Information label 551
System warranties 10
Vacuum line routing diagram
label 551
Engine
Belt layout 552
Belt layout (GL 320 CDI) 552
Break-in recommendations 381
Cleaning 427
Compartment 379
Emergency engine shut-down 546
Malfunction indicator lamp 29, 472
Maximum engine speed 156, 553
Messages in the
multifunction display 472
Number 551
Starting 57
Starting with KEYLESS-GO* 59
Starting with the SmartKey 58
Tachometer 29, 156
Technical data 553
Turning off with KEYLESS-GO* 70
Turning off with the SmartKey 70Engine coolant see Coolant
Engine oil 381, 562
Adding 382, 562
Additives 562
Changing 382, 562
Checking level 381
Checking with the oil dipstick 381
Consumption 381
Filler neck 382
Messages in the
multifunction display 476
Recommended engine oils and oil
filters 562
Enhanced Off-road Package*
Vehicle level control 285
ESP® 27, 105
Four wheel electronic traction system
with ESP® 105
Messages in the
multifunction display 459, 460
Off-road-ESP® 108
Warning lamp 27, 441, 442

576 Index
ETD 91, 445
Safety guidelines 78
Expanding cargo compartment 306
Exterior rear view mirrors 52, 211
Folding 212
Power folding* 211
Synchronizing 212
F
Fastening the seat belts 54
Filler neck, Engine oil 382
First aid kit 495
Flat tire 523
Lifting the vehicle 524
Lowering the vehicle 528
Minispare wheel 499
Mounting the spare wheel 524
Preparing the vehicle 524
Floormats* 326Fluids
Automatic transmission fluid 382,
560
Brake fluid 378, 561, 562
Capacities 560
Engine coolant 378, 382, 561, 565
Engine oil 381, 560, 562
Power steering fluid 561
Windshield washer and headlamp
cleaning system* 378, 567
Fog lamps 148
Corner-illuminating
front fog lamps* 150
Messages in the
multifunction display 481
Rear fog lamp 149
Replacing bulbs 514
4-ETS 109
Off-road - 4-ETS 110
Front air bags 79
Front defroster 223, 237
Front lamps see Headlamps
Front passenger front air bag 74, 79
Messages in the multifunction
display 463, 464, 465, 466Front passenger front air bag off indicator
lamp 31, 32, 85
Front seat heat restraints see
Head restraints
Front towing eye 542
Fuel 376, 561
Additives 564
Capacities, Fuel tank 561
Consumption statistics 187, 188
Filling the tank 375
Fuel filler flap and cap 375, 501
Fuel gauge 29
Fuel tank reserve warning lamp 29,
442
Premium unleaded gasoline 376,
561, 563
Requirements, Octane rating 563
Fuel cap
Messages in the
multifunction display 478

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