2007 MERCEDES-BENZ GL320CDI engine

Our company and staff congratulate you
on the purchase of your new
Mercedes-Benz.
Your selection of our product is a demon-
stration of your trust in our company
name. Furthermore, it exemplifies your de-
sire to own an automobile that will be as
easy as possible to operate and provide
years of service.
Your Mercedes-Benz represents the ef-
forts of many skilled engineers and crafts-
men. To help assure your driving pleasure,
and also the safety of you and your passen-
gers, we ask you to make a small invest-
ment of time:
Please read this manual carefully,
then return it to your vehicle where it
will be handy for your reference.

Please follow the recommendations
contained in this manual. They are de-
signed to acquaint you with the opera-
tion of your Mercedes-Benz.

Please pay attention to the warnings
and cautions contained in this manual.
They are designed to help improve the
safety of the vehicle operator and occu-
pants.
We extend our best wishes for many miles
of safe, pleasurable driving.
Mercedes-Benz USA, LLC
A DaimlerChrysler Company

Contents
Introduction.......................................... 9
Product information ................................ 9
Operator’s Manual ............................... 10
Service and warranty information .. 10
Important notice for California
retail buyers and lessees of
Mercedes-Benz automobiles .......... 11
Maintenance .................................. 12
Roadside Assistance ...................... 12
Change of address or ownership.... 13
Operating your vehicle
outside the USA or Canada ............ 13
Where to find it .................................... 15
Symbols ............................................... 16
Operating safety .................................. 17
Proper use of the vehicle ............... 17
Problems with your vehicle .................. 18
Reporting safety defects...................... 19
Reporting safety defects ................ 19
Vehicle data recording......................... 20
Information regarding electronic
recording devices........................... 20At a glance.......................................... 21
Exterior view ......................................... 22
Cockpit ................................................. 24
Instrument cluster ................................ 26
Instrument cluster ................................ 28
Multifunction steering wheel ................ 30
Center console ..................................... 31
Upper part (Vehicles without
enhanced off-road package*) ......... 31
Upper part (Vehicles with
enhanced off-road package*) ......... 32
Lower part ...................................... 33
Overhead control panel ........................ 34
Door control panel................................ 35
Storage compartments ......................... 36Getting started................................... 39
Unlocking ............................................. 40
Unlocking with the SmartKey ......... 40
Unlocking with KEYLESS-GO*......... 41
Starter switch positions .................. 41
Adjusting .............................................. 45
Seats .............................................. 45
Steering wheel ................................ 49
Mirrors ............................................ 52
Driving .................................................. 54
Fastening the seat belts ................. 54
Starting the engine ......................... 57
Parking brake ................................. 60
Driving off ....................................... 61
Switching on headlamps ................. 62
Turn signals .................................... 63
Windshield wipers ........................... 63
Rear window wiper/washer ............ 65
Problems while driving.................... 66
Parking and locking .............................. 68
Parking brake ................................. 68
Switching off headlamps................. 69
Turning off the engine ..................... 69
Releasing seat belts........................ 71
Locking ........................................... 71

Contents
Power tilt/sliding sunroof* ................ 253
Opening and closing ..................... 253
Synchronizing ............................... 255
Driving systems ................................. 257
Cruise control............................... 257
Distronic*..................................... 262
Distance warning function*.......... 274
Downhill Speed Regulation
(DSR) ............................................ 275
Off-road driving program
(Vehicles without
enhanced off-road package*) ....... 279
Air suspension package ............... 280
Adaptive Damping System
(ADS)* .......................................... 280
Vehicle level control ..................... 281
Parktronic system* ...................... 290
Rear view camera* ....................... 295
Loading .............................................. 297
Carriers* ...................................... 297
Loading instructions ..................... 303
Cargo tie-down rings .................... 304
Hooks ........................................... 306
Expanding cargo compartment .... 306
Cargo compartment cover blind ... 312
Cargo net* ................................... 313Useful features .................................. 316
Storage compartments ................ 316
Parcel nets ................................... 320
Cup holders.................................. 321
Ashtrays* ..................................... 322
Cigarette lighter* ......................... 324
Power outlets ............................... 325
Floormats* ................................... 326
Seat cover under
third-row seats ............................. 327
Heated steering wheel* ............... 328
Telephone* .................................. 329
Tele Aid ........................................ 332
Garage door opener ..................... 339
Compass ...................................... 345
Infrared reflecting windshield* ..... 345
Operation......................................... 347
The first 1000 miles (1500 km) ......... 348
Driving instructions ........................... 349
Drive sensibly – save fuel............. 349
Drinking and driving ..................... 349
Pedals .......................................... 349
Power assistance ......................... 350
Brakes.......................................... 350
Driving off .................................... 352
Parking......................................... 352
Tires ............................................. 353
Hydroplaning................................ 354
Tire traction ................................. 354
Tire speed rating .......................... 354
Winter driving instructions ........... 355
Standing water............................. 356
Off-road driving ............................ 357
Trailer towing ............................... 366
Passenger compartment .............. 371
Driving abroad ............................. 372
Control and operation of
radio transmitters ........................ 372
Catalytic converter
(gasoline engine) .......................... 373
Oxidation catalyst (diesel engine) 373

Contents
Emission control .......................... 373
Coolant temperature .................... 374
At the gas station .............................. 375
Refueling ...................................... 375
Check regularly and
before a long trip.......................... 377
Engine compartment ......................... 379
Hood ............................................ 379
Engine oil ..................................... 381
Transmission fluid level ................ 382
Coolant level ................................ 382
Windshield/rear window
washer system and
headlamp cleaning system* ........ 384
Tires and wheels ................................ 385
Important guidelines .................... 385
Tire care and maintenance........... 386
Direction of rotation ..................... 388
Loading the vehicle ...................... 388
Recommended tire
inflation pressure ......................... 394
Checking tire inflation pressure ... 396
Tire labeling.................................. 406
Load identification ....................... 410
DOT, Tire Identification
Number (TIN) ............................... 410Maximum tire load ........................ 412
Maximum tire inflation pressure ... 412
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 413
Tire ply material ............................ 415
Tire and loading terminology......... 415
Rotating tires ................................ 418
Winter driving ..................................... 420
Winter tires ................................... 420
Snow chains.................................. 421
Maintenance....................................... 422
Maintenance service indicator
message ....................................... 422
Calling up the maintenance
service indicator display ............... 424
Resetting the maintenance
service indicator ........................... 424
Vehicle care........................................ 425
Cleaning and care of the vehicle ... 425
Practical hints.................................. 435
What to do if … ................................... 436
Lamps in instrument cluster ......... 436
Lamp in center console ................ 448
Vehicle status messages in
the multifunction display .............. 451
Where will I find ...? ............................ 495
First aid kit.................................... 495
Vehicle tool kit.............................. 495
Spare wheel .................................. 499
Unlocking/locking in an emergency .. 500
Unlocking the vehicle ................... 500
Locking the vehicle ....................... 501
Fuel filler flap ................................ 501
Opening/closing in an emergency ..... 503
Power tilt/sliding sunroof* ........... 503
Resetting activated head restraints.... 504
Replacing SmartKey batteries ............ 506
Replacing bulbs .................................. 508
Bulbs............................................. 508
Replacing bulbs for front lamps .... 511
Replacing bulbs for rear lamps ..... 515
Adjusting headlamp aim ............... 518

Contents
Replacing wiper blades ...................... 520
Front wiper blades ....................... 520
Rear wiper blade .......................... 521
Flat tire .............................................. 523
Preparing the vehicle.................... 523
Mounting the spare wheel ............ 524
Bleeding the fuel system
(diesel engine only) ............................ 529
Battery ............................................... 530
Disconnecting, removing,
reinstalling and
reconnecting the battery .............. 532
Charging the battery .................... 537
Jump starting ..................................... 538
Towing the vehicle ............................. 540
Installing towing eye bolt.............. 542
Stranded vehicle .......................... 543
Fuses ................................................. 544
Fuse box in engine compartment . 545
Fuse box in cargo compartment ... 545
Fuse box in
passenger compartment .............. 546
Emergency engine shut-down ...... 546
Technical data................................. 547
Parts service ...................................... 548
Warranty coverage............................. 549
Loss of Service and Warranty
Information Booklet ..................... 549
Identification labels ........................... 550
Layout of poly-V-belt drive ................. 552
GL 320 CDI .................................. 552
GL 450 ......................................... 552
Engine................................................ 553
Rims and tires.................................... 554
Same size tires ............................. 555
Minispare wheel ........................... 556
Electrical system ............................... 557
Main Dimensions ............................... 558
Weights.............................................. 559Fuels, coolants, lubricants ................. 560
Capacities .................................... 560
Engine oils ................................... 562
Engine oil additives ...................... 562
Air conditioning refrigerant .......... 562
Brake fluid.................................... 562
Premium unleaded gasoline
(gasoline engine) .......................... 563
Fuel requirements ........................ 563
Gasoline additives
(gasoline engine) .......................... 564
Coolants ...................................... 565
Windshield washer system and
headlamp cleaning system*......... 567
Index................................................. 569

13 Introduction
Operator’s Manual
Change of address or ownership
If you change your address, be sure to
send in the “Change of Address Notice”
found in the Service and Warranty Informa-
tion Booklet, or simply call the
Mercedes-Benz Customer Assistance
Center (in the USA) at
1-800-FOR-MERCedes, or Customer
Service (in Canada) at 1-800-387-0100. It
is in your own interest that we can contact
you should the need arise.
If you sell your Mercedes, please leave all
literature with the vehicle to make it avail-
able to the next operator.
If you bought this vehicle used, be sure to
send in the “Notice of Purchase of Used
Truck” found in the Service and Warranty
Information Booklet, or call the
Mercedes-Benz Customer Assistance
Center (in the USA) at
1-800-FOR-MERCedes, or Customer
Service (in Canada) at 1-800-387-0100.Operating your vehicle outside the USA
or Canada
If you plan to operate your vehicle in for-
eign countries, please be aware that:

service facilities or replacement parts
may not be readily available,

unleaded gasoline for vehicles with
catalytic converters may not be avail-
able; the use of leaded fuels will
damage the catalysts,

gasoline may have a considerably
lower octane rating, and improper fuel
can cause engine damage.

17 Introduction
Operating safety
Operating safety
Proper use of the vehicle
Proper use of the vehicle requires that you
are familiar with the following information
and rules:

the safety precautions in this manual

the “Technical data” section in this
manual

traffic rules and regulations

motor vehicle laws and safety stan-
dards
Warning!G
Work improperly carried out on electronic
components and associated software could
cause them to cease functioning. Because
the vehicle’s electronic components are in-
terconnected, any modifications made may
produce an undesired effect on other sys-
tems. Electronic malfunctions could
seriously impair the operating safety of your
vehicle.
See an authorized Mercedes-Benz Light
Truck Center for repairs or modifications to
electronic components.
Other improper work or modifications on the
vehicle could also have a negative impact on
the operating safety of the vehicle.
Some safety systems only function while the
engine is running. You should therefore nev-
er turn off the engine while driving.
Warning!G
Heavy blows against the vehicle underbody
or tires/wheels, for example when running
over an obstacle, road debris or a pothole,
may cause serious damage and impair the
o per at i ng s a fet y of yo ur veh ic l e. I f y ou f ee l a
sudden significant vibration or ride distur-
bance, or you suspect that damage to your
vehicle has occurred, you should turn on
your hazard warning flashers, carefully slow
down, and drive with caution to an area
which is a safe distance from the road.
Inspect the vehicle underbody and
tires/wheels for possible damage. If the ve-
hicle appears unsafe, have it towed to the
nearest authorized Mercedes-Benz Light
Truck Center or other qualified maintenance
or repair facility for further inspection or re-
pairs.
Warning!G
Various warning labels are attached to your
vehicle. These warning labels are intended
to make you and others aware of various
risks. You should not remove any of these
warning labels unless explicitly instructed to
do so by information on the label itself. Re-
moval of any of these labels may cause you
and others to be unaware of certain risks
which may result in an accident and/or per-
sonal injury.

23 At a glance
Exterior view
ItemPage
1Tailgate124
Power tailgate*125
Cargo compartment

Loading instructions303

Cargo tie-down rings304

Hooks306

Expanding306

Cover blind312

Cargo net*313
Vehicle tool kit495
Spare wheel499
2Rear window defroster215
3Rear lamps509
4Fuel filler flap375
Refueling375
Fuel376,
563
ItemPage
5Exterior rear view mirrors
Adjusting52
Auto-dimming rear view
mirrors*211
Power folding*211
6Towing
Installing towing eye bolt542
7Tires and wheels385,
554
Checking tire inflation
pressure396
General information385
Flat tire523
Spare wheel499
8Hood379
Opening379
Engine oil381
Coolant382
ItemPage
9Windshield wipers63
Wiper blades, replacing520
Wiper blades, cleaning431
aWindshield
Cleaning with wiper fluid65
Cleaning431
bRoof rails297
Carriers*298
cPower tilt/sliding sunroof*253
dDoors
Locking and unlocking114
Opening and closing122
Locking/unlocking in an
emergency500
eFront lamps509
fHeadlamp cleaning system*210