2007 MERCEDES-BENZ GL450 Owner's Manual

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

9
Product information

Introduction
Product information
Please observe the following in your own
best interest:
We recommend using Genuine
Mercedes-Benz Parts as well as conversion
parts and accessories explicitly approved
by us for your vehicle model.
We have tested these parts to determine
their reliability, safety and special
suitability for Mercedes-Benz vehicles.We are unable to make an assessment for
other products and therefore cannot be
held responsible for them, even if in indi-
vidual cases an official approval or authori-
zation by governmental or other agencies
should exist. Use of such parts and acces-
sories could adversely affect the safety,
performance or reliability of your vehicle.
Please do not use them.Genuine Mercedes-Benz Parts as well as
conversion parts and accessories
approved by us are available at your
authorized Mercedes-Benz Light Truck
Center where you will receive comprehen-
sive information, also on permissible tech-
nical modifications, and where proper
installation will be performed.

10 Introduction
Operator’s Manual
This Operator’s Manual contains a great
deal of useful information. We urge you to
read it carefully and familiarize yourself
with the vehicle before driving.
For your own safety and longer service life
of the vehicle, we urge you to follow the in-
structions and warnings contained in this
manual. Ignoring them could result in dam-
age to the vehicle or personal injury to you
or others. Vehicle damage caused by fail-
ure to follow instructions is not covered by
the Mercedes-Benz Limited Warranty.
Your vehicle may have some or all of the
equipment described in this manual.
Therefore, you may find explanations for
optional equipment not installed in your
vehicle. If you have any questions about
the operation of any equipment, your
authorized Mercedes-Benz Light Truck
Center will be glad to demonstrate the
proper procedures.We continuously strive to improve our
product, and ask for your understanding
that we reserve the right to make changes
in design and equipment. Therefore, infor-
mation, illustrations and descriptions in
this Operator’s Manual might differ from
your vehicle.
Optional equipment is also described in
this manual, including operating instruc-
tions wherever necessary. Since they are
special-order items, the descriptions and
illustrations herein may vary slightly from
the actual equipment of your vehicle.
If there are any equipment details that are
not shown or described in this Operator’s
Manual, your authorized Mercedes-Benz
Light Truck Center will be glad to inform
you of correct care and operating proce-
dures.
The Operator’s Manual and Maintenance
Booklet are important documents and
should be kept with the vehicle.Service and warranty information
The Service and Warranty Information
Booklet contains detailed information
about the warranties covering your
Mercedes-Benz, including:

New Light Truck Limited Warranty

Emission System Warranty

Emission Performance Warranty

California, Maine, Massachusetts, and
Vermont Emission Control System
Warranty
(California, Maine, Massachusetts, and
Vermont only)

State Warranty Enforcement Laws
(Lemon Laws)

11 Introduction
Operator’s Manual
Important notice for California retail
buyers and lessees of Mercedes-Benz
automobiles
Under California law you may be entitled to
a replacement of your vehicle or a refund
of the purchase price or lease price, if
Mercedes-Benz USA, LLC and/or its
authorized repair or service facilities fail to
fix one or more substantial defects or mal-
functions in the vehicle that are covered by
its express warranty after a reasonable
number of repair attempts. During the
period of 18 months from original delivery
of the vehicle or the accumulation of
18 000 miles (approximately 29 000 km)
on the odometer of the vehicle, whichever
occurs first, a reasonable number of repair
attempts is presumed for a retail buyer or
lessee if one or more of the following oc-
curs:(1) the same substantial defect or mal-
function results in a condition that is
likely to cause death or serious bodily
injury if the vehicle is driven, that de-
fect or malfunction has been subject to
repair two or more times, and you have
directly notified Mercedes-Benz USA,
LLC in writing of the need for its repair,
(2) the same substantial defect or mal-
function of a less serious nature than
category (1) has been subject to repair
four or more times and you have direct-
ly notified us in writing of the need for
its repair, or(3) the vehicle is out of service by reason
of repair of the same or different sub-
stantial defects or malfunctions for a
cumulative total of more than
30 calendar days.
Written notification should not be sent to a
dealer, it should be addressed to
Mercedes-Benz USA, LLC
Customer Assistance Center
One Mercedes Drive
Montvale, NJ 07645-0350

12 Introduction
Operator’s Manual
Maintenance
The Maintenance Booklet describes all the
necessary maintenance work which should
be performed at regular intervals.
Always have the Maintenance Booklet with
you when you take the vehicle to your
authorized Mercedes-Benz Light Truck
Center for service. The service advisor will
record each service in the booklet for you.Roadside Assistance
The Mercedes-Benz Roadside Assistance
Program provides factory-trained technical
help in the event of a breakdown. Calls to
the toll-free Roadside Assistance number
1-800-FOR-MERCedes (in the USA)
1-800-387-0100 (in Canada)
will be answered by Mercedes-Benz
Customer Assistance Representatives
24 hours a day, 365 days a year.
Roadside Assistance will be provided in
accordance with standard program guide-
lines which include providing service to the
vehicle up to a reasonable distance from a
paved roadway. We will make every effort
to assist in a breakdown situation, howev-
er, the accessibility of your vehicle will be
determined by our authorized
Mercedes-Benz Light Truck Center techni-
cian or the tow service provider on a
case-by-case basis and may be a factor in
our ability to respond.Additional charges may be applicable for a
breakdown location determined not to be a
reasonably accessible roadside location as
determined by our authorized technician
and tow service provider.
For additional information refer to the
Mercedes-Benz Roadside Assistance
Program brochure in your vehicle literature
portfolio.

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.

14 Introduction
Operator’s Manual
Warning!G
This Sport Utility Vehicle is designed for both on-road and off-road use. It can go places and perform tasks for which conventional 2-wheel drive
passenger cars are not intended. This vehicle will handle and maneuver differently from conventional passenger cars in driving conditions which
may occur on streets, highways and off-road use.
This vehicle has a higher ground clearance and a higher center of gravity than many passenger cars. As with other vehicles of this type, if you make
sharp turns at excessive speeds or abrupt maneuvers, the vehicle may roll over or may go out of control and crash. Utility vehicles have a signifi-
cantly higher rollover rate than other types of vehicles. Failure to operate this vehicle safely may result in an accident, rollover of the vehicle, and
severe or fatal injury.
Before you start to drive this vehicle, read the Operator’s Manual. Take time to become familiar with the driving characteristics of this vehicle. Be
sure you are familiar with all vehicle controls. Learn how your vehicle handles on different road surfaces. Do not attempt sharp turns at excessive
speeds or abrupt maneuvers or other unsafe driving actions that can cause loss of vehicle control. When driving off-road or working the vehicle
hard, do not overload it. And, always wear your seat belts at all times. In a rollover crash, an unbelted person is significantly more likely to die than
a person wearing a seat belt.

15 Introduction
Where to find it
Where to find it
This Operator’s Manual is designed to pro-
vide comprehensive support information
for you, the vehicle operator. Each section
has its own reference color.
At a glance
Here you will find an overview of all the
controls that can be operated from the
driver’s seat.
Getting started
Here you will find all the information you
need for your first drive. You should read
this section first if this is your first
Mercedes-Benz vehicle or if you are rent-
ing or borrowing this vehicle.
Safety and Security
Here you will find descriptions of the safety
and security features of your vehicle.
Controls in detail
Here you will find detailed information
about the equipment installed on your ve-
hicle. This section expands on the “Getting
started” section and also describes techni-
cal innovations. If you are already familiar
with the basic functions of your vehicle,
this section will be of particular interest to
you.
Operation
Here you will find all the information you
need for the proper operation of your vehi-
cle.
Practical hints
This section provides fast assistance for
dealing with problems you may encounter.
Technical data
All important technical data for your vehi-
cle can be found in this section.
Indexes
The table of contents and the index are de-
signed to help you find information quickly
and easily.
The following publications are part of your
vehicle documentation:

this Operator’s Manual

the Maintenance Booklet
Separate operating instructions will be
provided as required depending on the
equipment options installed in your vehi-
cle.