Page 9 of 601

Contents
Replacing wiper blades ...................... 516
Front wiper blades ....................... 516
Rear wiper blade .......................... 517
Flat tire .............................................. 519
Preparing the vehicle.................... 519
Mounting the spare wheel ............ 520
Bleeding the fuel system
(diesel engine only) ............................ 527
Battery ............................................... 528
Disconnecting, removing,
reinstalling and
reconnecting the battery .............. 530
Charging the battery .................... 535
Jump starting ..................................... 536
Towing the vehicle ............................. 538
Installing towing eye bolt.............. 540
Stranded vehicle .......................... 542
Fuses ................................................. 543
Fuse box in engine compartment . 544
Fuse box in cargo compartment ... 544
Fuse box in
passenger compartment .............. 545
Emergency engine shut-down ...... 545
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, GL 550............................ 552
Engine................................................ 553
Rims and tires.................................... 555
Same size tires ............................. 556
Minispare wheel ........................... 558
Electrical system ............................... 559
Main Dimensions ............................... 560
Weights.............................................. 561Fuels, coolants, lubricants ................. 562
Capacities .................................... 562
Engine oils ................................... 564
Engine oil additives ...................... 564
Air conditioning refrigerant .......... 564
Brake fluid.................................... 564
Premium unleaded gasoline
(gasoline engine).......................... 565
Fuel requirements ........................ 565
Gasoline additives
(gasoline engine).......................... 566
Coolants ...................................... 567
Windshield washer system and
headlamp cleaning system*......... 569
Index................................................. 571
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Page 544 of 601

543 Practical hints
Fuses
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and sys-
tems secured by that fuse will stop operat-
ing.If a newly inserted fuse blows again, have
the cause determined and rectified by an
authorized Mercedes-Benz Light Truck
Center.
A fuse chart explains the fuse allocation
and fuse amperages. It is located in the
cargo compartment with the vehicle tool
kit (
page 490).
The electrical fuses are located in different
fuse boxes:
Fuse box in engine compartment
(
page 544)
Fuse box in cargo compartment
(
page 544)
Fuse box in passenger compartment
(
page 545)Before replacing fuses:
Apply parking brake (page 67).
Make sure the automatic transmission
is set toP (
page 191).
The gear position indicator in the multi-
function display should be on
P.
Turn off all electrical consumers.
Turn off the engine (page 41).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Open the driver’s door (this puts
the starter switch in position0,
same as with the SmartKey re-
moved from the starter switch). The
driver’s door then can be closed
again.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than ap-
proved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied by an au-
thorized Mercedes-Benz Light Truck Center.
iA blown fuse must be replaced by an appro-
priate spare fuse (recognizable by its color or the
fuse rating given on the fuse) of the amperage
recommended in the fuse chart. Any
Mercedes-Benz Light Truck Center will be glad to
advise you on this subject.
164.boo Seite 543 Freitag, 30. März 2007 12:54 12
Page 545 of 601
544 Practical hints
Fuses
Fuse box in engine compartment
The fuse box is located on the passenger
side of the engine compartment.
Open the hood (page 378).
Fuse box GL 450 (GL 320 CDI, GL 550
similar)
1Fuse box cover
2Clamps
Pull clamps2 in direction of arrow.
Lift fuse box cover1 up.
Install fuse box cover in reverse order.
Close the hood after checking or re-
placing fuses (
page 379).
Fuse box in cargo compartment
The fuse box is located in the cargo com-
partment behind the passenger side trim
panel.
1Lock
2CoverRemoving/installing cover
Open the tailgate (page 122).
Insert a suitable object such as a coin
into the slot of lock1 (
page 544).
Turn lock1 counterclockwise by 90°
in direction of arrow.
Remove cover2.
Install cover2 in reverse order.
!The fuse box cover must be installed
properly to prevent moisture and/or dirt from
entering the fuse box and possibly impairing fuse
operation.
164.boo Seite 544 Freitag, 30. März 2007 12:54 12
Page 580 of 601

579 Index
Fuel consumption statistics
Since last reset 185
Since start 184
Fuel filler flap 374
Locking/unlocking 374
Opening 374
Opening in an emergency 497
Fuel tank
Capacity 563
Filler flap 374
Fuels, coolants, lubricants etc. 562
Fuses 543
Fuse box in cargo compartment 544
Fuse box in engine compartment 544
Fuse box in passenger
compartment 545
Fuse chart 490
Replacing 543G
Garage door opener 338
Gasoline see Fuel
GAWR 416
Gear range
Automatic transmission 189, 197
Limiting 197
Shifting into optimal 199
Gear selector lever 25, 56, 189
Cleaning 433
Gearshift pattern for automatic
transmission 189
Messages in the multifunction
display 459
Position indicator 192, 197
Transmission position 192
Global locking/unlocking see Key,
SmartKey
Glove box 315
Good visibility 208Gross 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 149
Head restraints 46, 133
Active head restraint 90, 133
Front seats, Adjusting 46
Rear seats 91
Rear seats, Adjusting 135
Rear seats, Removing and
installing 136
Headlamp aim
Adjusting 514
Headlamp cleaning system* 208, 383
Reservoir capacity 563
Headlamp shut-off delay see Delayed
shut-off, Exterior lamps
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