2008 MERCEDES-BENZ GL450 wiper

432 Operation
Vehicle care
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light al-
loy wheels.Plastic and rubber parts
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution.
Wipe with a cloth moistened in a
lukewarm solution.
The surface may temporarily change
color. If this is the case, wait for it to
dry.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows and the power
tilt/sliding sunroof* or rear panorama roof with
hard objects such as an ice scraper or ring.
Doing so may damage the windows.
!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an ex-
tended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased
corrosion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
Warning!G
Do not use cleaners or cockpit care sprays
containing solvents to clean the cockpit or
the steering wheel. Cleaners containing sol-
vents will make the surface porous and vehi-
cle occupants could suffer serious injuries
from plastic parts coming loose in the event
of air bag deployment.

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435 Practical hints
What to do if …
Where will I find ...?
Unlocking/locking in an emergency
Resetting activated head restraints
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Bleeding the fuel system
(diesel engine only)
Battery
Jump starting
Towing the vehicle
Fuses
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516 Practical hints
Replacing wiper blades
Front wiper blades
Removing
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0
(
page 44).
Fold the wiper arms forward until they
engage.
1Wiper blade
2Cover
3Attachment
4Tab
5Removing
Press tabs4 together and tilt wiper
blade1 to detach tabs4 on both
recesses of attachment3.
Wiper blade1 is released on one end.
Maintaining its tilted position, slide
wiper blade1 out of attachment3 in
direction of arrow5.
Warning!G
For safety reasons, switch off wipers and
remove SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status
0) before replacing a wiper blade.
Otherwise the motor could suddenly turn on
and cause injury.
Warning!G
Wiper blades are components that are sub-
ject to wear and tear. Replace the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!Never open the hood when the wiper arms
are folded forward.
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
Do not allow the wiper arms to contact the wind-
shield glass without a wiper blade inserted.
Make sure the wiper blades are properly
installed. Improperly installed wiper blades may
cause windshield damage.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Light Truck Center.
!Do not pull on the wiper blade inserts. They
could tear.
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517 Practical hints
Replacing wiper blades
Installing
1Installing
2Tab
3Attachment
4Guide tab
5Cover
Slide the wiper blade into
attachment3 in direction of
arrow1.
Make sure guide tab4 will be placed
under cover5 when fully inserting the
wiper blade into attachment.
Let tab2 latch into both recesses of
attachment3.
Check if the wiper blade is securely
fastened.
Fold the wiper arm backward to rest on
the windshield.
Make sure you hold on to the wiper arm
when folding it back.
Rear wiper blade
Warning!G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status
0) before replacing a wiper blade.
Otherwise the motor could suddenly turn on
and cause injury.
!Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the rear
window.
Do not allow the wiper arm to contact the rear
window glass without a wiper blade inserted.
Make sure the wiper blade is properly installed.
Improperly installed wiper blades may cause
rear window damage.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Light Truck Center.
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518 Practical hints
Replacing wiper blades
Removing
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0
(
page 44).
Fold wiper arm1 away from the rear
window until it engages.
1Wiper arm
2Wiper blade
Turn wiper blade2 to form a right
angle with wiper arm1 as shown.
Hold wiper arm1 and disengage wip-
er blade2 by carefully sliding it in
direction of arrow.
Remove wiper blade2.
Installing
1Wiper arm
2Wiper blade
Insert wiper blade2 into wiper
arm1.
Hold wiper arm1 and engage wiper
blade2 by pushing it in direction of
arrow until it locks into place.
Check whether the wiper blade is
securely fastened.
Fold the wiper arm to rest on the rear
window.
Make sure to hold on to the wiper when
folding the wiper arm back.
!Do not pull on the wiper blade insert. It
could tear.
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581 Index
Instruments and controls see Cockpit
Interior lighting 149
Delayed shut-off 177
Interior rear view mirror 51
Antiglare positions 208
Auto-dimming mirrors* 208
Interior storage spaces see
Storage compartments
Intermittent wiping
Windshield wipers 63
J
Jack 492, 493
Lifting the vehicle 520
Jump starting 536
K
Key, Mechanical 496
Key, SmartKey 112
Batteries 120, 502
Battery check lamp 112
Checking battery condition 120
Closing the power windows
(Convenience closing feature) 250
Closing the tilt/sliding sunroof*
(Convenience closing feature) 250Closing, Power tailgate* 126
Factory setting 114
Locking/unlocking 40, 70, 112
Locking/unlocking, Global
setting 114
Loss of 120
Messages in the multifunction
display 476
Opening the power windows
(Summer opening feature) 249
Opening the tilt/sliding sunroof*
(Summer opening feature) 249
Remote control 112
Replacing batteries 502
Selective setting 114
Starter switch positions 42
Starting the engine 56
Turning off the engine 69
Key, SmartKey with KEYLESS-GO*
Batteries 120, 502
Battery check lamp 115
Checking battery condition 120
Closing the power windows
(Convenience closing feature) 250Closing the tilt/sliding sunroof*
(Convenience closing feature) 250
Closing/locking, Power
tailgate* 127
Factory setting 118
Important notes 117
Locking/unlocking 41, 70, 115
Locking/unlocking, Global
setting 118
Loss of 120
Messages in the multifunction
display 475, 476
Opening the power windows
(Summer opening feature) 249
Opening the tilt/sliding sunroof*
(Summer opening feature) 249
Remote control 115
Replacing batteries 502
Selective setting 119
Start/stop button 43
Starter switch positions 42, 43
Starting the engine 57
Turning off the engine 69
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587 Index
Rear lamps see Tail lamps
Rear panorama roof, Sunshade 212
Rear seat head restraints see
Head restraints
Rear towing eye 541
Rear view camera* 293
Rear view mirrors see Mirrors
Rear window defroster 212
Rear window wiper/washer 64
Rear windows see Power windows
Rear wiper blade 517
Recommended tire inflation
pressure 417
Recovery services, Stolen vehicle
(Tele Aid) 338
Refrigerant, Air conditioning 564
Refueling 374
Regular checks 376
Reminder, Seat belt see Seat belts, Telltale
Remote control
SmartKey 112
SmartKey with KEYLESS-GO* 115
Remote door unlock, Tele Aid 337Replacing bulbs 504
Additional turn signals, Exterior rear
view mirrors 511
Backup lamps 504, 505, 511
Brake lamps 504, 505, 511
Corner-illuminating front fog
lamps* 504, 505, 510
Fog lamp, Rear 504, 505, 511
Fog lamps, Front 504, 505, 510
High beam headlamps 504, 505, 508
License plate lamps 504, 505, 514
Low beam headlamps 504, 505, 507
Parking/standing lamps 504, 505,
509, 511, 513
Side marker lamps, Front 504, 505,
507, 510
Side marker lamps, Rear 504, 505,
511, 513
Tail lamps 504, 505, 511, 513
Turn signal lamps, Front 504, 505,
509
Turn signal lamps, Rear 504, 505,
511, 513Reporting safety defects 19
Research Octane Number see RON
Reset button, In instrument cluster 169
Reset tool
Active head restraints,
Depository 500
Residual heat and ventilation 225, 241
Reverse gear position, Automatic
transmission 189
Rims 417, 555
Roadside Assistance 12
Roadside Assistance button see Tele Aid
RON 375, 565
Roof rails 295
Rubber parts, Cleaning 432
Run Flat Indicator (Canada only) 396
S
Safety
Driving safety systems 101
Occupant safety 74
Reporting safety defects 19
Safety belts see Seat belts
Satellite radio* 164
Scissors-type vehicle jack 492, 493
Seat belt force limiter 89
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594 Index
Vehicle status message memory
menu 167
Vehicle tool kit 490
Vehicle washing 427
VIN 551
Voice control system*
Button on multifunction steering
wheel 30, 156
Hands-free microphone 34
W
Warning indicators
Parktronic* 290
Warning lamps see Lamps, Indicator and
warning
Warning sounds
Distance warning function* 272
Distronic* 263
Exterior lamps 143
Parking brake 60
Parktronic* 292
Seat belt telltale 86Warranty coverage 10, 549
Washer fluid see Windshield washer fluid
Washer reservoir level 569
Washing the vehicle 425
Wear pattern, Tires 419
Weights, Vehicle 561
Wheel
Bolts 492
Change 520
Removing 524
Spare 495, 520
Tightening torque 526
Wheel, Tires and 384
Wheels
Sizes 556
Window curtain air bags 80
Windows see Power windows
Windows, cleaning 431
Windshield
Cleaning 431
Cleaning wiper blades 431
Cleaning, Windshield washer fluid 64
Defogging 222, 237
Infrared reflecting* 344
Washer fluid 383, 563, 569Windshield washer fluid
Messages in the multifunction
display 483
Mixing ratio 569
Refilling 383
Reservoir level 383
Wiping with 64
Windshield washer system 383, 569
Windshield wipers 62
Cleaning wiper blades 431
Fast continuous wiping 63
Fast intermittent wiping 63
Rear window wiper/washer 64
Replacing wiper blades 516
Slow continuous wiping 63
Slow intermittent wiping 63
Winter driving 420
Snow chains 421
Tires 420
Winter driving instructions 353
Winter tires 420
Wood trims, cleaning 434
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