2008 MERCEDES-BENZ GL550 high beam

514 Practical hints
Replacing bulbs
License plate lamp
1License plate lamp cover
2Screws
Loosen screws2.
Remove license plate lamp cover1.
Replace the tubular bulb.
Reinstall license plate lamp cover1.
Retighten screws2.
Adjusting headlamp aim
VVertical centerline
HHeadlamp mounting height, measured
from the centerCorrect headlamp adjustment is extremely
important. To check and readjust a head-
lamp, follow the steps described:
Park the vehicle on a level surface
25 feet (7.6 m) from a vertical test
screen or wall.
Switch the headlamps on
(
page 143).
If the beam does not show a beam pattern
as indicated in the figure left, then follow
the steps below:
Open hood (page 378).
iHigh beam adjustments simultaneously aim
the low beam.
Vehicle should have a normal tailgate load.
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580 Index
Headlamps
Automatic headlamp mode 144
Bi-Xenon* 477, 508
Cleaning lenses 429
Cleaning system* 208, 383
Halogen 507
High beam see High beam flasher
High beam see High beam headlamps
Light sensor, Messages in the
multifunction display 477
Low beam see Low beam headlamps
Manual headlamp mode 144
Messages in the multifunction
display 477, 478, 479, 480, 481,
482
Replacing bulbs 504, 505
Switch 61, 143
Heated seats see Seat heating*
Heated steering wheel* 327
Height adjustment
Vehicle level control (Vehicles with Air
suspension program) 281
Vehicle level control (Vehicles with
enhanced Off-road Package*) 283High beam flasher 61, 147
High beam headlamps
Indicator lamp 29
Messages in the multifunction
display 478
Replacing bulbs 505, 507, 508
Switching on 61, 147
High mounted brake lamp 505
Hill start assist system 196
Hinged quarter windows* see
Power windows
Hood 378
Messages in the multifunction
display 474
Opening 378
Hooks
Loading 304
Horn 25
HVAC see Climate control or
automatic climate control (3-zone)*
Hydroplaning 352I
Identification labels see Labels
Ignition 42, 44, 57
Immobilizer 109
Indicator lamps see Lamps, Indicator and
warning
Infant and child restraint systems see
Children in the vehicle
Inflation pressure see Tires,
Inflation pressures
Information button see Tele Aid
Infrared reflecting windshield* 344
Inside door handle 120
Instrument cluster 26, 28, 152
Illumination brightness 153
Lamps 436
Messages in display see Multifunction
display messages
Multifunction display 155
Outside temperature indicator 153
Selecting language 172
Instrument lighting see Instrument cluster,
Illumination brightness
Instrument panel see Instrument cluster
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582 Index
Kickdown 196
Kilopascal 416
L
Labels 550
Certification 550
Emission control information 551
Engine number 551
Paintwork code 550
Vehicle Identification Number
(VIN) 550
Lamp sensor see Light sensor
Lamps, exterior 505
Front 505
Light sensor, Messages in the
multifunction display 477
Messages in display 477
Messages in the multifunction
display 477, 479, 481
Rear 505
Switch 143Lamps, indicator and warning
ABS 27, 436
Adaptive Damping System
(ADS)* 279
Alarm system 110
Battery (SmartKey with
KEYLESS-GO*) 119
Battery (SmartKey) 114
Brakes 27, 437, 438
Center console 31, 32, 447
CHECK ENGINE 29, 439, 440
Differential locks* 205
Distance warning lamp* 263
Downhill Speed Regulation 274
Engine diagnostics 29, 439, 440
ESP
®27, 441
Fog lamps, Front/rear 143
Front passenger front air bag off 31,
32, 80
Fuel reserve 29, 446
High beam headlamps 29
Instrument cluster 26, 28, 436, 437,
438, 439, 440, 441, 442, 443, 444,
446
Off-road driving program 278
Parktronic* 290Preglow indicator, Diesel engine 29
Seat belt telltale 29, 89, 442
Seat belts 443
Seat heating* 138
Seat ventilation* 140
SRS 29, 74, 89, 446
Turn signals 27
Vehicle level control 281, 283
Language, Setting 172
LATCH-type child seat anchors see
Children in the vehicle
Layout of poly-V-belt drive
(GL 320 CDI) 552
Layout of poly-V-belt drive
(GL 450, GL 550) 552
Leather upholstery*, Cleaning and care
of 434
Lever for cruise control 255
License plate lamps 514
Messages in the multifunction
display 479
Replacing bulbs 505, 514
Light alloy wheels, Cleaning 432
Light sensor
Messages in the multifunction
display 477
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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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