2008 MERCEDES-BENZ G500 turn signal bulb

356 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Turn signal
front left
Auxiliary bulb
onThe left front turn signal lamp is mal-
functioning. A substitute bulb has been
brought into use.Replace the bulb as soon as possible
(
page 381).
Turn signal
front right
Auxiliary bulb
onThe right front turn signal lamp is mal-
functioning. A substitute bulb has been
brought into use.Replace the bulb as soon as possible
(
page 381).
Turn signal
rear left
Auxiliary bulb
onThe left rear turn signal lamp is malfunc-
tioning. A substitute bulb has been
brought into use.Replace the bulb as soon as possible
(
page 383).
Turn signal
rear right
Auxiliary bulb
onThe right rear turn signal lamp is malfunc-
tioning. A substitute bulb has been
brought into use.Replace the bulb as soon as possible
(
page 383).
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375
Practical hints
Replacing bulbs
 Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies are in good working order at all
times.
Correct headlamp adju stment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Light Truck Center for
headlamp adjustment.iIf the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with the
lights on should clear up the fogging.iSubstitute bulbs will be brought into use
when the following lamps malfunction:

Turn signal lamps

Tail lamps

Parking lamps

Rear fog lamp
Read and observe the messages in the
multifunction display (
page 352).
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376 Practical hints
Replacing bulbs
Front lampsRear lamps
LampType
1Additional turn signal
lampLED
2Locator lighting lampW6W
3Turn signal lamp1156 NA
4Side marker lampT4W
5Bi-Xenon headlamp:
Low and high beam1
1Bi-Xenon headlamp: Low beam and high beam use
the same D1S-35 W lamp. Do not replace the
Bi-Xenon bulbs yourself. Contact an authorized
Mercedes-Benz Light Truck Center.
D1S-35 W
Parking and standing
lampW5W
Blue vision
6Front fog lampH11 (55 W)
LampType
7High mounted brake
lampLED
8Turn signal lampPY 21 W
Brake and tail lampP21/5W
Tail, parking and
standing lampW5W
9Backup lampP21W
aLicense plate lampsC5W
bRear fog lampP21W
cSide marker lampT4W
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377
Practical hints
Replacing bulbs
Notes on bulb replacement

Only use 12-volt bulbs of the same type
and with the specified watt rating.

Switch lights off before changing a bulb
to prevent short circuits.

Always use a clean lint-free cloth when
handling bulbs.

Your hands should be dry and free of oil
and grease.

If the newly installed bulb does not
come on, contact an authorized
Mercedes-Benz Light Truck Center.
Have the LEDs and bulbs for the following
lamps replaced at an authorized
Mercedes-Benz Light Truck Center:

the additional turn signal lamps in the
exterior rear view mirrors

the high mounted brake lamp

the Bi-Xenon lamps

the locator lighting lamps in the
exterior rear view mirrors
Warning!G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before
changing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:

touch or move it when hot

drop the bulb

scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced at an autho-
rized Mercedes-Benz Light Truck Center.
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381
Practical hints
Replacing bulbs
7
Bulb
Pull bulb 7 out of its bulb socket.
Insert the new bulb into the bulb
socket.
Hold front fog lamp 5, insert bulb
socket 6 into front fog lamp 5, and
turn bulb socket 6 clockwise to its
stop.
Insert front fog lamp 5 and install and
tighten front fog lamp-securing
screws 3.
Install front fog lamp trim panel 2 and
the seal.
Install and tight en securing screws 1. Front turn signal lamp bulb
1 Securing screw
2 Turn signal lens
Loosen and remove securing
screws 1.
Remove turn signal lens 2. 3
Bulb
Press bulb 3 gently into the socket,
turn counterclockwise and remove it.
Press the new bulb gently into the
socket and turn clockwise until it
engages.
Reinstall turn signal lens 2.
Install and tighten securing screws 1.
iG55AMG:
Remove the protective grille before replacing the
bulbs.
iDo not overtighten securing screws 1.
Otherwise turn signal lens 2 could be damaged.
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383
Practical hints
Replacing bulbs
Reinstall side marker lamp housing
2.
Install and tight en securing screws 1.
Additional turn signal lamps
The additional turn signal lamps in the
exterior rear view mirrors have LEDs.
If a malfunction occurs or LEDs fail to
function, the entire turn signal unit must be
replaced. Have the turn signal unit
replaced at an authorized Mercedes-Benz
Light Truck Center. Locator lighting lamps
The locator lighting lamps in the exterior
rear view mirrors have bulbs.
Have the bulbs replaced at an authorized
Mercedes-Benz Light Truck Center.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
position
M (
page 117). Bulbs in tail lamp unit
Left tail lamp lens shown, right tail lamp
lens laterally reversed
1
Securing screw
2 Tail lamp lens
Loosen and remove securing
screws 1.
Remove tail lamp lens 2.
iDo not overtighten securing screws 1.
Otherwise side marker lamp housing 2 could
be damaged.
iG55AMG:
Remove the protective grille before replacing the
bulbs.

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384 Practical hints
Replacing bulbs
Left tail lamp unit shown, right tail lamp
unit laterally reversed
3Turn signal lamp bulb
4 Brake, tail, parking and standing lamp
bulb
5 Tail, parking and standing lamp bulb
Press gently onto respective
bulb 3,4 , or 5 and turn counter-
clockwise out of its bulb socket.
Press the new bulb gently into the bulb
socket and turn clockwise until it
engages.
Reinstall tail lamp lens 2.
Install and tighten securing screws 1. Rear fog lamp bulb/Backup lamp bulb
The following description applies to both,
the rear fog lamp and the backup lamp.
Rear fog lamp shown
1
Securing screw
2 Lamp lens
Loosen and remove securing
screws 1.
Remove lamp lens 2. 3
Bulb
Press gently onto bulb 3 and turn
counterclockwise out of its bulb
socket.
Press the new bulb gently into the bulb
socket and turn clockwise until it
engages.
Reinstall lamp lens 2.
Install and tight en securing screws 1.
iDo not overtighten securing screws 1.
Otherwise tail lamp lens 2 could be damaged.
iDo not overtighten securing screws 1.
Otherwise lamp lens 2 could be damaged.

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431
Index
Batteries
SmartKey (replacing) 374
Batteries, SmartKey Check lamp 103
Checking 103
Battery box Fuse box in 406
Battery discharged Jump starting 397
Battery, vehicle 394 Charging 396
Disconnecting 396
Messages in display 342–343
Reconnecting 396
Reinstalling 396
Removing 396
Bead 304
Block heater (Canada only) 310
Blocking rear door window operation 85
B-pillar 410
Brake fluid 266, 423 Message in display 344
Brake lamp bulbs, left and right 376
Brake lamp, high mounted 376
Brake lamps Messages in display 352 Brake pads
Message in display 345
Brakes 246 Warning lamp 326–327
Break-in period 244
Brush guard 373 Lowering 373
Raising and securing 373
Bulbs, replacing Additional turn signals 376
Backup lamps 376, 384
Brake lamps 376, 384
Front fog lamps 376, 380
Front lamps 376
Front turn signal lamps 376, 381
High beam lamps 376
High mounted brake lamp 376
License plate lamps 376, 385
Locator lighting lamps 376
Low beam lamps 376
Parking lamps 376, 378 Rear fog lamp 376, 384
Rear lamps 376
Rear turn signal lamps 376
Side marker lamps 376, 382
Standing lamps 376, 378
Tail lamp assemblies 376
Tail lamp unit 383
C
Call priority, Tele Aid 235
Calling up Maintenance service indicator display 313
Range (distance to empty) 158
Capacities Fuels, coolants, lubricants, etc. 420
Cargo area see Cargo compartment
Cargo compartment Expanding 206
Tailgate 105
Tie-down rings 209
Cargo compartment cover blind 214 Installing 214
Removing 214
Rolling out 214
Rolling up 214
Cargo compartment lamps 127
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