2007 Lexus GS350 Using the front audio system / LEXUS 2007 GS430/350 OWNER'S MANUAL (OM30A04U)

429
4-3. Do-it-yourself maintenance
4
Maintenance and care
Headlight aim
■Gauges
High beam vertical position
Low beam vertical position
High beam horizontal posi -
tion
Low beam horizontal position
■ A
djustment bolts
High beam horizontal adjust-
ment
High beam vertical adjust-
ment
Low beam adjustment bolt A
Low beam adjustment bolt B
■ Befor
e checking the headlight aim
Make sure the vehicle has a full ta nk of gas and the ar
ea around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.STEP1
STEP2
STEP3
STEP4

430
4-3. Do-it-yourself maintenance
■Adjusting the headlight aim
Low beam (vertical adjustment)
Using a Phillips-head screw-
driver, turn adjustment bolt A so
that the bubble is within the 2
center lines.
Remember the turning direction
and the number of turns.
Turn bolt B the same number of
turns and in the same direction
as step 1.
Low beam (horizontal adjustment)
Turn adjustment bolt A so that the re d line on the gauge is in the middle
of the “0” mark (within the blue lines to either side of the gaug\
e).
High beam (vertical and horizontal adjustment)
Turn each adjustment bolt in either dir
ection so that the bubble in
within the 2 center lines (vertical), an d the red line on the gauge is in
the middle of the “0” mark (within th e blue lines to either side of the
gauge) (horizontal).
If you feel that there is a large de
viation, have the headlight aim
adjusted at a Lexus dealer.
STEP1
STEP2

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P
. 507)
■ R
emove the engine compartment cover if necessary.
 P.
3 7 8
■ F
ront bulb locations
■Rear bulb locations
Parking light
Headlight high beam
Rear turn signal light Back-up light

432
4-3. Do-it-yourself maintenance
Replacing light bulbs
■Headlight high beam
Unplug the connector while push-
ing the lock release.
Turn the bulb base counterclock -
wise to remove it.
STEP1
STEP2

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Parking light
Turn the bulb base counterclock-
wise.
Remove the light bulb.
■ B
ack-up light
Open the trunk lid. Remove the
trunk handle and panel co
ver clips.
Partly remove the trunk panel
co
ver and turn bulb bases coun -
terclockwise.
STEP1
STEP2
STEP1
STEP2

434
4-3. Do-it-yourself maintenance
Remove the light bulb.
■ R
ear turn signal light
Open the trunk lid and remove the
co
ver.
Turn the bulb base counterclock -
wise.
Remove the light bulb.
STEP3
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
r

eplace it.
● Headlight lo
w beams (high-intensity discharge bulbs)
● F
og lights
●F
ront turn signal lights
●F
ront side marker lights
●Stop
/tail lights
●T
ail lights
●R
ear side marker lights
●High mounted stoplight
● License plate lights
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more inform ation i
n the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
ma
lfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up in side the headlight.
■LED light bulbs
The tail, tail/stop and high mounted stopligh ts co
nsist of a number of LEDs. If any
LEDs burn out, take your vehicle to your Lexus dealer to have the light replaced.
If two or more LEDs in a stoplight burn out, y
our vehicle may not conform to local
laws (SAE).
■High-intensity discharge (HID) headlights
If voltage to the high-intensity discharge bu l
bs is insufficient, the light may not come
on, or may go out temporarily. The high-i ntensity discharge bulbs will come on
when normal power is restored.

436
4-3. Do-it-yourself maintenance
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately after turn-
ing off the headlights. 
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. Hold the bulb by
the plastic or metal portion. 
If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failing to do so may
result in heat damage, fire, or water ente ring the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble lig ht bulbs, connectors, electric circuits
or component parts. 
Doing so may result in serious injury due to electric shock.
■High-intensity discharge (HID) headlights
●Contact your Lexus dealer before replac ing high-intensity discharge headlights
(including light bulbs).
●Do not touch the high-intensity discharge headlight's high voltage socket when
the headlights are turned on. An extremely high voltage of 20000V will be dis-
charged and could result in serious injury or death by electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.