Lexus GS350 2011 Owner's Manual

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Adjustment bolts
High beam horizontal adjust-
ment
High beam vertical adjust-
ment
Low beam adjustment bolt A
Low beam adjustment bolt B
■ Before checking the headlight aim
Make sure the vehicle has a full tank of gas and the area 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

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Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■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 red line on the gauge is in the middle
of the “0” mark (within the blue lines to either side of the gauge).
High beam (vertical and horizontal adjustment)
Turn each adjustment bolt in either direction so that the bubble in
within the 2 center lines (vertical), and the red line on the gauge is in
the middle of the “0” mark (within the blue lines to either side of the
gauge) (horizontal).
If you feel that there is a large deviation, have the headlight aim
adjusted at a Lexus dealer.

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
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. 5 9 8 )
■ Remove the engine compartment cover if necessary
→ P. 4 5 0
■ Front bulb locations
■ Rear bulb locations
Parking light
Headlight high beam and
daytime running light
Rear turn signal light Back-up light

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Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Replacing light bulbs■ Headlight high beam and daytime running light
Unplug the connector while
depressing the lock release.
Turn the bulb base counterclock-
wise to remove it.
STEP1
STEP2

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Parking light
Turn the bulb base counterclock-
wise.
Remove the light bulb.
STEP1
STEP2

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Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Back-up light
Open the trunk lid. Remove the
trunk handle and panel cover clips.
Partly remove the trunk panel
cover and turn the bulb bases
counterclockwise.
Remove the light bulb.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Rear turn signal light
Open the trunk lid and remove the
cover.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
STEP1
STEP2
STEP3

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Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
replace it.
● Headlight low beams (high- intensity discharge bulbs)
● Fog lights
● Front turn signal lights
● Front side marker lights
● Side turn signal lights
● Tail/stop lights
● Tail lights
● Rear side marker lights
● High mounted stoplight
● License plate lights
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more information in the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
malfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up inside the headlight.
■LED light bulbs
The side turn signal lights, rear side marker lights, tail lights, tail/stop lights and high
mounted stoplights consist of a number of LEDs. If any of the 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, your vehicle may not conform to local
laws (SAE).

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4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■High-intensity discharge (HID) headlights
If voltage to the high-intensity discharge bulbs is insufficient, the light may not come
on, or may go out temporarily. The high-intensity discharge bulbs will come on
when normal power is restored.
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 entering the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
●Do not attempt to take apart or repair the low beam discharge headlight bulbs,
connectors, power supply circuits, or related components.
Doing so could result in electric shock and death or serious injury.
■High-intensity discharge (HID) headlights
●Contact your Lexus dealer before replacing 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 20000 V will be discharged and could result in
death or serious injury by electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.

When trouble arises5
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5-1. Essential informationEmergency flashers.............. 520
If your vehicle needs to be towed ............................. 521
If you think something is wrong ..................................... 530
Fuel pump shut off system ...................................... 531
Event data recorder .............. 532 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds..................................... 534
If a warning message is displayed................................ 544
If you have a flat tire (Vehicles with standard
tires) ........................................ 557
If you have a flat tire (Vehicles with run-flat
tires) ......................................... 567
If the engine will not start .................................. 568
If the shift lever cannot be shifted from “P”.................... 569
If you lose your keys .............. 570
If the electronic key does not operate properly ................... 571
If the 12 volt battery is discharged ............................. 574
If your vehicle overheats ..... 578
If the vehicle becomes stuck......................................... 581
If your vehicle has to be stopped in an
emergency ............................ 582