Lexus HS250h 2011 Do-it-yourself maintenance / LEXUS 2011 HS250H OWNERS MANUAL (OM75037U)

471
4-3. Do-it-yourself maintenance
4
Maintenance and care
21RR FOG7. 5 ANo circuit
22FUEL OPN7. 5 ATrunk opener switch, fuel filler door
opener switch
23OBD7. 5 AOn-board diagnosis
24PWR SEAT FL30 ADriver’s side power seat
25FR FOG15 AFront fog lights
26PWR SEAT FR30 APassenger’s side power seat
27PSB30 APre-collision seat belts system
28WELCAB30 ANo circuit
29DOOR NO.125 APower door lock system
30SEAT HTR FL10 ADriver’s side seat heater
31SEAT HTR FR10 APassenger’s side seat heater
32RAD NO.27. 5 A
Navigation system, audio system, air
conditioning system, HUD, remote
touch
33PWR OUTLET15 APo w e r o u t l e t
34ECU-ACC10 ARear view mirror, air conditioning sys-
tem, audio system, navigation system
FuseAmpereCircuit

472
4-3. Do-it-yourself maintenance
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. ( P. 475)
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
●Do not modify the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near
the fuse box.
Doing so may cause electric shock, re sulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.

473
4-3. Do-it-yourself maintenance
4
Maintenance and care
Headlight aim (LED headlights)
■Vertical movement adjustment bolts
Adjustment bolt A
Adjustment bolt B
■ Before checking the headlight aim
Make sure the vehicle has a fu ll tank of gasoline 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.
■ Adjusting the headlight aim
Using a Phillips-head screw-
driver, turn bolt A in either
direction.
Remember the turning direction
and the number of turns.

474
4-3. Do-it-yourself maintenance
Turn bolt B the same number of
turns and in the same direction
as step 1.
If the headlight cannot be
adjusted using this procedure,
take the vehicle to your Lexus
dealer to adjust the headlight
aim.

475
4-3. Do-it-yourself maintenance
4
Maintenance and care
Light bulbs
You may replace the following bulbs by yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replacement
seems difficult to perform, contact your Lexus dealer.
For more information about replacing other light bulbs, contact your Lexus
dealer.
■ Preparing for light bulb replacement
Check the wattage of the light bulb to be replaced. ( P. 564)
■ Remove the engine compartment covers
 P. 4 2 9
■ Front bulb locations
Halogen headlights
Front side marker light Headlight low beam
Parking light
Front turn signal light
Front fog lightHeadlight high beam
and daytime running light

476
4-3. Do-it-yourself maintenance
LED headlights
■Rear bulb locations
Front fog light
Front turn signal light
Parking lightFront side marker light
Headlight high beam and
daytime running light
Rear turn signal light
Back-up light
License plate light

477
4-3. Do-it-yourself maintenance
4
Maintenance and care
Replacing light bulbs■ Headlight high beams and daytime running lights (halogen head-
lights)
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.
■ Headlight high beams and daytime running lights (LED headlights)
Turn the cover counterclockwise.

478
4-3. Do-it-yourself maintenance
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.
■ Headlight low beams (halogen headlights)
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.

479
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Front turn signal lights (halogen headlights)
Turn the bulb base counterclock-
wise.
Remove the light bulb.
■ Front turn signal lights (LED headlights)
Turn the bulb base counterclock-
wise.
Remove the light bulb.

480
4-3. Do-it-yourself maintenance
■Parking lights/front side marker lights (halogen headlights)
Turn the bulb base counterclock-
wise.
Remove the light bulb.
■ Parking lights (LED headlights)
Turn the bulb base counterclock-
wise.
Remove the light bulb.