headlight Lexus HS250h 2010 Operating the lights and windshield wipers / LEXUS 2010 HS250H (OM75006U) Owner's Manual

197
2-3. Operating the lights and windshield wipers
2
When driving
■The windshield wipers and wa sher can be operated when
The “POWER” switch is in ON mode.
■Effects of vehicle speed on wiper operation (vehicles with rain-sensing wind -
shield wipers)
Even when the wipers are not in AUTO mode, wiper operation varies depending
on v
ehicle speed when the washer is being used (delay until drip prevention wiper
sweep occurs).
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual operation
The wipers will automatically
operate a couple of times after
the washer squirts. 
(After operating several times,
the wiper
s operate one more
time after a short delay to pre -
vent dripping.)
If the headlights are on, the
headlight
cleaners will operate
once. ( P. 2 0 0 )

200
2-3. Operating the lights and windshield wipers
Headlight cleaner switch
: If equipped
■The headlight cleaners can be operated when
The “POWER” switch is in ON mode an d the
headlight switch is turned on.
■Windshield washer linked operation
●When the windshield washer is operated with the “POWER” switch in ON
mode and the headlights on, the he adlight cleaners will operate once. 
(  P. 1 9 5 )
●From the second time the windshield wa sher is operated, the headlight cleaner
will not operate in sync with the windshield washer. 
(Turning the “POWER” switch to OFF or the lo
w beam headlights off resets the
headlight cleaner synchronization mode.)
NOTICE
■When the washer fluid tank is empty
Do not press the switch continually as the washer fluid pump may overheat.
Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.

223
2-4. Using other driving systems
2
When driving
NOTICE
■In the following situations, the LKA will not work, or will not perform reliably:
●When lane markers are interrupted or are not present, such as before a tollbooth.
●When lane markers are only on one side of the road.
●When driving on a sharp curve.
●When lanes are extremely narrow or extremely wide.
●When the vehicle leans to one side an unusual amount due to a heavy load or
improper tire inflation pressure.
●When the following distance between your vehicle and the vehicle ahead is
extremely short.
●When the lane markers are broken, “Botts’ dots”, or “Raised pavement marker”.
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When driving on a particularly brig ht road surface, such as concrete.
●When driving on a road surface that is bright due to reflected light.
●When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel.
●When sunlight or the headlights of oncoming vehicles are shining directly into the
camera lens.
●When driving on roads that are branching or merging.
●When pavement lane markers are difficult to see due to rain, snow, fog, etc.
●When driving on a road surface that is wet due to rain, previous rainfall, standing
water, etc.
●When the vehicle experiences strong up-a nd-down motion such as when driving
on an extremely rough road or on a seam in the pavement.
●When headlight brightness is reduced du e to dirt on the lenses, or when the
headlights are misaligned.
●When driving with a strong crosswind.

Maintenance and care4
401
4-1. Maintenance and careCleaning and protecting 
the vehicle exterior............ 402
Cleaning and protecting 
the vehicle interior .............. 406
4-2. Maintenance Maintenance 
requirements ........................ 409
General maintenance ............ 411
Emission inspection and 
maintenance (I/M) 
programs................................. 415 4-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions ............................ 416
Hood ........................................... 419
Positioning a floor jack ......... 420
Engine compartment ........... 422
12-volt battery ........................ 433
Tires............................................ 437
Tire inflation pressure........... 445
Wheels ...................................... 448
Air conditioning filter ........... 450
Electronic key battery.......... 453
Checking and replacing 
fuses ........................................ 455
Headlight aim 
(LED headlights) .................. 467
Light bulbs ................................ 469

412
4-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal
• The accelerator pedal should move smoothly (without uneven pedal
effort or catching).
Brake pedal
• Does the brake pedal move
smoothly?
• Does the brake pedal have appro- priate clearance from the floor?
( P. 5 5 4 )
• Does the brake pedal have the cor- rect amount of free play? 
(  P. 5 5 4 )
Brakes
• The vehicle should not pull to one
side when the brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get too close to the floor when the brakes
are applied.
Head restraints• Do the head restraints move
smoothly and lock securely?
Hybrid transmission “Park” mecha-
nism• Can the vehicle be held securely on an incline with the shift position
in P?
Indicators/buzzers• Do the indicators and buzzers function properly?
Lights
• Do all the lights come on?
• Are the headlights aimed cor-rectly? ( P. 4 6 7 )

417
4-3. Do-it-yourself maintenance
4
Maintenance and care
ItemsPa r t s a n d t o o l s
Engine oil level (P. 4 2 4 )
• “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 4 5 5 )• Fuse with same amperage rating as
original
Headlight aim ( P. 4 6 7 )• Phillips-head screwdriver
Light bulbs( P. 4 6 9 )
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
•Flathead screwdriver
•Wrench
Radiator and condenser (P. 4 3 0 )
Tire inflation pressure ( P. 4 4 5 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( P. 4 3 2 )
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

458
4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings
Engine compartment
FuseAmpereCircuit
1HTR50 AAir conditioning system
2RDI40 AElectric cooling fans
3OIL PMP10 AHybrid system, transmission
4S-HORN10 ANo circuit
5ABS MAIN NO.27. 5 AElectronically controlled brake system
6H-LP CLN30 AHeadlight cleaner
7AMP NO.130 AAudio system, back door opener
8IGCT30 APCU, IGCT NO.2, IGCT NO.3,
hybrid system
9P CON MAIN7. 5 A
P position control system, hybrid sys-
tem, smart access system with push-
button start

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
10AM27. 5 A
Smart access system with push-button
start, hybrid system, multiport fuel
injection system/sequential multiport
fuel injection system, P position con-
trol system, cruise control system,
dynamic radar cruise control system
11ECU-B27. 5 A
Smart access system with push-button
start, multiport fuel injection system/
sequential multiport fuel injection sys-
tem, trunk opener switch
12MAYDAY10 ALexus link system
13ECU-B310 AAir conditioning system, rear window
defogger, mirror heater
14TURN & HAZ10 ATurn signal lights, emergency flashers
15ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
16ABS MAIN NO.120 AElectronically controlled brake system
17P/I 240 A
P position control system, hybrid sys-
tem, transmission, smart access sys-
tem with push-button start, horn,
headlights (low beam), back-up lights
18ABS MTR 130 AElectronically controlled brake system
19ABS MTR 230 AElectronically controlled brake system
20H-LP HI MAIN20 AHeadlights (high beam)
21AMP NO.230 AAudio system, navigation system
22DOOR NO.225 ANo circuit
FuseAmpereCircuit

460
4-3. Do-it-yourself maintenance
23P/I 160 AIG2, EFI MAIN, BATT FAN
24EPS60 AElectric power steering system
25PCU10 AHybrid system
26IGCT NO.210 A
Smart access system with push-button
start, hybrid system, P position control
system, multiport fuel injection sys-
tem/sequential multiport fuel injection
system
27MIR HTR10 ARear window defogger, mirror heater
28RAD NO.115 AAudio system, navigation system
29DOME10 A
Interior lights, antiglare inside rear
view mirror, audio system, navigation
system, garage door opener
30ECU-B7. 5 A
Smart access system with push-button
start, air conditioning system, gauges
and meters, outside rear view mirror,
clock, seats position memory, electric
tilt & telescopic steering wheel
31H-LP LH HI10 ALeft-hand headlight (high beam)
32H-LP RH HI10 ARight-hand headlight (high beam)
33EFI NO. 210 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
34IGCT NO.310 AHybrid system
FuseAmpereCircuit

462
4-3. Do-it-yourself maintenance
Driver’s side instrument panel
FuseAmpereCircuit
1TA I L10 AParking lights, tail lights, license plate
lights, side maker lights, front fog lights
2PA N E L10 A
Navigation system, audio system, air
conditioning system, emergency
flashers switch, wiper de-icer switch,
seat heater switch, P position switch,
headlight cleaner switch, front pas-
senger’s seatbelt reminder light,
power window switch, VSC-OFF
switch, HUD switch, AFS-OFF switch,
POWER ·ECO· EV mode switch,
view select switch, trunk opener
switch, fuel lid opener switch, glove
box light, rear sun shade switch,
remote touch, rear view mirror switch