2010 Lexus HS250h headlights

223
2-4. Using other driving systems
2
When driving
HS250h_U_75033U(Canada)
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 bright 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-and-down motion such as when driving
on an extremely rough road or on a seam in the pavement.
●When headlight brightness is reduced due to dirt on the lenses, or when the
headlights are misaligned.
●When driving with a strong crosswind.

Maintenance and care4
401
HS250h_U_75033U(Canada)
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
HS250h_U_75033U(Canada)
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 6 )
• Does the brake pedal have the cor- rect amount of free play?
(→ P. 5 5 6 )
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 )

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
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

467
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
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 full 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.

469
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
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. 5 5 8 )
■ Remove the engine compartment covers
→ P. 4 2 3
■ 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
(if equipped)

470
4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)
LED headlights
■Rear bulb locations
Front fog light
Front turn signal light
Parking lightFront side marker light
Headlight high beam and
daytime running light
(if equipped)
Rear turn signal light
Back-up light
License plate light

471
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
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.
∗: If equipped