air conditioning Lexus HS250h 2012 Owner's Guide

275
3-1. Using the air conditioning system and defogger
3
Interior features
HS250h_U_75050U
Windshield wiper de-icer∗
∗: If equipped
■Operating conditions
The “POWER” switch is in ON mode.
CAUTION
■When the windshield wiper de-icer is on
Do not touch the lower part of the windshield or the side of the front pillars, as the
surfaces can become very hot and burn you.
This feature is used to prevent ice from building up on the windshield and
wiper blades.
Turns the windshield wiper de-
icer on/off
The windshield wiper de-icer
will automatically turn off after
approximately 15 minutes.

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3-3. Using the Bluetooth® audio system
HS250h_U_75050U
■When using a voice command
For numbers, say a combination of single digits from zero to nine.
Say the command correctly and clearly.
■Situations that the system may not recognize your voice
●When driving on rough roads
●When driving at high speeds
●When air is blowing out of the vents onto the microphone
●When the air conditioning fan emits a loud noise
■Operations that cannot be performed while driving
●Operating the system with
●Registering a portable player to the system
■Changing the passkey
→P. 3 3 9

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3-4. Using the hands-free phone system (for cellular phones)
3
Interior features
HS250h_U_75050U
■Conditions under which the system will not operate
●If using a cellular phone that does not support Bluetooth®
●If the cellular phone is switched off
●If you are outside service range
●If the cellular phone is not connected
●If the cellular phone’s battery is low
●If the cellular phone is behind the seat or in the glove box or console box
●If metal is covering or touching the phone
■When using the hands-free system
●The audio system and voice guidance are muted when making a call.
●If both parties speak at the same time, it may be difficult to hear.
●If the incoming call volume is overly loud, an echo may be heard.
●Try to face toward the microphone as much as possible when speaking.
●In the following circumstances, it may be difficult to hear the other party:
• When driving on unpaved roads
• When driving at high speeds
• When a window is open
• When the air conditioning is blowing directly on the microphone
• When the air conditioning is set to high
■When transferring ownership of the vehicle
Be sure to initialize the system to prevent personal data from being improperly
accessed. (→P. 3 6 7 )
■For detailed information about Handsfree Phone System
For assistance with pairing and operating your cell phone, go to the website
www.lexus.letstalk.com.

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3-4. Using the hands-free phone system (for cellular phones)
3
Interior features
HS250h_U_75050U
■Automatic volume adjustment
When vehicle speed reaches 50 mph (80 km/h) or more, the volume automati-
cally increases. The volume returns to the previous volume setting when vehicle
speed drops to 43 mph (70 km/h) or less.
■When using a voice command
For numbers, say a combination of single digits from zero to nine, # (pound),
∗ (star), and + (plus).
Say the command correctly and clearly.
■Situations that the system may not recognize your voice
●When driving on rough roads
●When driving at high speeds
●When air is blowing out of the vents onto the microphone
●When the air conditioning fan emits a loud noise
■Operations that cannot be performed while driving
●Operating the system with
●Registering a cellular phone to the system
■Changing the passkey
→ P. 3 6 2

Maintenance and care4
415
HS250h_U_75050U
4-1. Maintenance and careCleaning and protecting the vehicle exterior.............. 416
Cleaning and protecting the vehicle interior .............. 420
4-2. Maintenance Maintenance requirements ........................ 423
General maintenance .......... 426
Emission inspection and maintenance (I/M)
programs............................... 430 4-3. Do-it-yourself maintenance
Do-it-yourself service precautions ............................ 431
Hood .......................................... 434
Positioning a floor jack ......... 435
Engine compartment ........... 437
12-volt battery ........................ 447
Tires............................................. 451
Tire inflation pressure........... 459
Wheels ...................................... 462
Air conditioning filter ........... 464
Electronic key battery........... 467
Checking and replacing fuses ........................................ 469
Light bulbs................................. 481

433
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75050U
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions:
■When working on the engine compartment
●Make sure that the indicator on the “POWER” switch and the “READY” indicator
are both off.
●Keep hands, clothing and tools away from the moving fans and engine drive belt.
●Be careful not to touch the engine, power control unit, radiator, exhaust manifold,
etc. right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flam-
mable.
■When working near the electric cooling fans or radiator grille
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature is high.
(→ P. 444)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to
dirt in the air. Also, a backfire could cause a fire in the engine compartment.

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4-3. Do-it-yourself maintenance
HS250h_U_75050U
Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to main-
tain air conditioning efficiency.
■ Removal method
Turn the “POWER” switch off.
Open the glove box. Lift and
remove the partition.
Remove the glove box cover.
Remove the filter cover.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75050U
■Checking interval
Inspect, clean and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement may be
required. (For scheduled maintenance information, please refer to the “Owner’s
Manual Supplement” or “Scheduled Maintenance”.)
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
Slide and pull out the filter.
Replace the filter with a new
one.
The “↑UP” mark shown on the
filter should be pointing up.
■ Cleaning method
If the filter is dirty, clean by blow-
ing compressed air through the
filter from the underside.
Hold the air gun 2 in. (5 cm)
from the filter and blow for
approximately 2 minutes at
72 psi (500 kPa, 5.0 kgf/cm
2
or bar).
If an air gun is not available,
have the filter cleaned by
your Lexus dealer.

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4-3. Do-it-yourself maintenance
HS250h_U_75050U
NOTICE
■To prevent damage to the system
●When using the air conditioning system, make sure that a filter is always installed.
●When cleaning the filter, do not clean with water.

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4-3. Do-it-yourself maintenance
HS250h_U_75050U
Fuse layout and amperage ratingsEngine 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
7P- CO N M T R30 A
P position control system, hybrid sys-
tem, smart access system with push-
button start
8AMP NO.130 AAudio system, back door opener
9IGCT30 APCU, IGCT NO.2, IGCT NO.3,
hybrid system