2010 Lexus HS250h hybrid battery

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3-1. Using the air conditioning system and defogger
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Interior features
HS250h_U_75033U(Canada)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the hybrid
system is off.

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3-7. Other interior features
HS250h_U_75033U(Canada)
Vanity mirrors
NOTICE
■To prevent 12-volt battery discharge
Do not leave the vanity lights on for extended periods while the hybrid system is off.
Slide the cover to open.
The light turns on when the
cover is opened.

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3-7. Other interior features
HS250h_U_75033U(Canada)
Power outlets
■The power outlet can be used when
The “POWER” switch is in ACCESSORY or ON mode.
NOTICE
■To avoid damaging the power outlets
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short circuit.
■To prevent blown fuse
Do not use an accessory that uses more than 12 V 10 A.
■To prevent 12-volt battery discharge
Do not use the power outlet longer than necessary when the hybrid system is off.
The power outlet can be used for 12 V accessories that run on less than 10
A.

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3-7. Other interior features
HS250h_U_75033U(Canada)
CAUTION
■Burns
●Use caution when seating the following persons in a seat with the seat heater on
to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs,cold remedies, etc.)
●Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature of the
seat and may lead to overheating.
●Do not use the seat heater more than necessary. Doing so may cause minor
burns or overheating.
NOTICE
■To prevent damage to the seat heaters/ventilators
Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
■To prevent 12-volt battery discharge
Turn the seat heaters/ventilators off when the hybrid system is off.

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3-7. Other interior features
3
Interior features
HS250h_U_75033U(Canada)
However, the rear sunshade is raised again if any of the following occurs:
●The button is pressed again.
●The shift lever is shifted to P.
●The shift lever is shifted out of P or R, and the vehicle reaches a speed of 9 mph
(15 km/h).
If the hybrid system is turned off when the rear sunshade has been lowered due to
the reverse operation feature, it will not be raised even when the hybrid system is
turned on again and the vehicle reaches a speed of 9 mph (15 km/h). To raise the
sunshade again, press the button.
■When the reverse operation feature does not operate
The rear sunshade may not lower or rise automatically. In this case, press the switch
to lower or raise the rear sunshade.
■Customization
Settings (e.g. time elapsed before the reverse operation) can be changed.
(Customizable features: →P. 5 74 )
CAUTION
■When the rear sunshade is being raised or lowered
Do not place fingers or other objects in the fastener section or in the opening.
They may get caught, causing injury.
NOTICE
■To prevent 12-volt battery discharge
Do not operate the rear sunshade when the hybrid system is off.
■To ensure normal operation of the sunshade
Observe the following precautions:
●Do not place excessive load on the motor or other components.
●Do not place objects where they may hinder opening and closing operations.
●Do not attach items to the rear sunshade.
●Keep the opening clean and clear of obstructions.
●Do not operate the rear sunshade continuously for long periods of time.

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4-1. Maintenance and care
4
Maintenance and care
HS250h_U_75033U(Canada)
■Caring for leather areas
Lexus recommends cleaning the interior of the vehicle at least twice a year to main-
tain the quality of the vehicle’s interior.
■Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a sponge or
brush to apply the foam. Rub in overlapping circles. Do not use water. Wipe dirty
surfaces and let them dry. Excellent results are obtained by keeping the carpet as
dry as possible.
■Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also check the
belts periodically for excessive wear, fraying or cuts.
CAUTION
■Water in the vehicle
●Do not splash or spill liquid in the vehicle, such as on the floor, in the hybrid bat-
tery (traction battery) air vents, and in the trunk.
Doing so may cause the hybrid battery, electrical components, etc. to malfunc-
tion or catch fire.
●Do not get any of the SRS components or wiring in the vehicle interior wet.
(→ P. 1 0 6 )
An electrical malfunction may cause the airbags to deploy or not function prop-
erly, resulting in death or serious injury.
■Cleaning the interior (especially instrument panel)
Do not use polish wax or polish cleaner. The instrument panel may reflect off the
windshield, obstructing the driver’s view and leading to an accident, resulting in
death or serious injury.

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HS250h_U_75033U(Canada)
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct pro-
cedure as given in these sections.
ItemsParts and tools
12-volt battery condition ( →P. 4 3 3 )
•Grease
•Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( →P. 4 3 1 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power control unit coolant
level (→P. 4 2 8 )
• “Toyota Super Long Life Coolant”
or a similar high quality ethylene
glycol based non-silicate, non-
amine, non-nitrite and non-borate
coolant with long-life hybrid
organic acid technology.
For the U.S.A.:
“Toyota Super Long Life Coolant”
is pre-mixed with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life Coolant”
is pre-mixed with 55% coolant and
45% deionized water.
• Funnel (used only for adding cool- ant)

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4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to discon-
nect the ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart key system may not be possible immedi-
ately after reconnecting the 12-volt battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the “POWER” switch in ACCESSORY mode. The
hybrid system may not start with the “POWER” switch turned OFF. However,
the hybrid system will operate normally from the second attempt.
●The “POWER” switch mode is recorded by the vehicle. If the battery is recon-
nected, the vehicle will return the “POWER” switch mode to the status it was in
before the battery was disconnected. Make sure to turn off the power before
disconnect the battery. Take extra care when connecting the battery if the
“POWER” switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Lexus dealer.
■ Exterior
Make sure that the 12-volt battery terminals are not corroded and
that there are no loose connections, cracks or loose clamps.
Te r m i n a l s
Hold-down clamp