2010 Lexus HS250h sensor

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1-1. Hybrid system
Hybrid battery air vent
There is an air intake vent on the
side of the rear left seatback for
the purpose of cooling the hybrid
battery (traction battery). If the
vent become blocked, the hybrid
battery may overheat, leading to a
reduction in hybrid battery output.
Emergency shut off system
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks off the high voltage current and stops
the fuel pump to minimize the risk of electrocution and fuel leakage. If the
emergency shut off system activates, yo ur vehicle will not restart. To
restart the hybrid system, contact your Lexus dealer.
Hybrid warning message
A message is automatically displayed when a malfunction occurs in the
hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display
, read
the message and follow the
instructions.
( P. 501 )

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1-3. Opening, closing and locking the doors
1
Before driving
Unlocking and locking the doors (front door handles only)
Grip the handle to unlock the
doors.
Make sure to touch the sensor on
the back of the handle.
The doors cannot be unlocked for
3 seconds af
ter the doors are
locked.
Touch the lock sensor (the inden -
tation on the upper part of the
door handle) to lock the doors.
Unlocking the trunk
Press the button to unlock the
trunk.

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1-3. Opening, closing and locking the doors
1
Before driving
■Effective range (areas within wh ich the electronic key is detected)
When locking or unlocking
the doors
The system can be operated
when the electronic key is
within about 2.3 ft. (0.7 m) of
either of the front outside
door handles. (Only the doors
detecting the key can be
operated.)
When unlocking the trunk
The system can be operated
when the electronic key is
within about 2.3 ft. (0.7 m) of
the trunk release button.
When starting the hybrid
system or changing
“P
OWER” switch modes
The system can be operated
when the electronic key is
inside the vehicle.
■Operation signals
A buzzer sounds and the emergency flashers flash to indicate that the doors have
be
en locked/unlocked. (Locked: Once; Unlocked: Twice)
■When the door cannot be locked by the lock sensor on the upper part of the door
handle
To u c h b o t h l o c k s e n s ors on the upper and
lower part of the door handle simultaneously.

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1-3. Opening, closing and locking the doors
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the
system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the
ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear bumper center when the trunk is unlocked.
• The electronic key is on the instrument panel, rear package tray or floor, or in the door pockets or glove box when the hybrid system is started or
“POWER” switch modes are changed.
●As long as the electronic key is within the effective range, the doors may be
locked or unlocked by anyone.
●Even if the electronic key is not inside th e vehicle, it may be possible to start the
hybrid system if the electronic key is near the window.
●The doors may unlock if a large amount of water splashes on the door handle,
such as in the rain or in a car wash when the electronic key is within the effective
range. (The door will automatically be locked after approximately 60 seconds if
the doors are not opened and closed.)
●Gripping the door handle when wearing a glove may not unlock the door.
●If the wireless remote control is used to lock the doors when the electronic key
is near the vehicle, there is a possibility that the door may not be unlocked by the
entry function. (Use the wireless re mote control to unlock the doors.)
●A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the original
position and check that the doors unlock before pulling the door handle again.
■Notes for locking the doors
●Touching the door lock sensor while we aring gloves may delay or prevent lock
operation. Remove the gloves and touch the lock sensor again.
●When the lock operation is performed using the lock sensor, recognition signals
will be shown up to two consecutive times. After this, no recognition signals will
be given.
●If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. Place the key in a position 6 ft.
(2 m) or more separate from the vehicle while the vehicle is being washed. (Take
care to ensure that the key is not stolen.)

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1-3. Opening, closing and locking the doors
1
Before driving
●If the electronic key is inside the vehicle and a door handle becomes wet during
a car wash, a message may be shown on the multi-information display and a
buzzer will sound outside the vehicle. To turn off the alarm, lock all the doors.
●The lock sensor may not work properly if it comes into contact with ice, snow,
mud, etc. Clean the lock sensor and attemp t to operate it again, or use the lock
sensor on the lower part of the door handle.
●Fingernails may scrape against the door during operation of the door handle.
Be careful not to injure fingernails or damage the surface of the door.
■Notes for the unlocking function
●A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the original
position and check that the doors unlock before pulling the door handle again.
●Gripping the door handle when wearing a glove may not unlock the door.
Remove the gloves and touch the sensor on the back of the handle again.
●If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. Place the key in a position 6 ft.
(2 m) or more separate from the vehicle while the vehicle is being washed. (Take
care to ensure that the key is not stolen.)
●If there is another electronic key in the de tection area, it may take slightly longer
to unlock the doors after th e door handle is gripped.
●Fingernails may scrape against the door during operation of the door handle.
Be careful not to injure fingernails or damage the surface of the door.
■When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not le ave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access system with push-button start can be deactivated in advance.
(  P. 5 7 2 )
■Alarm
Using the smart access system with push-bu tton start to lock the doors will set the
alarm system. ( P. 9 8 )

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1-4. Adjustable components (seats, mirrors, steering wheel)
Seat belt pretensioners (front and outside rear seats)
The pretensioner helps the seat
belt to quickly restrain the occu -
pant by retracting the seat belt
when the v

ehicle is subjected to
certain types of severe frontal colli -
sion.
The pretensioner may not activate
in the event of a minor frontal
impact, a side impact or a rear
impact.
Pre-collision seat belts (front seats of vehicles with pre-collision system)
If the pre-collision sensor detects that a collision is unavoidable, the pre-
collision system will retract the seat be lt, contributing to improvement of
the passenger’s protection.
The same will happen if the driver ma kes an emergency braking or loses con-
trol of the vehicle. ( P. 2 3 2 )
■Adjusting the seat belt shoulder anchor height (front seats)
Push the seat belt shoulder
anchor down while pressing
the r

elease button.
Push the seat belt shoulder
anchor up.
Move the height adjuster up and
down as needed until you hear a
click.

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1-4. Adjustable components (seats, mirrors, steering wheel)
1
Before driving
CAUTION
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, which prevents the sensor from detecting
the passenger’s weight properly. As a result, the seat belt pretensioner for the
front passenger’s seat may not activ ate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.
■Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your shoul-
der. The belt should be kept away from yo ur neck, but not falling off your shoulder.
Failure to do so could reduce the amount of protection in an accident and cause
death or serious injuries in the event of a sudden stop, sudden swerve or accident.
(  P. 74 )
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other serious in juries that could result in death.
If this occurs and the buckle cannot be un fastened, scissors should be used to cut
the belt.
■Seat belt damage and wear
●Do not damage the seat belts by allowing the belt, plate, or buckle to be jammed
in the door.
●Inspect the seat belt system periodically. Check for cuts, fraying, and loose parts.
Do not use a damaged seat belt until it is replaced. Damaged seat belts cannot
protect an occupant from death or serious injury.
●Ensure that the belt and plate are locked and the belt is not twisted. 
If the seat belt does not function co rrectly, immediately contact your Lexus
dealer.
●Replace the seat assembly, including the belt s, if your vehicle has been involved in
a serious accident, even if there’s no obvious damage.

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1
1-4. Adjustable components (seats, mirrors, steering wheel)
Before driving
Inside rear view mirror
In automatic mode, sensors are used to detect the headlights of vehicles
behind and the reflected light is automatically reduced.
Type A
Turns automatic mode on/ off
The indicator comes on when
automatic mode is turned on.
The mirror will revert to auto-
matic mode each time the
“P
OWER” switch is turned to
ON mode.
Type B
Turns automatic mode on/off
The indicator comes on when
automatic mode is turned on.
The mirror will revert to auto-
matic mode each time the
“P
OWER” switch is turned to
ON mode.
Indicator
Indicator