light Lexus IS300h 2017 Service Manual

1433-1. Key information
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Operation of each component
IS300h_EE(OM53D89E)
NOTICE
■When an electronic key is lost
If the electronic key remains lost, the risk of vehicle theft increases significantly. Visit
any authorized Lexus retailer or Lexus auth orized repairer, or any reliable repairer
immediately with all remaining electronic keys and the card key that were provided with your vehicle.
■Handling the card key
●Do not apply excess force when inserting the mechanical key into the card key. Doingso may damage the card key.
●If the battery or card key terminals get wet, the battery may corrode.
If the key is dropped into water, or if drin king water etc. is spilled on the key, immedi- ately remove the battery cover and wipe th e battery and terminals. (To remove the
battery cover, lightly grasp and pull it.) If the battery is corroded, have any authorized
Lexus retailer or Lexus author ized repairer, or any reliable repairer replace the bat- tery.
●Do not crush the battery cover or use a screwdriver to remove the battery cover.
Forcibly removing the battery co ver may bend or damage the key.
●If the battery cover is frequently removed, the battery cover may become loose.
●When installing the battery, make sure to check the direction of the battery.
Installing the battery in the wrong directio n may cause the battery to deplete rapidly.
●The surface of the card key may be damaged, or its coating may peel off in the follow-
ing situations:
• The card key is carried together with ha rd objects, such as coins and keys. • The card key is scraped with a sharp object, such as the tip of a mechanical pencil.
• The surface of the card key is wiped with thinner or benzene.

1453-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53D89E)
■Operation signals
The emergency flashers flash to indicate that the doors have been locked/unlocked.
(Locked: once; Unlocked: twice)
A buzzer sounds to indicate that th e windows and moon roof are operating.
■Security feature
If a door is not opened within approximately 30 seconds after the vehicle is unlocked, the security feature automatically locks the vehicle again.
■Welcome light illumination control
The front position, tail and license plate light s automatically turn on at night when the doors are unlocked using the entry function or wireless remote control if the light switch
is in the “AUTO” position.
■When the door cannot be locked by the lock sensor on the upper part of the door han- dle (vehicles with entry function)
■Door lock buzzer
If an attempt to lock the doors is made wh en a door is not fully closed, a buzzer sounds continuously for 5 seconds. Fully close the d oor to stop the buzzer, and lock the vehicle
once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm system. ( P. 92)
■If the smart entry & start system or the wireless remote control does not operate prop-
erly
Use the mechanical key to lock and unlock the doors. ( P. 628)
Replace the key battery with a new one if it is depleted. (P. 549)
If the door will not lock even when the topside sensor area is touched, try touching both the
topside and underside sensor areas at the same
time.

1493-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53D89E)
■Switching the door unlock function (vehicles with entry function)
It is possible to set which doors the entry fu nction unlocks using the wireless remote con-
trol.
Turn the power switch off.
Cancel the intrusion sensor and tilt sensor of the alarm system to prevent unintended
triggering of the alarm while changing the settings. (if equipped) ( P. 95)
When the indicator light on the key surface is not on, press and hold , or
for approximately 5 seconds while pressing and holding .
The setting changes each time an operatio n is performed, as shown below. (When
changing the setting continuously, release the buttons, wait for at least 5 seconds, and repeat step .)
For vehicles with an alarm: To prevent unin tended triggering of the alarm, unlock the doors using the wireless remote control and open and close a door once after the set-
tings have been changed. (If a door is not opened within 30 seconds after is
pressed, the doors will be locked again and the alarm will automatically be set.)
In a case that the alarm is triggered, immediately stop the alarm. ( P. 93)
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Multi-information
displayUnlocking functionBeep
(Left-hand drive
vehicles)
(Right-hand drive
vehicles)
Holding the driver’s door handle
unlocks only the driver’s door.
Exterior: Beeps 3 times
Interior: Pings onceHolding the front passenger’s
door handle unlocks all the doors.
Holding either front door handleunlocks all the doors.Exterior: Beeps twiceInterior: Pings once

1543-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53D89E)
■Trunk light (if equipped)
The trunk light turns on when the trunk is opened.
■Function to prevent the trunk being lo cked with the electronic key inside
●When all doors are locked, closing the trunk lid with the electronic key left inside the
trunk will sound an alarm.
In this case, the trunk lid can be opened pressing the trunk release button on the trunk lid.
●If the spare electronic key is put in the trunk with all the doors locked, the key confine-
ment prevention function is activated so the trunk can be opened. In order to prevent theft, take all electronic keys with you when leaving the vehicle.
●If the electronic key is put in the trunk with all the doors locked, the key may not be
detected depending on the location of the key and the surrounding radio wave condi- tions. In this case, the key confinement prev ention function cannot be activated, causing
the doors to lock when the trunk is closed. Make sure to check where the key is before
closing the trunk.
●The key confinement prevention function cannot be activated if any one of the doors is
unlocked. In this case, open the trunk using the trunk opener.
■Using the mechanical key
The trunk can be also opened using the mechanical key. ( P. 628)
■If the smart entry & start system or the wireless remote control does not operate prop-
erly
Use the mechanical key to unlock the trunk. ( P. 628)
Replace the key battery with a new one if it is depleted. (P. 549)
■When leaving a key to the vehicle with a parking attendant
 P. 140
■Customization
The trunk unlocking operation can be changed. (Customizable features: P. 657)

1563-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53D89E)
WARNING
■Using the trunk
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in serious injury.
●Remove any heavy loads, such as snow and ice, from the trunk lid before opening it. Failure to do so may cause the trunk lid to suddenly shut again after it is opened.
●When opening or closing the trunk lid, thoroughly check to make sure the surround-
ing area is safe.
●If anyone is in the vicinity, make sure they are safe and let them know that the trunk is
about to open or close.
●Use caution when opening or closing the tr unk lid in windy weather as it may move abruptly in strong wind.
●Do not attach any accessories other than genuine Lexus parts to the trunk lid. Such
additional weight on the trunk lid may cause the lid to suddenly shut again after it is
opened.
●The trunk lid may suddenly shut if it is not
opened fully. It is more difficult to open or close the trunk lid on an incline than on a level
surface, so beware of the trunk lid unexpect-
edly opening or closing by itself. Make sure that the trunk lid is fully open and secure
before using the trunk.
●When closing the trunk lid, take extra care to
prevent your fingers etc. from being caught.
●When closing the trunk lid, make sure to press it lightly on its outer surface. If the trunk
handle is used to fully close the trunk lid, it
may result in hands or arms being caught.

1763-3. Adjusting the seats
IS300h_EE(OM53D89E)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■When folding the rear seatbacks down
●Do not fold the seatbacks down while driving.
●Stop the vehicle on level ground, set the parking brake and shift the shift lever to P.
●Do not allow anyone to sit on a folded seatback or in the trunk while driving.
●Do not allow children to enter the trunk.
■After returning the rear seatback to the upright position
●Check that the seat belts are not twisted or caught in the seatback.
●Make sure that the seatback is securely
locked in position by lightly pushing it back
and forth. If the seatback is not securely locked, the red
marking will be visible on the seatback lock
release knob. Make sure that the red marking is not visible.

1793-3. Adjusting the seats
3
Operation of each component
IS300h_EE(OM53D89E)
■To stop the position recall operation part-way through
Perform any of the following operations:
●Press the “SET” button.
●Press button “1”, “2” or “3”.
●Operate any of the seat adjustment switches (only cancels seat position recall).
●Operate the tilt and telescop ic steering control switch (only cancels steering wheel position recall).
■Seat positions that can be memorized ( P. 173)
The adjusted positions other than the position adjusted by lumbar support switch can be memorized.
■Operating the driving position memory after turning the power switch off
Recorded seat positions can be activated up to 180 seconds after the driver’s door is opened and another 60 seconds after it is closed again. Recorded steering wheel posi-
tion can be activated by pressing the power switch.
■In order to correctly use the driving position memory function
If a seat position is already in the furthest possible position and the seat is operated in the
same direction, th e recorded position may be slightly different when it is recalled.

1803-3. Adjusting the seats
IS300h_EE(OM53D89E)
Each electronic key (including a card key) can be registered to recall your pre-
ferred driving position.
■Registering procedure
Record your driving position to button “1”, “2” or “3” before performing the
following:
Carry only the key you want to register, and then close the driver’s door. If 2 or
more keys are in the vehicle, the drivin g position cannot be recorded properly.
Check that the shift lever is in P.
Turn the power switch to ON mode.
Recall the driving position that you want to record.
While pressing the recalled but-
ton, press and hold the door lock
switch (either lock or unlock) until
the buzzer sounds.
If the button could not be registered, the buzzer sounds continuously for
approximately 3 seconds.
■Recall procedure
Carry the electronic key that has been registered to the driving position,
and then unlock and open the driver ’s door using the entry function or
wireless remote control.
The driving position will move to the reco rded position (not including the steering
wheel). However, the se at will move to a position slightly behind the recorded posi-
tion in order to make en tering the vehicle easier.
If the driving position is in a position th at has already been recorded, the seat and
outside rear view mirrors will not move.
Turn the power switch to ACCESSORY mode or ON mode, or fasten a
seat belt.
The seat and steering wheel will move to the recorded position.
Memory recall function
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1873-4. Adjusting the steering wheel and mirrors
3
Operation of each component
IS300h_EE(OM53D89E)
The height of the rear view mirror can be adjusted to suit your driving posture.
Adjust the height of the rear view mir-
ror by moving it up and down.
◆Manual anti-glare insi de rear view mirror
Reflected light from the headlights of vehicles behind can be reduced by
operating the lever.
Normal position
Anti-glare position
Inside rear view mirror
The rear view mirror’s position can be adjusted to enable sufficient confirma-
tion of the rear view.
Adjusting the height of rear view mirror
Anti-glare function
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1883-4. Adjusting the steering wheel and mirrors
IS300h_EE(OM53D89E)
◆Auto anti-glare inside rear view mirror
Responding to the level of brightness of the headlights of vehicles behind, the
reflected light is automatically reduced.
Changing automatic anti-glare func-
tion mode
ON/OFF
When the automatic anti-glare func-
tion is in ON mode, the indicator illu- minates.
The function will set to ON mode
each time the power switch is turned to ON mode.
Pressing the button turns the function
to OFF mode. (The indicator also turns off.)
■To prevent sensor error (veh icles with auto anti-glare inside rear view mirror)
Indicator
To ensure that the sensors operate properly, do
not touch or cover them.
WARNING
Do not adjust the position of the mirror while driving.
Doing so may lead to mishandling of the vehicle and cause an accident, resulting in
death or serious injury.