ECU Lexus IS300h 2017 Service Manual

951-3. Theft deterrent system
1
For safety and security
IS300h_EE(OM53D89E)
●The intrusion sensor detects intruders or movement in the vehicle.
●The tilt sensor detects changes in vehicle inclination, such as when the vehicle
is towed away.
This system is designed to deter and pr event vehicle theft but does not guarantee
absolute security ag ainst all intrusions.
■Setting the intrusion sensor and tilt sensor
The intrusion sensor and t ilt sensor will be set automatically when the alarm is
set. ( P. 92)
■Canceling the intrusion sensor and tilt sensor
If you are leaving pets or other moving things inside the vehicle, make sure to
disable the intrusion sensor and tilt sensor before setting the alarm, as they will
respond to movement inside the vehicle.
Turn the power switch off.
Press the intrusion sensor and tilt
sensor cancel switch.
Press the switch again to re-enable
the intrusion sensor and tilt sensor.
Each time the intrusion sensor is can- celed/set, a message will be shown
on the multi-information display in
the instrument cluster.
Intrusion sensor (if equipped) /I ntrusion sensor and tilt sensor (if
equipped)
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2

971-3. Theft deterrent system
1
For safety and security
IS300h_EE(OM53D89E)
■Tilt sensor detection considerations
The sensor may trigger the alar m in the following situations:
●The vehicle is transported by a ferry, trailer, train, etc.
●The vehicle is parked in a parking garage.
●The vehicle is inside a car wash that moves the vehicle.
●Any of the tires loses air pressure.
●The vehicle is jacked up.
●An earthquake occurs or the road caves in.
NOTICE
■To ensure the intrusion sensor function correctly
●Installing accessories other than genuine Lexus parts or leaving objects between the driver’s seat and front passenger’s seat may reduce the detection performance.
●To ensure that the sensors operate properly,
do not touch or cover them.
●Do not spray air fresheners or other products
directly into the sensor holes.

1022. Instrument cluster
IS300h_EE(OM53D89E)
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( P. 233)
*2
(if equipped)
LDA (Lane Departure
Alert) indicator ( P. 279)
Tail light indicator
( P. 237)

(if equipped)
Lexus parking assist-sensor
indicator ( P. 309)
Headlight high beam indi-
cator ( P. 237)
*1, 2 Slip indicator
( P. 353)
*1
(if equipped)
Automatic High Beam indi-
cator ( P. 240)
*1VSC OFF indicator
( P. 354)
Rear fog light indicator
( P. 244)
*1, 3
(if equipped)
PCS warning light
( P. 269)
(if equipped)
Cruise control indicator ( P. 293, 305)
*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 334)
(if equipped)
Dynamic radar cruise con-
trol indicator ( P. 293)
*6Security indicator
( P. 86, 92)
(if equipped)
Cruise control “SET” indica-
tor ( P. 293, 305)
*7Low outside temperature
indicator ( P. 105)
(if equipped)
LDA (Lane Departure
Alert) indicator ( P. 279)
“READY” indicator
( P. 219)
(if equipped)
LDA (Lane Departure Alert) indicator ( P. 279) EV indicator ( P. 79)

1403-1. Key information
IS300h_EE(OM53D89E)
■Card key (if equipped)
●The card key is not waterproof.
●The mechanical key that is stored inside the card key should be used only if a problem arises, such as when the card key does not operate properly.
●If it is difficult to take out the mechanical key, push down the lock release button using a
pen tip etc. If it is still difficul t to pull it out, use a coin etc.
■When required to leave the vehicle’s key with a parking attendant
Set the luggage security system ( P. 153) on and lock the glove box (P. 485) as cir- cumstances demand.
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
New genuine mechanical keys can be made by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer using the other mechanical key and the key number stamped on your key number plate. Keep the plate in a safe place such as your
wallet, not in the vehicle.
●To store the mechanical key in the card key,
insert it while pressing the lock release button.
●If the battery cover is not installed and the bat- tery falls out or if the battery was removed
because the key got wet, reinstall the battery
with the positive terminal facing the Lexus emblem.

144
IS300h_EE(OM53D89E)
3-2. Opening, closing and locking the doors and trunk
The vehicle can be locked and unlock ed using the entry function, wireless
remote control or door lock switches.
◆Entry function (if equipped)
Carry the electronic key to enable this function.
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 after the doors are locked.
Touch the lock sensor (indenta-
tion on the upper part of the door
handle) to lock the doors.
Check that the door is securely locked.
◆Wireless remote control
Locks all the doors
Press and hold to close the windows
and moon roof.*
Check that the door is securely locked.
Unlocks all the doors
Press and hold to open the windows
and moon roof.*
*: These settings must be customized at
any authorized Lexus retailer or
Lexus authorized repairer, or any
reliable repairer.
Doors
Unlocking and locking the doors from the outside
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2
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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.

1533-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53D89E)
To protect luggage stored in the trunk against theft, the luggage security system
can be set to on.
Folding type rear seats only: Move
the luggage security system levers to
the lock position.
To disable the trunk opener, turn the
main switch in the glove box off
On
Off
When the main switch is off, the trunk
lid cannot be opened even with the
wireless remote co ntrol or entry function.
Luggage security system
1
2
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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.

1753-3. Adjusting the seats
3
Operation of each component
IS300h_EE(OM53D89E)
Check that the luggage security sys-
tem lever in the trunk is in the unlock
position.
Pull the seatback lock release lever
and fold the seatback down.
To return the rear seatbacks to their
original position, lift them up until they lock.
 P. 153
Rear seats (folding type)
: If equipped
The rear seatbacks can be folded down.
Folding down the rear seatbacks
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2
Luggage security system

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.