Page 75 of 676

75
1
For safety and security
IS200t_EE(OM53D77E)1-2. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause
the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys have built-in tran sponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prevent vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.
Page 83 of 676

831-2. Theft deterrent system
1
For safety and security
IS200t_EE(OM53D77E)
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the situation, the door may automatically lock to
prevent improper entry into the vehicle:
●The doors are unlocked manually without the mechanical key and the alarm is trig-
gered.
●While the alarm is operating, the doors ar e unlocked manually without the mechanical
key.
●When recharging or replacing the battery
●The doors or trunk are unlocked using the
mechanical key.
●A person inside the vehicle opens a door, the
trunk or hood, or unlocks the vehicle using a
inside lock button.
●The battery is recharged or replaced when the
vehicle is locked. ( P. 620)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modi fied or removed, the proper operation of
the system cannot be guaranteed.
Page 121 of 676
121
3
Operation of
each component
IS200t_EE(OM53D77E)
3-1. Key information
Keys ...................................................122
3-2. Opening, closing and locking the doors and trunk
Doors ............................................... 128
Trunk ................................................ 135
Smart entry & start system ........ 141
3-3. Adjusting the seats Front seats.......................................157
Rear seats (folding type) .......... 159
Driving position memory ........... 161
Head restraints .............................166
3-4. Adjusting the steering wheel and mirrors
Steering wheel ............................. 169
Inside rear view mirror ............... 171
Outside rear view mirrors........173
3-5. Opening, closing the windows and moon roof
Power windows ............................ 177
Moon roof ........................................181
Page 122 of 676
122
IS200t_EE(OM53D77E)3-1. Key information
The following keys are provided with the vehicle.
Electronic keys
• Operating the smart entry & startsystem ( P. 141)
• Operating the wireless remote con- trol function
Mechanical keys
Key number plate
Card key (electronic key)
(if equipped)
Operating the smart entry & start sys-
tem ( P. 141)
Locks the doors ( P. 128)
Closes the windows and moon roof
*
( P. 128)
Unlocks the doors ( P. 128)
Opens the windows and moon roof
*
( P. 128)
Opens the trunk ( P. 136)
*: These settings must be customized at an y authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
Keys
The keys
1
2
3
4
Wireless remote control
1
2
3
4
5
Page 123 of 676
1233-1. Key information
3
Operation of each component
IS200t_EE(OM53D77E)
To take out the mechanical key, push
the release button and take the key out.
The mechanical key can only be
inserted in one direction, as the key only
has grooves on one side. If the key can-
not be inserted in a lock cylinder, turn it
over and re-attempt to insert it.
After using the mechanical key, store it
in the electronic key. Carry the mechan-
ical key together with the electronic key.
If the electronic key battery is depleted
or the entry function does not operate
properly, you will ne ed the mechanical
key. ( P. 615)
Using the mechanical key
Page 124 of 676

1243-1. Key information
IS200t_EE(OM53D77E)
■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 difficu lt to pull it out, use a coin etc.
■When required to leave the vehicl e’s key with a parking attendant
Set the luggage security system ( P. 137) on and lock the glove box ( P. 469) 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. K eep 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.
Page 125 of 676

1253-1. Key information
3
Operation of each component
IS200t_EE(OM53D77E)
■When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any but-
tons on the electronic key while inside the aircraft cabin. If you are carrying an electronic
key in your bag etc., ensure that the buttons are not likely to be pressed accidentally.
Pressing a button may cause the electronic key to emit radio waves that could interfere
with the operation of the aircraft.
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year and a
half.)
●If the battery becomes low, an alarm will sound in the cabin when the engine is stopped.
( P. 582)
●As the electronic key always receives ra dio waves, the battery will become depleted
even if the electronic key is not used. The following symptoms indicate that the elec-
tronic key battery may be depleted. Replace the battery when necessary. ( P. 527)
• The smart entry & start system or the wireless remote control does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 1 m (3 ft.) of the
following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
■Replacing the battery
P. 527
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any autho-
rized Lexus retailer or Lexus authorized repa irer, or any reliable repairer for details.
■If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.
Page 126 of 676

1263-1. Key information
IS200t_EE(OM53D77E)
NOTICE
■To prevent key damage
●Do not drop the keys, subject them to strong shocks or bend them.
●Do not expose the keys to high temperatures for long periods of time.
●Do not get the keys wet or wash them in an ultrasonic washer etc.
●Do not attach metallic or magnetic materials to the keys or place the keys close to
such materials.
●Do not disassemble the keys.
●Do not attach a sticker or anything else to the surface of the electronic key.
●Do not place the keys near objects that produce magnetic fields, such as TVs, audio
systems and induction cookers, or medical electrical equipment, such as low-fre-
quency therapy equipment.
■Carrying the electronic key on your person
Carry the electronic key 10 cm (3.9 in.) or more away from electric appliances that are
turned on. Radio waves emitted from electric appliances within 10 cm (3.9 in.) of the
electronic key may interfere with the key, causing the key to not function properly.
■In case of a smart entry & start system malfunction or other key-related problems
Take your vehicle with all the electronic keys provided with your vehicle, including the
card key, to any authorized Lexus retailer or Lexus authoriz ed repairer, or any reliable
repairer.