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1373-1. Key information
3
Operation of each component
RX350/RX200t_EE_OM48F32E
■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 soun d in the cabin when the engine is stopped. ( P. 638)
●As the electronic key always receives radio 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. 638)
• 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 thefollowing electrical appliances that produce a magnetic field:
•TVs
• Personal computers • Cellular phones, cordless phones and battery chargers• Recharging cellular phones or cordless phones
• Induction cookers • Table lamps
■Replacing the battery
P. 638
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any autho-
rized Lexus dealer or repairer, or another du ly qualified and equipped professional for details.
■If a wrong key is used
The key cylinder rotates freely, isolated from the internal mechanism.
Page 138 of 776

1383-1. Key information
RX350/RX200t_EE_OM48F32E
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 a ppliances 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 dealer or repairer, or another duly qualified and
equipped professional.
■When an electronic key is lost
If the electronic key remains lost, the risk of vehicle theft increases significantly. Visit
any authorized Lexus dealer or repairer, or another duly qualified and equipped pro- fessional immediately with all remaining el ectronic keys and the card key that were provided with your vehicle.
Page 139 of 776

1393-1. Key information
3
Operation of each component
RX350/RX200t_EE_OM48F32E
NOTICE
■Handling the card key (if equipped)
●Do not apply excess force when inserting the mechanical key into the card key. Doing so may damage the card key.
●If the battery or card key terminals get wet, the battery may corrode and the card keymay stop working.If the key is dropped into water, or if drinki ng water, etc. is spilled on the key, immedi-
ately remove the battery cover and wipe the battery and terminals. (To remove the battery cover, lightly grasp and pull it.) If the battery is corroded, have any authorized Lexus dealer or repairer, or another duly qualified and equipped professional replace
the battery.
●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 direction 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 hard 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.
Page 140 of 776

140
RX350/RX200t_EE_OM48F32E
3-2. Opening, closing and locking the doors
◆Smart entry & start system
Carry the electronic key to enable this function.
Grip the door 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.
*: The door unlock settings can be
changed. ( P. 144,743)
Touch the lock sensor (indenta-
tion on the surface of the door
handle) to lock all the doors.
Check that the door is securely locked.
◆Wireless remote control
Locks all the doors
Check that the door is securely
locked.
Press and hold to close the win-
dows*2 and the moon roof*1, 2 or
panoramic moon roof*1, 2
Unlocks all the doors
Press and hold to open the win-
dows*2 and the moon roof*1, 2 or
panoramic moon roof*1, 2
*1: If equipped
*2: This setting must be customized at any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Side doors
The vehicle can be locked and unlocked using the entry function, wireless
remote control or door lock switches.
Locking and unlocking the doors from the outside
1
2
1
2
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1413-2. Opening, closing and locking the doors
3
Operation of each component
RX350/RX200t_EE_OM48F32E
■Operation signals
Doors: The emergency flashers flash to indicate th at the doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows and moon roof or panoramic moon roof: A buzzer sounds.
■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.
■When the door cannot be locked by the lock sensor on the surface of the door handle
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer sounds continuously for 5 seconds. Fully close the door to stop the buzzer, and lock the vehicleonce more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm system. ( P. 83)
■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. 710)
●Replace the key battery with a new one if it is depleted. (P. 638)
When the door cannot be locked even if the lock sensor on the surface of the door handle is
touched by a finger, touch the lock sensor with the palm.
When gloves are being worn, remove the
gloves.
Page 142 of 776
1423-2. Opening, closing and locking the doors
RX350/RX200t_EE_OM48F32E
◆Door lock switches (to lock/unlock)
Locks all the doors
Unlocks all the doors
◆Inside lock buttons (to lock)
Push down the inside lock button to
lock the door.
◆Inside door handles (to unlock)
For the front doors
Pull the handle to unlock and open
the door.
When the door is unlocked, the inside lock button will pop up.
For the rear doors
Pull the handle to unlock the door.
Pull the handle a second time to
open the door.
When the door is unlocked, the
inside lock button will pop up.
Locking and unlocking the doors from the inside
1
2
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1433-2. Opening, closing and locking the doors
3
Operation of each component
RX350/RX200t_EE_OM48F32E
For the front doors
Push down the inside lock button.
Close the door while pulling the door handle.
The door cannot be locked if the engine switch is in ACCESSORY or IGNITION
ON mode, or the electronic key is left insi de the vehicle. However, the key may not be detected correctly and the door may be locked.
For the rear doors
Push down the inside lock button.
Close the door.
The door cannot be locked if the engine switch is in ACCESSORY or IGNITION ON mode, or the electronic key is left insi de the vehicle. However, the key may not be detected correctly and the door may be locked.
The door cannot be opened from inside
the vehicle when the lock is set.
Unlock
Lock
These locks can be set to prevent chil-
dren from opening the rear doors. Push down on each rear door switch to lockboth rear doors.
The following functions can be set or canceled:
For instructions on customizing, refer to P. 741.
Locking the doors from the outside without a key
Rear door child-protector lock
1
2
1
2
1
2
Automatic door locking and unlocking systems
FunctionOperation
Speed linked door locking functionAll doors are automatically locked whenvehicle speed is approximately 20 km/h(12 mph) or higher.
Shift position linked door locking
function
All doors are automatically locked when
shifting the shift lever out of P.
Shift position linked door unlocking functionAll doors are automatically unlockedwhen shifting the shift lever to P.
Driver’s door linked door unlocking functionAll doors are automatically unlockedwhen driver’s door is opened.
Page 144 of 776

1443-2. Opening, closing and locking the doors
RX350/RX200t_EE_OM48F32E
■Switching the door unlock function
It is possible to set which doors the entry function unlocks using the wireless remote con- trol.
Turn the engine 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. 85)
When the indicator light on the key surface is not on, press and hold , 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, andrepeat step .)
For vehicles with an alarm: To prevent unin tended triggering of the alarm, unlock the doors using the wireless remote control and op en 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. 83)
■Impact detection door lock release system
In the event that the vehicle is subject to a strong impact, all the doors are unlocked. Depending on the force of the impact or the type of accident, however, the system may
not operate.
■Using the mechanical key
The doors can also be locked and unlocked with the mechanical key. ( P. 710)
■Open door warning buzzer
If the vehicle speed reaches 5 km/h (3 mph), the master warning light flashes and a buzzer sounds to indicate that door (s) or the hood in not fully closed.
The open door(s) or hood is displa yed on the multi-information display.
1
2
3
3
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 once
Holding any of the passenger
door handles unlocks all the doors.
Holding a door handle unlocksall the doors.Exterior: Beeps twiceInterior: Pings once