Lexus RX (RX 350L, RX450h) 2016-2024 Owners Manual: Key information

The keys

The following keys are provided with the vehicle.

  1. Electronic keys
    • Operating the smart access system with push-button start
    • Operating the wireless remote control function
  2. Mechanical keys
  3. Key number plate

Lexus RX. Key information

Wireless remote control

  1. Locks all the doors
  2. Unlocks all the doors
  3. Opens the windows*2 and the moon roof*1, 2 or panoramic moon roof*1, 2
  4. Opens and closes the power back door
  5. Sounds the alarm

Lexus RX. Key information

*1: If equipped
*2: This setting must be customized at your Lexus dealer.

Using the mechanical key

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 cannot 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 mechanical key together with the electronic key.

If the electronic key battery is depleted or the entry function does not operate properly, you will need the mechanical key.

Lexus RX. Key information

■ Panic mode When is pressed for longer than about one second, an alarm will sound intermittently and the vehicle lights will flash to deter any person from trying to break into or damage your vehicle.

To stop the alarm, press any button on the electronic key.

Lexus RX. Key information

■ When required to leave the vehicle's key with a parking attendant Lock the glove box as circumstances demand. Remove the mechanical key for your own use and provide the attendant with the electronic key only.

■ If you lose your mechanical keys New genuine mechanical keys can be made by your Lexus dealer using another 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.

■ When riding in an aircraft When bringing an electronic key onto an aircraft, make sure you do not press any buttons 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.
  • If the battery becomes low, an alarm will sound in the cabin when the hybrid system is stopped.
  • 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 electronic key battery may be depleted. Replace the battery when necessary.
    • The smart access system with push-button start 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 reduce key battery depletion when the electronic key is to not be used for long periods of time, set the electronic key to the battery-saving mode.
  • To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) 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
    • Induction cookers
    • Table lamps

■ Confirmation of the registered key number The number of keys already registered to the vehicle can be confirmed. Ask your Lexus dealer for details.

■ If a wrong key is used The key cylinder rotates freely, isolated from the internal mechanism.


■ 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-frequency therapy equipment.

■ Carrying the electronic key on your person Carry the electronic key 3.9 in. (10 cm) or more away from electric appliances that are turned on. Radio waves emitted from electric appliances within 3.9 in. (10 cm) of the electronic key may interfere with the key, causing the key to not function properly.

■ In case of a smart access system with push-button start malfunction or other key-related problems Take your vehicle with all the electronic keys provided with your vehicle to your Lexus dealer.

■ When an electronic key is lost If the electronic key remains lost, the risk of vehicle theft increases significantly. Visit your Lexus dealer immediately with all remaining electronic keys that were provided with your vehicle.

    Operation of each component

    Opening, closing and locking the doors

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