If the electronic key does not operate properly

If communication between the electronic key and vehicle is interrupted or the electronic key cannot be used because the battery is depleted, smart access system with push-button start and wireless remote control cannot be used. In such cases, the doors can be opened or the engine can be started by following the procedure below.

Locking and unlocking the doors and key linked functions

Remove the cover on the drivers


Remove the cover on the drivers door handle using the mechanical key in order to perform
the following operations.

1. Locks all doors.

2. Closes the windows/standard moon roof (turn and hold) 3. Unlocks the door.

Turning the key rearward unlocks the driver's door. Turning the key once again unlocks the other doors.

4. Opens the windows/standard moon roof (turn and hold).

Return the cover to the original position after use.

Changing ENGINE START STOP switch modes and starting the engine

1. Shift the shift lever to P and apply the brakes.

2. Touch the Lexus emblem side of


2. Touch the Lexus emblem side of the electronic key to the ENGINE START STOP switch.

An alarm will sound to indicate that the start function cannot detect the electronic key that is touched to the ENGINE START STOP
switch if any of the doors is opened and closed while the key is touched to the switch.

3. To change ENGINE START STOP switch modes: Within 10 seconds of the buzzer sounding, release the brake pedal and press the ENGINE START STOP switch. Modes can be changed each time the switch is pressed.

To start the engine: Press the ENGINE START STOP switch within 10 seconds after the buzzer sounds, keeping the brake pedal depressed.

In the event that the ENGINE START STOP switch still cannot be operated, contact your Lexus dealer.

Stopping the engine

Shift the shift lever to P and press the ENGINE START STOP switch as you normally
do when stopping the engine.

Replacing the key battery

As the above procedure is the temporary measure, it is recommend that the electronic
key battery be replaced immediately when the battery depletes.

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