Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Operation Check

OPERATION CHECK

NOTICE WHEN CHECKING FOLLOWING

(a) Wireless door lock/unlock function:

This wireless door lock control function operates only when the following 3 conditions are met:

(1) The engine switch is off.

(2) All of the doors are closed.

(3) The power door lock control system is operating properly.

HINT:

The unlock function operates even when a door is open.

(b) The size of the wireless door lock control operation area differs depending on the situation.

(1) The size of the operation area differs depending on the user and the way the electrical key transmitter sub-assembly is held.

(2) In certain areas, the wireless door lock control function will only operate partially for the operation area, which will be reduced due to the vehicle body shape and the influence of the surrounding environment.

(3) Since the electrical key transmitter sub-assembly uses weak radio waves, strong radio waves or electrical noise in the frequency used by the electrical key transmitter sub-assembly may reduce the size of the operation area and the remote control may not function.

(4) When the transmitter battery is weak, the size of the operation area is reduced and the remote control may not function.

HINT:

If the electrical key transmitter sub-assembly has been left in a place that is exposed to direct sunlight, such as on the instrument panel, it may cause the battery to be weakened or cause other related problems.

CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS

NOTICE:

The operation check below is based on the non-customized initial condition of the vehicle.

HINT:

  • The switches described in this text are the switches for transmitting signals. The switches are built into the electrical key transmitter sub-assembly.
  • All the functions listed below must be checked in comparison with the remote control operation area.

(a) Make sure that the vehicle is in an area that allows the wireless control function to operate.

(b) Check basic functions.

(1) Check that the LED of the electrical key transmitter sub-assembly illuminates and turns off 3 times when each switch is pressed and held for 5 seconds.

HINT:

If the transmitter LED illuminates once or twice but not a third time when the switch has been pressed and held for 5 seconds or more, it may have a weak battery.

(2) Check that all of the doors lock when the lock switch is pressed.

(3) Check that the driver door unlocks when the unlock switch is pressed once, and all of the doors unlock when pressed twice within 5 seconds.

(4) Check that the back door opens when the back door open switch is pressed and held for 0.8 seconds or more.

(c) Check the chattering prevention function.

(1) Press and hold the lock or unlock switch on the electrical key transmitter sub-assembly and check that the corresponding operation occurs only once and is not repeated continuously while the switch is held. Then press the switch repeatedly at 1-second intervals, check that the corresponding operation is carried out.

(d) Check the automatic locking function.

(1) Check that the doors lock automatically if none of the doors have been opened or all of the doors have not been locked within approximately 60 seconds of all of the doors being unlocked by pressing the unlock switch.

(2) Check that the automatic locking function does not operate when any door has been opened within approximately 60 seconds of unlocking the doors by pressing the unlock switch.

(3) Check that the automatic locking function does not operate when all of the doors have been locked manually (such as using key linked operation, or by pressing the lock switch) within approximately 60 seconds of unlocking the doors by pressing the unlock switch.

(e) Check the switch operation fail-safe function.

(1) Check that the doors cannot be locked/unlocked by operating a switch on an unregistered electrical key transmitter sub-assembly, but that the doors can be locked/unlocked by operating a switch on the registered electrical key transmitter sub-assembly.

(f) Check the door ajar warning function.

(1) Check that the wireless door lock buzzer sounds for approximately 5 seconds when the lock switch is pressed with any of the doors ajar or open.

(g) Check the side doors reservation lock function.

(1) With any door open, press the lock switch on the electrical key transmitter sub-assembly and check that the doors lock when the all of the doors are closed.

(h) Check the power back door reservation lock function.

(1) Check that the doors lock after the back door is closed when the lock switch is pressed during the back door closing operation via the power back door function.

(i) Check the repeat function.

(1) Check that all of the doors attempt to automatically lock 1 second after the lock switch has been pressed while the driver door control knob is being held in the unlock position.

(j) Check the answer-back (hazard warning light) function.

(1) When the lock switch is pressed, check that the hazard warning lights flash once simultaneously with the locking operation of all of the doors.

(2) When the unlock switch is pressed, check that the hazard warning lights flash twice simultaneously with the unlocking operation of all of the doors.

(k) Check the answer-back (wireless door lock buzzer) function.

(1) When the lock switch is pressed, check that the buzzer sounds once simultaneously with the locking operation of all of the doors.

(2) When the unlock switch is pressed once, check that the buzzer sounds twice simultaneously with the unlocking operation of the driver door.

(3) When the back door open switch is pressed and held for 0.8 seconds or more, check that the wireless door lock buzzer sounds.

(l) Check the panic alarm control function.

Click here

(m) Check the illuminated entry function.

Click here

(n) Check the sliding roof open function. (w/ Sliding Roof System)

Click here

(o) Check the panoramic moon roof open system. (w/ Panoramic Moon Roof System)

Click here

(p) Check the power window down function.

Click here

(q) Check the memory call function (w/ Memory).

Click here

    How To Proceed With Troubleshooting
    CAUTION / NOTICE / HINT HINT: The wireless door lock control system troubleshooting procedure is based on the premise that the power door lock control system is operating properly. Check the power ...

    Customize Parameters
    CUSTOMIZE PARAMETERS CUSTOMIZE WIRELESS DOOR LOCK CONTROL SYSTEM HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, first make sure that the fun ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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