Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Operation Check

OPERATION CHECK

CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) OPERATION

NOTICE:

Make sure that the smart access system with push-button start (for Entry Function) has not been canceled before performing this inspection.

(a) Check the entry unlock function (driver door, front passenger door, rear door LH, rear door RH).

(1) Perform a wireless lock door operation to lock the door, touch the unlock sensor built into the backside of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door unlocks.

(2) Inspect the entry unlock detection area. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration and check that the LED (red) of the electrical key transmitter sub-assembly blinks.

(3) With the system in unlock standby mode, grasp the front door outside handle assembly (for driver door) and check that the door unlocks.

(4) Check the unlock response sensitivity. With the system in unlock standby mode, touch the area shown in the illustration and check that the door unlocks.

NOTICE:

If the sensor is touched too quickly or released too slowly, the sensor may not react and the door will not unlock.

HINT:

Inspect the front passenger door, rear door LH and rear door RH using the same procedure.

(b) Check the entry lock function (driver door, front passenger door, rear door LH, rear door RH).

NOTICE:

If the electrical key transmitter sub-assembly is in the vehicle but outside the detection area (on the instrument panel, in the glove box, on the floor) and a door lock operation is performed, the key lock-in prevention function will not operate and the electrical key transmitter sub-assembly will be locked inside the vehicle.

(1) With the door closed and unlocked, touch the lock sensor of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door locks.

(2) Inspect the entry lock operating range. Hold the electrical key transmitter sub-assembly approximately 0.7 to 1 m (2.30 to 3.28 ft.) below the bottom edge of the door glass and approximately 0.3 m (0.984 ft.) from the vehicle as shown in the illustration, touch the lock sensor and check that the door locks.

(c) Check the entry back door open function (back door opener switch).

(1) With the back door closed and locked, press the lock switch of the back door opener switch assembly while carrying the electrical key transmitter sub-assembly and check that the back door opens.

(2) Inspect the entry back door open operating range. Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration, press the open switch of the back door opener switch assembly and check that the back door opens.

(d) Check the entry back door lock function.

NOTICE:

If the electrical key transmitter sub-assembly is in the vehicle but outside the detection area (on the instrument panel, in the glove box or on the floor) and a back door lock operation is performed, the key lock-in prevention function will not operate and the electrical key transmitter sub-assembly will be locked inside the vehicle.

(1) With the back door closed and unlocked, press the lock switch of the back door opener switch assembly while carrying the electrical key transmitter sub-assembly outside of the vehicle and check that the back door locks.

(2) Inspect the entry back door lock operating range. Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration, press the lock switch of the back door opener switch assembly and check that the back door locks.

(e) Check the hands free power back door function (w/ Hands Free Power Back Door).

(1) Inspect the entry back door open operating range. Hold the electrical key transmitter sub-assembly at the same height as the back door opener switch assembly and approximately 0.7 m (2.30 ft.) from the vehicle as shown in the illustration.

(2) With the back door closed, while carrying the electrical key transmitter sub-assembly, kick your leg so that your foot is 0.1 m (0.328 ft.) or closer to the rear bumper surface. Pull your leg away from the sensor and check that the back door begins to open automatically.

(f) Check the hands free close and lock function (w/ Hands Free Power Back Door).

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(g) Check the power back door close and lock function.

(1) With the back door open, press the door control switch while carrying the electrical key transmitter sub-assembly outside of the vehicle and check that the back door closes automatically and then locks.

HINT:

If the door control switch is pressed by a hand which is also holding the electrical key transmitter sub-assembly, the electrical key transmitter sub-assembly may not be detected as in the exterior detection area and the power back door close and lock function may not operate.

(2) Inspect the power back door close and lock operating range. Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration, press the door control switch and check that the back door closes automatically and then locks.

(h) Check power back door reservation lock function.

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

(i) Check the key lock-in prevention function (vehicle interior).

NOTICE:

In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

(1) Turn the engine switch off.

(2) Place the electrical key transmitter sub-assembly on a front or rear seat.

(3) Close all of the doors and make sure they are unlocked.

(4) Touch a door lock sensor and check that the doors do not lock and the key lock-in prevention function buzzer (external) sounds for approximately 5 seconds.

(j) Check the transmitter battery saving function

(1) Press the unlock switch of the electrical key transmitter sub-assembly twice while pressing the lock switch and check that the LED of the electrical key transmitter sub-assembly blinks 4 times and enters transmitter battery saving mode.

(2) Check that the smart access system with push-button start (for Entry Function) does not operate while in transmitter battery saving mode.

HINT:

To cancel transmitter battery saving mode, press a switch of the electrical key transmitter sub-assembly.

(k) Check the entry cancel function.

(1) Cancel the smart access system with push-button start and check that all the functions of the smart access system with push-button start (for Entry Function) no longer operate.

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HINT:

While the smart access system with push-button start is canceled, it is possible to lock and unlock the doors with the wireless function, and the engine can be started by holding the electrical key transmitter sub-assembly near the engine switch.

(l) Check the answer-back function (hazard warning light flashing and buzzer sounding).

KEY DIAGNOSTIC MODE (Using Techstream)

(a) Enter the following menus: Body Electrical / Smart Access / Utility / Communication Check (Key Diag Mode).

(b) Inspect the appropriate item according to the following table.

(c) Bring the electrical key transmitter sub-assembly near the selected electrical key antenna and check that the wireless buzzer sounds.

HINT:

The buzzer sounds in short, repeated beeps for all items except "Overhead + Rear Room"*6. For "Overhead + Rear Room"*6, the buzzer sounds in one long, continuous beep.

(1) *1: Front door outside handle assembly (for driver door)

(d) *5: No. 1 indoor electrical key antenna assembly (front floor)

HINT:

Place the electrical key transmitter sub-assembly on the front seat cushion of the driver seat or front passenger seat.

(e) *6: No. 2 indoor electrical key antenna assembly (rear floor)

HINT:

Place the electrical key transmitter sub-assembly on the rear seat cushion.

(f) *7: Electrical key antenna (outside luggage compartment)

HINT:

Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and align it with the center of the rear of the vehicle as shown in the illustration.

(g) *8: No. 3 indoor electrical key antenna assembly (inside luggage compartment)

HINT:

Place the electrical key transmitter sub-assembly on the luggage room floor.

(h) *9: Amplifier (engine switch)

HINT:

While facing the logo side of the electrical key transmitter sub-assembly toward the engine switch, hold the transmitter near the engine switch.