Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Entry Interior Alarm does not Sound

DESCRIPTION

The smart access system with push-button start (for Entry Function) uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the combination meter assembly via CAN communication and the buzzer sounds.

CAUTION / NOTICE / HINT

NOTICE:

  • The smart access system with push-button start (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart access system with push-button start (for Entry Function) after confirming that the communication systems are functioning properly.

    Click here

  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

    Click here

  • After repair, confirm that no DTCs are output.

PROCEDURE

1.

CHECK ENTRY LOCK OPERATION

(a) Check that the function operates normally.

Click here

Result

Proceed to

Entry function operates normally

A

Entry function does not operate normally

B

A

GO TO METER / GAUGE SYSTEM

B

GO TO OTHER PROBLEM

    Driver Side Door Entry Lock and Unlock Functions do not Operate
    DESCRIPTION If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the driver door or the front door outside handle assembly ...

    Back Door Entry Unlock Function does not Operate
    DESCRIPTION If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Navigation System: Visual Mute Signal Circuit between Radio Receiver and Multi-display
    DESCRIPTION The radio receiver assembly sends a visual mute signal to the multi-display assembly. As a result, a black screen is displayed when the screen changes so that noise and distorted images are not displayed. When an open exists in the circuit, noise and distorted images will be displayed in ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Park / Neutral Position Switch: Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during park/neutral position switch assembly removal/installation are shown below. Necessary Procedures After P ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0132