Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
  • When a symptom indicates that a service is malfunctioning, use the Techstream to check whether the service subscription is active.

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Application Function

Symptom

Suspected Area

Link

Vehicle status cannot be checked using the application.

Proceed to "Remote Service Malfunction"

Vehicle status alerts are not received by the application even if remote notification operation conditions are met.

Proceed to "Remote Service Malfunction"

Vehicle cannot be operated remotely using the application.

Perform remote door lock and unlock registration and check if the problem symptom recurs

Proceed to "Remote Service Malfunction"

Remote Engine Start and Stop Function (Using electrical key transmitter sub-assembly)

Symptom

Suspected Area

Link

Engine does not start by remote engine start function.

Proceed to "Remote Engine Starter does not Operate"

Engine does not stop by remote engine stop function.

Proceed to "Remote Engine Starter does not Operate"

Warning Notification Function

Symptom

Suspected Area

Link

The multi-display screen does not show a warning message even though a warning light turns on or the multi-information display indicates a warning.

Proceed to "Warning Notification Function Malfunction"

The multi-display screen shows a warning message even though no warning lights are on and the multi-information display does not indicate a warning.

Proceed to "Warning Notification Function Malfunction"

The multi-display screen shows a warning message different from the warning light or the multi-information display.

Proceed to "Warning Notification Function Malfunction"

    Utility
    UTILITY CANCEL COMMUNICATION FUNCTION PAUSING HINT: This function is used to cancel communication function pausing mode. (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) ...

    Terminals Of Ecu
    TERMINALS OF ECU HINT: Check from the rear of the connector while it is connected to the components. DCM (TELEMATICS TRANSCEIVER) Terminal No. (Symbol) Wiring Color Terminal Description Cond ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2023 Owners Manual > Adjusting the steering wheel and mirrors: Outside rear view mirrors
    Adjustment procedure 1. To select a mirror to adjust, press the switch. Left Right Pressing the same switch again will put the switch in neutral. 2. To adjust the mirror, press the switch. Up Right Down Left Folding the mirrors (manual type) Push the mirror back in the ...

    Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Rear Door LH Entry Unlock Function does not Operate
    DESCRIPTION If the entry unlock function does not operate for the rear door LH only, but the entry lock function operates, the request code is being transmitted properly from the rear door LH. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU ...

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

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

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