LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2021 >> RX 350L AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Access System With Push-Button Start (For Entry Function) - Diagnostics - Symptom Tests >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> New Key Registration Warning Message is not Displayed [09/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

New Key Registration Warning Message is not Displayed [09/2015 - ]: Procedure

  1. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Smart Access > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2015 - 12/2017]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2017 - ] 

    Result: 

    See step  2

  2. READ VALUE USING TECHSTREAM (FL DOOR COURTESY SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Door Courtesy SW Front door LH courtesy light switch signal ON or OFF ON: Front door LH open
      OFF: Front door LH closed
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      FL Door Courtesy SW

      Result

      Result Proceed to
      On the Techstream screen, ON or OFF is displayed accordingly. A
      On the Techstream screen, ON or OFF is not displayed accordingly. B

    Result: 

    GO TO LIGHTING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

    Result: 

    See step  3

  3. CHECK WARNING 
    1. With all of the doors closed, lock the doors using the entry lock function and check that the warning message is displayed on the multi-information display.

      HINT: 

      Warning function (electrical key transmitter sub-assembly is locked inside the vehicle)

      Refer to SYSTEM DESCRIPTION [09/2015 - 08/2019] , or refer to SYSTEM DESCRIPTION [08/2019 - ]

      Result

      Result Proceed to
      The warning message is displayed on the multi-information display. A
      The warning message is not displayed on the multi-information display. B

    Result: 

    GO TO METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

    Result: 

    See step  4

  4. REGISTRATION 
    1. Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.

      Refer to REGISTRATION [09/2015 - 08/2019] , or refer to REGISTRATION [08/2019 - 07/2021] , or refer to REGISTRATION [07/2021 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK MULTI-INFORMATION DISPLAY 
    1. With all of the doors closed, lock the doors using the entry lock function.
    2. Unlock the doors using the entry unlock function, open the driver door and check that the warning message is displayed on the multi-information display.

      HINT: 

      Warning function (An electrical key transmitter sub-assembly has been registered)

      Refer to SYSTEM DESCRIPTION [09/2015 - 08/2019] , or refer to SYSTEM DESCRIPTION [08/2019 - ]

      Result

      Result Proceed to
      The warning message is displayed on the multi-information display. A
      The warning message is not displayed on the multi-information display. B

    Result: 

    END (10 DAYS MAY HAVE ELAPSED SINCE AN ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS REGISTERED) 

    Result: 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]  , or refer to  REMOVAL [08/2019 - ]