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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER XLE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTAUDIO / VIDEO SYSTEM - DIAGNOSTIC CODES (2 OF 2) & SYMPTOM TESTS (1 OF 2)AUDIO AND VISUAL SYSTEMDTC U0073: SENDING MALFUNCTION (NAVIGATION TO APGS); DTC U0100: ENGINE ECU COMMUNICATION; DTC U0129: VSC (ECB) ECU COMMUNICATION; DTC U0140: LOST COMMUNICATION WITH BODY CONTROL MODULE; DTC U0155: METER ECU COMMUNICATION; DTC U0164: AIR CONDITIONER ECU COMMUNICATION; DTC U0198: LOST COMMUNICATION WITH TELEMATIC CONTROL MODULE; DTC U0265: LOST COMMUNICATION WITH IMAGE PROCESSING SENSOR A; DTC U0293: HV ECU COMMUNICATION; DTC U1110: CLEARANCE SONAR ECU COMMUNICATION [12/2019 - 10/2022]PROCEDURE
2025 Toyota Highlander XLE, FWD

DTC U0073: Sending Malfunction (Navigation to APGS); DTC U0100: Engine ECU Communication; DTC U0129: VSC (ECB) ECU Communication; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Meter ECU Communication; DTC U0164: Air Conditioner ECU Communication; DTC U0198: Lost Communication with Telematic Control Module; DTC U0265: Lost Communication with Image Processing Sensor A; DTC U0293: HV ECU Communication; DTC U1110: Clearance Sonar ECU Communication [12/2019 - 10/2022]: Procedure

2025 Toyota Highlander XLE, FWDSECTION Procedure
  1. CHECK DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

    2. Recheck for DTCs and check that no DTCs are output.

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM 

    for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 10/2022]

    for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.