DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0132-87: Lost Communication with Suspension Control Module "A" Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0168-87: Lost Communication with Vehicle Security Control Module Missing Message; DTC U0198-87: Lost Communication with Telematic Control Module "A" Missing Message; DTC U023B-87: Lost Communication with Image Processing Module "B" Missing Message; DTC U0265-87: Lost Communication with Image Processing Sensor A Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1000-49: CAN Register Fixing Internal Electronic Failure; DTC U1110-87: Lost Communication with Intuitive Parking Assist Module Missing Message [12/2024 - ]: Procedure

2025 Toyota 4Runner SR5, 4WDSECTION Procedure
  1. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Navigation System > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR DTC 

    Pre-procedure1

    • Turn the ignition switch off.
    • Turn the ignition switch to ON and wait for 45 seconds or more.
    • Check for DTCs.

      Body Electrical > Navigation System > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      U0100-87, U0129-87, U0132-87, U0140-87, U0155-87, U0164-87, U0168-87, U0198-87, U023B-87, U0265-87, U0293-87, U1000-49 or U1110-87 is output B
      U1000-49 is output C

    Post-procedure1

    • None

    Result: 

    GO TO HOW TO PROCEED WITH TROUBLESHOOTING 

    Refer to METHOD TO SIMULATE PROBLEM SYMPTOMS [12/2024 - ]

    Result: 

    REFER TO "CAN COMMUNICATION SYSTEM". Refer To  CAN COMMUNICATION SYSTEM (FOR GASOLINE MODEL)  , or Refer To  CAN COMMUNICATION SYSTEM (FOR 1MOTOR-HEV MODEL) 

    Result: 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [12/2024 - ]

RENDER: 1.0x

NO RELATED

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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.