Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA20254RUNNER SR5, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEINTUITIVE PARKING ASSIST SYSTEM - DIAGNOSTIC CODES, CIRCUIT TESTS & SYMPTOM TESTSINTUITIVE PARKING ASSIST SYSTEMDTC U0100-87: LOST COMMUNICATION WITH ECM/PCM "A" MISSING MESSAGE; DTC U0114-87: LOST COMMUNICATION WITH FOUR-WHEEL DRIVE CLUTCH CONTROL MODULE MISSING MESSAGE; DTC U0126-87: LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE MISSING MESSAGE; DTC U0129-87: LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE MISSING MESSAGE; DTC U0131-87: LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE MISSING MESSAGE; DTC U0137-87: LOST COMMUNICATION WITH TRAILER BRAKE CONTROL MODULE 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 U0163-87: LOST COMMUNICATION WITH NAVIGATION CONTROL MODULE MISSING MESSAGE; DTC U0164-87: LOST COMMUNICATION WITH HVAC CONTROL MODULE MISSING MESSAGE; DTC U0233-87: LOST COMMUNICATION WITH SIDE OBSTACLE DETECTION CONTROL MODULE "B" 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 POWERTRAIN CONTROL MODULE MISSING MESSAGE; DTC U1103-87: LOST COMMUNICATION WITH STOP AND START CONTROL MODULE MISSING MESSAGE; DTC U1106-87: LOST COMMUNICATION WITH ELECTRIC PARKING BRAKE MODULE MISSING MESSAGE [12/2024 - ]DESCRIPTION
2025 Toyota 4Runner SR5, RWD
DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0114-87: Lost Communication with Four-wheel Drive Clutch Control Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0131-87: Lost Communication With Power Steering Control Module Missing Message; DTC U0137-87: Lost Communication With Trailer Brake Control Module 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 U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0233-87: Lost Communication with Side Obstacle Detection Control Module "B" 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 Powertrain Control Module Missing Message; DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message [12/2024 - ]: Description
2025 Toyota 4Runner SR5, RWDSECTION Description
These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication line.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| U0100-87 | Lost Communication With ECM/PCM "A" Missing Message | Lost communication with ECM | CAN communication system | Clearance Warning | B |
| U0114-87 | Lost Communication with Four-wheel Drive Clutch Control Module Missing Message | Lost communication with 4 wheel drive control ECU | CAN communication system | Clearance Warning | B |
| U0126-87 | Lost Communication with Steering Angle Sensor Module Missing Message | Lost communication with steering sensor | CAN communication system | Clearance Warning | B |
| U0129-87 | Lost Communication With Brake System Control Module Missing Message | Lost communication with skid control ECU (brake actuator assembly)*1 or No. 2 skid control ECU (brake actuator assembly)*2 | CAN communication system | Clearance Warning | B |
| U0131-87 | Lost Communication With Power Steering Control Module Missing Message | Lost communication with rack and pinion power steering gear assembly | CAN communication system | Clearance Warning | B |
| U0137-87 | Lost Communication With Trailer Brake Control Module Missing Message | Lost communication with trailer brake control ECU | CAN communication system | Clearance Warning | B |
| U0140-87 | Lost Communication with Body Control Module Missing Message | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system | Clearance Warning | B |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | Lost communication with the combination meter assembly | CAN communication system | Clearance Warning | B |
| U0163-87 | Lost Communication with Navigation Control Module Missing Message | Lost communication with radio and display receiver assembly | CAN communication system | Clearance Warning | B |
| U0164-87 | Lost Communication with HVAC Control Module Missing Message | Lost communication with air conditioning amplifier assembly | CAN communication system | Clearance Warning | B |
| U0233-87 | Lost Communication with Side Obstacle Detection Control Module "B" Missing Message | Lost communication with blind spot monitor sensor | CAN communication system | Clearance Warning | B |
| U023B-87 | Lost Communication with Image Processing Module "B" Missing Message | Lost communication with parking assist ECU | CAN communication system | Clearance Warning | B |
| U0265-87 | Lost Communication with Image Processing Sensor A Missing Message | Lost communication with rear television camera assembly | CAN communication system | Clearance Warning | B |
| U0293-87 | Lost Communication With Hybrid Powertrain Control Module Missing Message | Lost communication with hybrid vehicle control ECU | CAN communication system | Clearance Warning | B |
| U1103-87 | Lost Communication with Stop and Start Control Module Missing Message | Lost communication with engine stop and start ECU | CAN communication system | Clearance Warning | B |
| U1106-87 | Lost Communication with Electric Parking Brake Module Missing Message | Lost communication with skid control ECU (brake actuator assembly)*1 or No. 2 skid control ECU (brake actuator assembly)*2 | CAN communication system | Clearance Warning | B |
- *1: for Gasoline Model
- *2: except Gasoline Model
HINT:
When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.
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.