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 & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASBLIND SPOT MONITOR SYSTEM - DIAGNOSTIC CODES & CIRCUIT TESTSBLIND SPOT MONITOR SYSTEMDTC U0100-87: LOST COMMUNICATION WITH ECM/PCM "A" MISSING MESSAGE; DTC U0129-87: LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE "A" MISSING MESSAGE; DTC U0131-87: LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE MISSING MESSAGE; DTC U0140-87: LOST COMMUNICATION WITH BODY CONTROL MODULE MISSING MESSAGE; DTC U0293-87: LOST COMMUNICATION WITH HYBRID/EV POWERTRAIN CONTROL MODULE MISSING MESSAGE; DTC U114F-87: LOST COMMUNICATION WITH POWER INTEGRATION MODULE MISSING MESSAGE [12/2024 - ]DESCRIPTION
2025 Toyota 4Runner SR5, RWD
DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U114F-87: Lost Communication with Power Integration Module Missing Message [12/2024 - ]: Description
2025 Toyota 4Runner SR5, RWDSECTION Description
These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may also be stored for other systems.
| 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 | Blind Spot Monitor "B" | B |
| U0129-87 | Lost Communication with Brake System Control Module "A" 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 | Blind Spot Monitor "B" | B |
| U0131-87 | Lost Communication with Power Steering Control Module Missing Message | Lost communication with power steering ECU (rack and pinion power steering gear assembly) | CAN communication system | Blind Spot Monitor "B" | B |
| U0140-87 | Lost Communication with Body Control Module Missing Message | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system | Blind Spot Monitor "B" | B |
| U0293-87 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Lost communication with hybrid vehicle control ECU | CAN communication system | Blind Spot Monitor "B" | B |
| U114F-87 | Lost Communication with Power Integration Module Missing Message | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system | Blind Spot Monitor "B" | B |
- *1: for Gasoline Model
- *2: except Gasoline Model
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.