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 MANUALSTOYOTA2025HIGHLANDER XLE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEROAD SIGN ASSIST SYSTEM - DIAGNOSTIC CODESROAD SIGN ASSIST SYSTEMDTC U0100-87: LOST COMMUNICATION WITH ECM/PCM "A" MISSING MESSAGE; DTC U0125-87: LOST COMMUNICATION WITH MULTI-AXIS ACCELERATION SENSOR MODULE MISSING MESSAGE; DTC U0129-87: LOST COMMUNICATION WITH BRAKE SYSTEM 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 U0293-87: LOST COMMUNICATION WITH HYBRID POWERTRAIN CONTROL MODULE MISSING MESSAGE [12/2019 - 11/2023]DESCRIPTION
2025 Toyota Highlander XLE, FWD
DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System 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 U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [12/2019 - 11/2023]: Description
2025 Toyota Highlander XLE, FWDSECTION Description
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0125-87 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the yaw rate sensor *1 or airbag sensor assembly *2 and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
| U0129-87 | Lost Communication with Brake System Control Module Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the road sign assist system is on, a communication error between the No. 2 skid control ECU (brake actuator assembly) *1 or skid control ECU (brake actuator assembly) *2 and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
| U0140-87 | Lost Communication with Body Control Module Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the road sign assist system is on, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the road sign assist system is on, a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more. | CAN communication system |
| U0293-87 | Lost Communication with Hybrid Powertrain Control Module Missing Message | 3 seconds or more after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the hybrid vehicle control ECU and the forward recognition camera is detected for approximately 5 seconds or more. | CAN communication system |
- *1: for HV Model
- *2: for 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.