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)QUICK LOOKUPSDTC INDEXDTC INDEX (1 OF 6)CRUISE CONTROL DTCSLANE CONTROL SYSTEM
2025 Toyota Highlander XLE, FWD
Lane Control System
2025 Toyota Highlander XLE, FWDSECTION Lane Control System
LANE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [12/2019 - 11/2023]
| DTC Code | Description |
|---|---|
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message |
| U0125-87 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message |
| U0126-87 | Lost Communication with Steering Angle Sensor Module Missing Message |
| U0129-87 | Lost Communication with Brake System Control Module Missing Message |
| U0131-87 | Lost Communication with Power Steering Control Module Missing Message |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
| U0235-87 | Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message |
| U0293-87 | Lost Communication with Hybrid Powertrain Control Module Missing Message |
| U0300-51 | Internal Control Module Software Incompatibility Not Programmed |
| U0300-57 | Internal Control Module Software Incompatibility Invalid / Incompatible Software Component |
LANE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [11/2023 - ]
| DTC Code | Description |
|---|---|
| U0100-87 | Lost Communication with ECM/PCM "A" Missing Message |
| U0101-87 | Lost Communication with TCM Missing Message |
| U0126-87 | Lost Communication with Steering Angle Sensor Module Missing Message |
| U0129-87 | Lost Communication with Brake System Control Module Missing Message |
| U0131-87 | Lost Communication with Power Steering Control Module Missing Message |
| U0155-87 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
| U0235-87 | Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message |
| U0293-87 | Lost Communication with Hybrid Powertrain Control Module Missing Message |
| U0300-51 | Internal Control Module Software Incompatibility Not Programmed |
| U0300-57 | Internal Control Module Software Incompatibility Invalid / Incompatible Software Component |
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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.