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 HYBRID XLEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASDYNAMIC RADAR CRUISE CONTROL SYSTEM (HV) - DIAGNOSTIC CODES & CIRCUIT TESTSDYNAMIC RADAR CRUISE CONTROL SYSTEM (FOR HV MODEL)DTC U0300-57: INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY INVALID/INCOMPATIBLE SOFTWARE COMPONENT [12/2019 - 09/2020]DESCRIPTION
2025 Toyota Highlander Hybrid XLE
DTC U0300-57: Internal Control Module Software Incompatibility Invalid/Incompatible Software Component [12/2019 - 09/2020]: Description
2025 Toyota Highlander Hybrid XLESECTION Description
If the vehicle information stored in the forward recognition camera does not match the vehicle information sent from the hybrid vehicle control ECU, the forward recognition camera stores DTC U0300-57.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| U0300-57 | Internal Control Module Software Incompatibility Invalid/Incompatible Software Component | The vehicle information sent from the hybrid vehicle control ECU does not match that stored in the forward recognition camera. | Pre-collision system | Forward recognition camera |
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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.