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]PROCEDURE

2025 Toyota Highlander Hybrid XLE

DTC U0300-57: Internal Control Module Software Incompatibility Invalid/Incompatible Software Component [12/2019 - 09/2020]: Procedure

2025 Toyota Highlander Hybrid XLESECTION Procedure

GO TO PRE-COLLISION SYSTEM
HINT:

If DTC U0300-57 is output by the dynamic radar cruise control system, perform troubleshooting for the pre-collision system.

Refer to DTC U0300-57: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [12/2019 - 09/2020]

Result

Proceed to

NEXT

Result:

NEXT

END

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.