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)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSSTOP AND START SYSTEM - DIAGNOSTIC CODES (1 OF 2)STOP AND START SYSTEMDTC U0114-87: LOST COMMUNICATION WITH FOUR-WHEEL DRIVE CLUTCH CONTROL MODULE MISSING MESSAGE [12/2024 - ]TYPICAL MALFUNCTION THRESHOLDS
2025 Toyota 4Runner SR5, RWD
Typical Malfunction Thresholds
2025 Toyota 4Runner SR5, RWDSECTION Typical Malfunction Thresholds
U0100, U115C
| Communication signal | Lost communication with engine control module |
U0101
| Communication signal | Lost communication with TCM |
U0114
| Communication signal | Lost communication with four-wheel drive clutch control module |
U0129
| Communication signal | Lost communication with brake system control module |
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.