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, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEBLIND SPOT MONITOR SYSTEM - DIAGNOSTIC CODES & CIRCUIT TESTSBLIND SPOT MONITOR SYSTEMDTC U0100-87: LOST COMMUNICATION WITH ECM/PCM "A" MISSING MESSAGE; DTC U0129-87: LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE "A" MISSING MESSAGE; DTC U0131-87: LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE MISSING MESSAGE; DTC U0140-87: LOST COMMUNICATION WITH BODY CONTROL MODULE MISSING MESSAGE; DTC U0293-87: LOST COMMUNICATION WITH HYBRID/EV POWERTRAIN CONTROL MODULE MISSING MESSAGE; DTC U114F-87: LOST COMMUNICATION WITH POWER INTEGRATION MODULE MISSING MESSAGE [12/2024 - ]CAUTION / NOTICE / HINT
2025 Toyota 4Runner SR5, 4WD
Caution / Notice / Hint
2025 Toyota 4Runner SR5, 4WDSECTION Caution / Notice / Hint
NOTE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
RENDER: 1.0x
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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.