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 DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 16 (ENGINE CONTROL SYSTEM (HEV) - DIAGNOSTICS - INTRODUCTION (2 OF 2))
2025 Toyota 4Runner SR5, RWD
Section 16 (Engine Control System (HEV) - Diagnostics - Introduction (2 Of 2))
2025 Toyota 4Runner SR5, RWDSECTION Section 16 (Engine Control System (HEV) - Diagnostics - Introduction (2 Of 2))
WARNING: This page is about a different variant/trim than selected.
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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.