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.
2025 Toyota 4Runner TrailhunterFACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2025 Toyota 4Runner TRD Off-Road Premium, 2.4L Eng VIN B), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different variant/trim
- Section 1 (Stop And Start System - Diagnostics - Introduction)
- Section 2 (Engine Control System (Except HEV) - Diagnostic Codes (P148D-P21CF))
- Section 3 (Engine Control System (Except HEV) - Diagnostic Codes (P2226-U115C), Symptom Tests (1 Of 2) & Circuit Tests (1 Of 2))
- Section 4 (Engine Control System (Except HEV) - Diagnostics - Introduction (1 Of 2))
- Section 5 (Engine Control System (Except HEV) - Diagnostic Codes (P0420-P0500))
- Section 6 (Battery / Charging System (Except HEV) - Diagnostic Codes & Symptom Tests)
- Section 7 (Engine Control System (Except HEV) - Circuit Tests (2 Of 2) & Symptom Tests (2 Of 2))
- Section 8 (Engine Cooling System (Except HEV) - Inspection)
- Section 9 (Engine Control System (Except HEV) - Diagnostics - Introduction (2 Of 2))
- Section 10 (Engine Control System (Except HEV) - Diagnostic Codes (P0110-P0195))
- Section 11 (Engine Control System (Except HEV) - Diagnostic Codes (P0010-P0105))
- Section 12 (Smart Key System (For Start, Except HEV) - Diagnostics - Introduction)
- Section 13 (Can Communication System (Except HEV) - Diagnostics - Introduction)
- Section 14 (Stop And Start System - Service Information)
- Section 15 (Automatic Transmission System (Al80E / Al80F) - Service Information (1 Of 2))
- Section 16 (Stop And Start System Cancel Switch Assembly - Service Information)
- Section 17 (Electric Parking Brake System (Except HEV) - Diagnostic Codes, Symptom Tests & Circuit Tests)
- Section 18 (Electric Parking Brake System (Except HEV) - Diagnostics - Introduction)
- Section 19 (ELECTONICALLY Controlled Brake System (Except HEV) - Diagnostic Codes (1 Of 2))
- Section 20 (Stop And Start System - Diagnostic Codes (2 Of 2), Circuit Tests & Symptom Tests)
- Section 21 (Engine Lubrication System (Except HEV) - Inspection)
- Section 22 (Automatic Transmission System (Al80E / Al80F) - Diagnostics - Introduction)
- Section 23 (Automatic Transmission System (Al80E / Al80F) - Service Information (2 Of 2))
- Section 24 (Stop And Start System - Diagnostic Codes (1 Of 2))
- Section 25 (Smart Key System (For Start, Except HEV) - Diagnostic Codes (2 Of 2) & Symptom Tests)
- Section 26 (Smart Key System (For Start, Except HEV) - Diagnostic Codes (1 Of 2))
- Section 27 (ELECTONICALLY Controlled Brake System (Except HEV) - Diagnostic Codes (2 Of 2), Symptom Tests & Circuit Tests)
- Section 28 (Transfer Case System (VF4CM) - Service Information)
- Section 29 (ELECTONICALLY Controlled Brake System (Except HEV) - Diagnostics - Introduction)
- Section 30 (Battery / Charging System (Except HEV) - Diagnostics - Introduction)
- Section 31 (Automatic Transmission System (Al80E / Al80F) - Diagnostic Codes (3 Of 3) & Circuit Tests)
- Section 32 (Can Communication System (Except HEV) - Circuit Tests (3 Of 3))
- Section 33 (Automatic Transmission System (Al80E / Al80F) - Diagnostic Codes (1 Of 3))
- Section 34 (Automatic Transmission System (Al80E / Al80F) - Diagnostic Codes (2 Of 3))
- Section 35 (Engine Control System (Except HEV) - Diagnostic Codes (P0504-P0604))
- Section 36 (Engine Control System (Except HEV) - Diagnostic Codes (P0606-P1378))
- Section 37 (Engine Control System (Except HEV) - Diagnostic Codes (P0195-P0365))
- Section 38 (Transfer Case System (VF4CM) - Diagnostics - Introduction)
- Section 39 (Transfer Case System (VF4CM) - Diagnostic Codes & Circuit Tests)
- Section 40 (Can Communication System (Except HEV) - Circuit Tests (2 Of 3))
- Section 41 (Can Communication System (Except HEV) - Circuit Tests (1 Of 3) & Diagnostic Codes)
Factory Service Tools
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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.