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 - DIAGNOSTICS - INTRODUCTIONSTOP AND START SYSTEMPROBLEM SYMPTOMS TABLE [12/2024 - ]PROBLEM SYMPTOMS TABLE [12/2024 - ]
2025 Toyota 4Runner SR5, RWD
Problem Symptoms Table [12/2024 - ]
2025 Toyota 4Runner SR5, RWDSECTION Problem Symptoms Table [12/2024 - ]
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
STOP AND START SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Stop and start system does not operate | Refer to "Stop and Start System does not Operate" | Refer to Stop and Start System does not Operate [12/2024 - ] |
| Refer to "Stop and Start System does not Operate (Battery Condition)" | Refer to Stop and Start System does not Operate (Battery Condition) [12/2024 - ] | |
| Restarting after a short period of time from an idling stop | Refer to "Restarting after a Short Period of Time from an Idling Stop" | Refer to Restarting after a Short Period of Time from an Idling Stop [12/2024 - ] |
| After engine stops due to stop and start system, engine does not restart | Engine Hood Courtesy Switch Circuit | Refer to Engine Hood Courtesy Switch Circuit [12/2024 - ] |
| Refer to "After Engine Stops due to Stop and Start System, Engine does not Restart" | Refer to After Engine Stops due to Stop and Start System, Engine does not Restart [12/2024 - ] | |
| Failure to restart from IG-ON engine stall | Refer to "Failure to Restart from IG-ON Engine Stall" | Refer to Failure to Restart from IG-ON Engine Stall [12/2024 - ] |
| Stop and start cancel indicator does not operate | Combination meter assembly | Refer to "METER / GAUGE SYSTEM". |
| Indicator circuit (CAN communication system) | Refer to "CAN COMMUNICATION SYSTEM (for Gasoline Model)". | |
| Engine stop and start ECU | Refer to TERMINALS OF ECU [12/2024 - ] | |
| Stop and start indicator does not operate | Combination meter assembly | Refer to "METER / GAUGE SYSTEM". |
| Indicator circuit (CAN communication system) | Refer to "CAN COMMUNICATION SYSTEM (for Gasoline Model)". | |
| Engine stop and start ECU | Refer to TERMINALS OF ECU [12/2024 - ] | |
| Stop and start control cannot be canceled | ECAN terminal voltage | Refer to TERMINALS OF ECU [12/2024 - ] |
| Stop and start cancel switch circuit | Refer to Stop and Start Cancel Switch Circuit [12/2024 - ] |
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.