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 MANUALSTOYOTA2025HIGHLANDER XLE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 32 (SMART KEY SYSTEM (FOR START, HV) - DIAGNOSTICS - INTRODUCTION (1 OF 2))
2025 Toyota Highlander XLE, 4WD
Section 32 (Smart Key System (For Start, HV) - Diagnostics - Introduction (1 Of 2))
2025 Toyota Highlander XLE, 4WDSECTION Section 32 (Smart Key System (For Start, HV) - Diagnostics - Introduction (1 Of 2))
WARNING: This page is about a different variant/trim than selected.
- SMART KEY SYSTEM (for Start Function, HV Model)
- Precaution [12/2019 - 10/2021]
- Precaution [10/2021 - 10/2022]
- Precaution [10/2022 - 11/2023]
- Precaution [11/2023 - ]
- Parts Location [12/2019 - 10/2021]
- Parts Location [10/2021 - 11/2023]
- Parts Location [11/2023 - ]
- System Diagram [12/2019 - 10/2021]
- System Diagram [10/2021 - 11/2023]
- System Diagram [11/2023 - ]
- How To Proceed With Troubleshooting [12/2019 - 10/2021]
- How To Proceed With Troubleshooting [10/2021 - 11/2023]
- How To Proceed With Troubleshooting [11/2023 - ]
- Customer Problem Analysis Check [12/2019 - 10/2021]
- Customer Problem Analysis Check [10/2021 - 11/2023]
- Customer Problem Analysis Check [11/2023 - ]
- Check For Intermittent Problems [12/2019 - 11/2023]
- Check For Intermittent Problems [11/2023 - ]
- Operation Check [12/2019 - 10/2021]
- Operation Check [10/2021 - 11/2023]
- Operation Check [11/2023 - ]
- Registration [12/2019 - 10/2021]
- Registration [10/2021 - 11/2023]
- Registration [11/2023 - ]
- Customize Parameters [12/2019 - 11/2023]
- Customize Parameters [11/2023 - ]
- Problem Symptoms Table [12/2019 - 10/2021]
- Problem Symptoms Table [10/2021 - 11/2023]
- Problem Symptoms Table [11/2023 - ]
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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.