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 MANUALSHYUNDAI2017SONATA PLUG-IN HYBRIDREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMGENERAL INFORMATION (ENGINE ELECTRICAL SYSTEM) (PHEV)
2017 Hyundai Sonata Plug-In Hybrid
General Information (Engine Electrical System) (PHEV)
2017 Hyundai Sonata Plug-In HybridSECTION General Information (Engine Electrical System) (PHEV)
- General Safety Information and Caution
- Safety Precaution
- Precautions To Take Before Servicing High Voltage System
- Personal Protective Equipment
- Precautions To Take When Handling Power Cable
- Precautions To Take When Handling (High Voltage Battery)
- Precautions In Case Of Fire On (High Voltage Battery) System
- Precautions In Case Of (High Voltage Battery) Gas Or Electrolyte Leakage
- Precautions When Handling The Vehicle After An Accident
- Preparations When Servicing The Accident Vehicle
- Precautions In Case HEV Is Left Unattended For A Long Period
- Hybrid Vehicle Refrigerant Recovery/(Charging Precautions)
- Safety Precaution
- High Voltage Shut-off Procedures
- Specifications
- Special Service Tools
- Troubleshooting
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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.