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.
2021 Hyundai Ioniq Plug-In Hybrid LimitedFACTORY OEM SERVICE PROCEDURE
Special Service Tools
| Item | Illustration | Application |
|---|---|---|
| Fuel Pressure Gauge (09353-24100) |
Measuring the fuel line pressure | |
| Fuel Pressure Gauge Adapter (09353-02100) |
Connection between the high pressure fuel pump and the fuel feed line | |
| Heated Oxygen Sensor Socket Wrench (09392-1Y100) |
Removal and installation of the heated oxygen sensor * SST No. 09392-2H100 model also can be used for removing the Heated Oxygen Sensor. |
|
| Torque Wrench Socket (09314-3Q100) or (09314-27130) (19 mm) |
Removal and installation of the high pressure fuel pipe | |
| Injector Combustion Seal Guide & Sizing tool (09353-2B000) |
Installation of the injector combustion seal | |
| Fuel Pump Plate Cover Wrench 09310-B8100 |
Removing and installation fuel pump plate cover |
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.