How to Jump Start a Hyundai Tucson Plug-in Hybrid

1. Park the vehicles close enough for the cables to reach without letting them touch, and keep clear of fans and moving parts.
2. Turn off all electrical devices, put both vehicles in P (Park), set the parking brake and turn both vehicles OFF.
3. Connect one jumper cable to the red, charging terminal inside the engine compartment fuse panel (1).
4. Connect the other end of that cable to the red, positive (+) battery/jumper terminal of the assisting vehicle (2).
5. Connect the second cable to the black, negative (-) battery/chassis ground of the assisting vehicle (3).
6. Connect the other end of the second cable to the black, negative (-) chassis ground of your vehicle (4).
7. Start the assisting vehicle, run it at about 2,000 RPM for a few minutes, then start your vehicle.
8. Disconnect the cables in exact reverse order: (4), (3), (2), then (1).

• After starting, run the vehicle in ready mode stopped and/or drive it for 30 minutes total to fully charge the 12 V battery.
• Do not jump start another vehicle with this hybrid; it will damage the 12 volt lithium battery.
• If it will not start after a few attempts, it probably needs service.

Source: 2026 Hyundai Tucson Plug-in Hybrid owner's manual, PDF pages 547, 544. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.