How to Jump Start a Hyundai Sonata Hybrid

1. Park the vehicles close enough for the cables to reach without touching, turn off all electrical devices, put both in P (Park), set the parking brake and turn both vehicles OFF.
2. Open the engine hood and remove the engine compartment fuse box cover.
3. Connect one jumper cable to the red, positive (+) jumper terminal of your vehicle (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/jumper terminal 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's engine and let it run a few minutes, then press the 12V BATT RESET button.
8. Start your vehicle within 30 seconds, then disconnect the cables in exact reverse order (4, 3, 2, 1).

• Never connect a cable to the negative (-) jumper terminal of the discharged battery; a spark could make the battery explode.
• After starting (READY indicator on), keep the vehicle in ready mode stopped and/or drive for 30 minutes total to fully charge the 12 V battery.
• Do not jump start another vehicle with this hybrid, and do not push-start it.

Source: 2026 Hyundai Sonata Hybrid owner's manual, PDF pages 444, 445, 446. 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.