How to Jump Start a Hyundai Elantra 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 in 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), then its other end to the black, negative (-) chassis ground of your vehicle (4).
6. Press the 12 V Battery Reset switch, start the assisting vehicle's engine and let it run for a few minutes.
7. Start your vehicle, then drive it or leave it in ready mode outdoors for 30 minutes total to charge the 12 V battery.
8. Remove the cables in exact reverse order: (4), (3), (2), then (1).

• Do not jump start another vehicle with this hybrid; it will damage the lithium ion 12 V battery.
• Use only a 12 V power supply, and never push-start the vehicle.
• If the vehicle will not start after a few attempts, it probably needs service.

Source: 2026 Hyundai Elantra Hybrid owner's manual, PDF pages 437, 438. 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.