How to Jump Start a Ford Fiesta

1. Connect the positive (+) jumper cable to the positive (+) terminal of the discharged battery.
2. Connect the other end of the positive (+) cable to the positive (+) terminal of the booster vehicle battery.
3. Connect the negative (-) cable to the negative (-) terminal of the booster vehicle battery.
4. Make the last negative (-) connection to an exposed metal part of the stalled engine, away from the battery and fuel injection system, or to a ground connection point if available.
5. Start the booster vehicle engine and keep speed between 2000 and 3000 RPM, then start the disabled vehicle.
6. Run both engines for three more minutes, then remove the cables in reverse order and let the engine idle at least one minute.

• Removal order: negative (-) cable from the disabled vehicle, negative (-) from the booster battery, positive (+) from the booster battery, positive (+) from the disabled battery.

Source: 2019 Ford Fiesta owner's manual, PDF pages 166, 167. 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.