How to Jump Start a Cadillac XT5

1. Check that the other vehicle has a 12-volt battery with a negative ground system, and park the two vehicles so they do not touch.
2. Set the parking brake firmly, put the transmission in P (Park), turn the ignition off, and turn off all lights and accessories in both vehicles.
3. Check that the jumper cables have no loose or missing insulation.
4. Connect one end of the red positive (+) cable to the discharged battery positive (+) terminal, which is under a cover.
5. Connect the other end of the red positive (+) cable to the good battery positive (+) terminal.
6. Connect one end of the black negative (–) cable to the good battery negative (–) terminal.
7. Connect the other end of the black negative (–) cable to the discharged battery negative (–) grounding point.
8. Start the good vehicle and idle it at least four minutes, then try starting the disabled vehicle.

• To remove the cables, reverse Steps 6–9 in exact order, then let the started vehicle idle for several minutes.
• Connecting or removing cables in the wrong order can cause electrical shorting and damage not covered by the warranty.
• If the vehicle will not start after a few tries, it probably needs service.

Source: 2026 Cadillac XT5 owner's manual, PDF pages 316, 317. 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.