How to Jump Start a Cadillac XT4

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), and turn the ignition off with all lights and accessories off.
3. Connect one end of the red positive (+) cable to the discharged battery positive (+) terminal, which is under a cover.
4. Connect the other end of the red positive (+) cable to the good battery positive (+) terminal.
5. Connect one end of the black negative (–) cable to the good battery negative (–) terminal.
6. Connect the other end of the black negative (–) cable to the discharged battery negative (–) terminal on the driver side shock tower.
7. Start the engine of the vehicle with the good battery and let it idle for at least four minutes.
8. Try to start the vehicle with the dead battery; if it will not start after a few tries, it probably needs service.

• To remove the cables, reverse Steps 6–9 in exact order, then let the started vehicle idle for several minutes.
• Inspect the jumper cables first; do not use cables with loose or missing insulation.
• Connecting or removing the cables in the wrong order can cause electrical shorting and damage not covered by the warranty.

Source: 2025 Cadillac XT4 owner's manual, PDF pages 291, 292, 293. 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.