How to Jump Start a Cadillac OPTIQ

1. Check that the other vehicle has a 12-volt battery with a negative ground system, and park the vehicles close but not touching.
2. Set the parking brake on both vehicles and put them in P (Park).
3. Turn off both vehicles, unplug unneeded accessories, and switch off the radio and unneeded lamps.
4. Open the hood, find the battery positive (+) terminal and negative (−) grounding point, and check the cables for damaged insulation.
5. Connect the red positive (+) cable to the discharged battery positive (+) terminal, then to the good battery positive (+) terminal.
6. Connect the black negative (−) cable to the good battery negative (−) terminal, then to the discharged battery negative (−) grounding point.
7. Start the vehicle with the good battery and let it run for a while, then try to start the disabled vehicle.
8. Remove the cables by reversing Steps 8–11 in exact order, then let the started vehicle idle for several minutes.

• The discharged battery positive (+) terminal is under a cover on the driver side; remove the cover to expose it.
• Connecting or removing the cables in the wrong order can cause electrical shorting and damage not covered by warranty.
• If it will not start after a few tries, it probably needs service.

Source: 2025 Cadillac OPTIQ owner's manual, PDF pages 307, 308, 309. 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.