How to Jump Start a Cadillac LYRIQ

1. Check that the other vehicle has a 12-volt battery with a negative ground system.
2. Park the vehicles close enough for the cables to reach, but not touching, set both parking brakes and put both in P (Park).
3. Turn off both vehicles, unplug unneeded accessories, and switch off the radio and unneeded lights.
4. Open the hood, pull the handle to release the clips, and remove the cover over the battery terminals.
5. Check that the jumper cables have no loose or missing insulation.
6. Connect one end of the red positive (+) cable to the discharged battery positive (+) terminal, keeping the other end off metal.

• The manual's connection order is: discharged battery positive (+), good battery positive (+), good battery negative (−), then discharged battery negative (−) grounding point.
• Connecting or removing the cables in the wrong order can cause electrical shorting and damage the vehicle.
• The provided pages end after the first cable connection; the remaining steps are not shown.

Source: 2026 Cadillac LYRIQ owner's manual, PDF pages 327, 328. 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.