How to Jump Start a Buick Lucerne

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 without touching, and set the parking brake on both.
3. Put an automatic transmission in P (Park) or a manual in Neutral, and turn off both ignitions.
4. Unplug unneeded accessories and turn off the radio and all lamps that are not needed.
5. Open the other vehicle's hood, find its positive (+) and negative (−) terminals, and remove the cover from your remote positive (+) terminal.
6. Start the vehicle with the good battery and run the engine for a while.
7. Try to start the vehicle that had the dead battery.
8. To remove the cables, disconnect the black negative (−) cable from the dead-battery vehicle first, then from the good-battery vehicle.

• Your battery is under the rear passenger's seat; use the remote positive (+) terminal under the hood instead.
• If it will not start after a few tries, it probably needs service.
• Connecting or removing the cables in the wrong order can cause electrical shorting and damage.

Source: 2011 Buick Lucerne owner's manual, PDF pages 331, 332, 334. 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.