Buick Envista key fob battery
Every model year listed for the Buick Envista has a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2024Smart key
CR2032
FCC ID HYQ4ESTwo sites agree: manualslib.com and parts.buick.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2025Smart key
CR2032
FCC ID HYQ4ESOwner's manual: manualslib.com and parts.buick.com (checked Nov 1, 2026)
Manual text: “Replace with a CR2032 or equivalent battery.”
Find CR2032 on Amazon - 2026Smart key
CR2032
FCC ID HYQ4ESTwo sites agree: manualslib.com and parts.buick.com (checked Nov 1, 2026)
Find CR2032 on Amazon
Changing the battery
Smart key (push-button start)
- Find the small release on the edge or back of the fob and hold it while you pull out the metal emergency key.
- Use the slot where the metal key sat. Twist, do not lever hard, and work along the seam until the halves separate.
- Before you take the old cell out, look at its face. Put the new cell in with the same side showing, and avoid touching both faces at once.
- Close the case until it clicks all the way round, put the metal key back, then try the buttons and a push-button start.
On many recent GM smart remotes a button on the side releases the key; the slot at the bottom is where the case opens.
A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
Keep spare coin cells away from small children. A swallowed coin cell can burn the throat within hours; if it happens, go to an emergency room at once.