carfobbattery

Pontiac Sunfire key fob battery

Every model year listed for the Pontiac Sunfire 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.

  1. 1996Remote (separate)

    2 x CR2016

    Owner's manual: manualslib.com (checked Nov 1, 2026)

    Manual text: “Use two Duracell batteries, type DL-2016, or equivalent.”

    Find CR2016 on Amazon
  2. 1997Remote (separate)

    CR2032

    Owner's manual: manualslib.com (checked Nov 1, 2026)

    Manual text: “use a 3 volt battery, type CR2032, or equivalent.”

    Find CR2032 on Amazon
  3. 1998Remote (separate)

    CR2032

    Owner's manual: manualslib.com (checked Nov 1, 2026)

    Manual text: “use a 3-volt battery, type CR2032, or equivalent.”

    Find CR2032 on Amazon
  4. 1999Remote (separate)

    CR2032

    Owner's manual: manualowl.com and manualslib.com (checked Nov 1, 2026)

    Manual text: “use a three battery, type CR2032, or equivalent.”

    Find CR2032 on Amazon
  5. 2000-2005Remote (separate)

    CR2032

    FCC ID L2C0005T

    Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 1, 2026)

    Find CR2032 on Amazon

Changing the battery

Separate remote fob

  1. This remote is its own fob, separate from the metal key, which makes it one of the easier ones to open.
  2. Look for a screw on the back or a notch on the edge. Remove the screw if present, then twist a coin in the notch to split the case.
  3. Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
  4. Close the fob and test it. If it does not work, open it again and check the cell is seated flat.

This key takes two CR2016 cells. Change both at the same time and stack them the way the old pair sat; mixing a fresh cell with a tired one shortens the life of the new one.

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.

Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.

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