carfobbattery

Pontiac Bonneville key fob battery

7 of the 10 model years listed for the Pontiac Bonneville have 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. 1996-1997Remote (separate)

    Not confirmed yet

  2. 1998Remote (separate)

    CR2032

    FCC ID KOBUT1BT

    Owner's manual: americankeysupply.com and assets.gm.com (checked Nov 2, 2026)

    Manual text: “use one Duracell battery, type DL-2032, or a similar type.”

    Find CR2032 on Amazon
  3. 1999Remote (separate)

    Not confirmed yet

  4. 2000Remote (separate)

    CR2032

    FCC ID KOBUT1BT

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

    Find CR2032 on Amazon
  5. 2001-2005Remote (separate)

    CR2032

    FCC ID KOBLEAR1XT

    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. Find the slot along the edge and turn a coin in it. Go slowly so the clips do not snap.
  3. Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
  4. Reassemble and test from a short distance.

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.

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