carfobbattery

Mercury Cougar key fob battery

Every model year listed for the Mercury Cougar has a proven battery. The most common answer is 2 x CR2016. 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

    FCC ID GQ43VT4T

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

    Find CR2016 on Amazon
  2. 1997Remote (separate)

    2 x CR2016

    FCC ID GQ43VT4T

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

    Manual text: “two coin type three-volt lithium 2016 batteries”

    Find CR2016 on Amazon
  3. 1999-2002Remote (separate)

    CR2032

    FCC ID CWTWB1U331 / CWTWB1U345 / CWTWB1U311

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

    Find CR2032 on Amazon

Changing the battery

Separate remote fob

  1. A separate fob has no key blade inside, so it opens with nothing but a coin or a small screwdriver.
  2. Turn it over: some older fobs use one small screw, newer ones just clip. Pry at the seam once any screw is out.
  3. Lift the old coin cell out and press the new one in with matching orientation.
  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.

Other Mercury models