carfobbattery

Mercury Marauder key fob battery

Every model year listed for the Mercury Marauder 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. 2003Remote (separate)

    CR2032

    FCC ID CWTWB1U331

    Two sites agree: manualowl.com and americankeysupply.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  2. 2004Remote (separate)

    CR2032

    FCC ID CWTWB1U331

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

    Manual text: “one coin type three-volt lithium battery CR2032 or equivalent”

    Find CR2032 on Amazon

Changing the battery

Separate remote fob

  1. The remote is a small standalone unit. You will not need to touch the ignition key at all.
  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. 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.

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.

If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.

Other Mercury models