carfobbattery

Hyundai Genesis Coupe key fob battery

6 of the 9 model years listed for the Hyundai Genesis Coupe 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. 2008-2009Unknown

    Not confirmed yet

  2. 2010-2011Smart key

    CR2032

    FCC ID SY5HMFNA04

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

    Find CR2032 on Amazon
  3. 2012Unknown

    Not confirmed yet

  4. 2013Smart key

    CR2032

    FCC ID SY5RBFNA433

    Two sites agree: uhs-hardware.com and americankeysupply.com (checked Nov 2, 2026)

    Find CR2032 on Amazon
  5. 2014Smart key

    CR2032

    FCC ID SY5RBFNA433

    Two sites agree: uhs-hardware.com and americankeysupply.com (checked Nov 2, 2026)

    Find CR2032 on Amazon
  6. 2015Smart key

    CR2032

    FCC ID SY5RBFNA433

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

    Find CR2032 on Amazon
  7. 2016Smart key

    CR2032

    FCC ID SY5RBFNA433

    Two sites agree: uhs-hardware.com and americankeysupply.com (checked Nov 2, 2026)

    Find CR2032 on Amazon

Changing the battery

Smart key (push-button start)

  1. Most push-button fobs hide a metal backup key. Press or slide its catch and draw the key out first.
  2. Look inside the empty key slot for a notch. Put the tip of the metal key or a small flat screwdriver wrapped in tape there and twist gently until the shell splits.
  3. 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.
  4. Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.

Hyundai smart keys usually have a button that releases the mechanical key; a flat tool in the gap then opens the case.

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 Hyundai models