carfobbattery

Lexus LC key fob battery

3 of the 9 model years listed for the Lexus LC 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. 2018-2023Smart key

    Not confirmed yet

  2. 2024Smart key

    CR2032

    FCC ID HYQ14FBZ

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

    Find CR2032 on Amazon
  3. 2025Smart key

    CR2032

    FCC ID HYQ14FBZ

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

    Find CR2032 on Amazon
  4. 2026Smart key (electronic key)

    CR2032

    FCC ID HYQ14FBZ

    Owner's manual: manua.ls (checked Nov 1, 2026)

    Manual text: “Items to prepare: Lithium battery CR2032”

    Find CR2032 on Amazon

Changing the battery

Smart key (push-button start)

  1. Find the small release on the edge or back of the fob and hold it while you pull out the metal emergency key.
  2. The gap left by the metal key usually has a pry point. A slow twist with a thin flat tool (tape on the tip saves the plastic) opens the two halves.
  3. Pop the old battery out with a toothpick or plastic pick, not a metal blade, and seat the new one with the + side matching the old one.
  4. Close the case until it clicks all the way round, put the metal key back, then try the buttons and a push-button start.

Lexus smart keys usually hide the metal key behind a release button; the cover opens from the notch next to where the key sat.

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 Lexus models