carfobbattery

Lexus CT 200h key fob battery

Every model year listed for the Lexus CT 200h has a proven battery. The most common answer is CR1632. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.

  1. 2011-2017Smart key

    CR1632

    FCC ID HYQ14ACX

    Two sites agree: americankeysupply.com and energizer.com (checked Nov 2, 2026)

    Find CR1632 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. 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. Note which side of the old coin cell faces up (usually the side with the writing), lift it out with a plastic tool, and press the new one in the same way.
  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 CR1632 is 16 mm across and 3.2 mm thick. It is easy to confuse with the 20 mm CR20xx sizes, which will not fit.

Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.

Other Lexus models