Energizer Lithium Cr1632 Coin Batteries in the Coin & Button Batteries department at Lowes.com
Amazon.com: (2 Pack) of CR1632 1632 Remote Key Fob Battery Replacement for Lexus Accessories Original OEM (Bundle with Remote Opening Tool) case fits FCC ID HYQ14AAB HYQ14ACX HYQ14AEM ES is LS LX