Yep those key fob batteries can last up to 2 years at most. Both of mine needed new battery in about 2 years. Push button start system requires constant polling and sending out signal, thats why this key fob battery cant last as long as old-styled key fob. The key fob on my 1998 Honda CR-V lasts as long as 10 years or more depending on usage.My first lasted a year and a half, the second only 6 months. Both OE.