So I already have two working cut keys programmed to the car, but my wifes keyless entry has stopped working.I assume it is the battery,With the posts i have read it says i have a time limit on battery replacement? What size battery is it? and once new battery is in. do i have to reprogramme fob..With the million posts on the subject I'm a little confused

 

CR2032 is the replacement battery. Once you change the battery, the remote should work again.

Good luck!