Fast Key battery replacement for 07 outlander XLS

Last night when I started the Outie I got a message saying that my fast key battery was low so I check in the manual to see the type of battery I need. It say CR1620, go to the store to get it get back home open up the key to find out that it's a CR2032 and that the CR1620 is probably for the other model that do not have the Fast key system but in the manual they make you think it's the same ! So if you need a replacement battery for your 07 Outlander Fast Key get a CR2032 cost me 4.29$ at the store and 1min to change it !