Neither one of my remotes work 1 I used all the time, the other seldom, if ever. on 2006 Chrysler 300

Went to dealer - he said remotes were bad, had to buy another key which didn't work. They now say it is the win module. Is this something I can repair myself? The key cost me $225 and this module another $450!! Car has 100K miles had has been maintained on schedule. Any advise is greatly appreciated. Thank you.

Asked by for the 2006 Chrysler 300
get a 2nd opinion on cost in your area.that is normally the cost though