we do provide the key fob programming for chrysler 300 charger, which is located in the WCM module.

Hi eames45 you should be able to do this fuction on the wcm or wireless module you will need a 4 digit pin code from chrysler to be able to do this it will change the vin number and program your key althogh i have had problems doing this lately with this new updates version 4.10 does it with no problem also if you try more than 3 times the system wil lock and you will have to leave the key in the ignition for a long period of time cant remember how long check the manual if this is your case on more thing on crysler if you happen to change the pcm to avoid having to get a code for the programming of the immobilezer what you do is disconect your immobilizer turn key on change the vin number in pcm fucntions turn key off connect immobilezer and start the car this is only when replacing pcm that i know off i hope i was of some help to you or others good day.