2010 10 Chrysler 300 Remote & Key Combo - 4 Button Programming instructions not included. This device requires programming by your local dealer or locksmith. The actual procedure takes a few seconds to complete and many dealerships will do it for free as a courtesy. If your dealer does charge a fee, local locksmiths usually charge much less to remain competitive. Key Cutting/Programming: Programming this key requires 2 working keys. If you do not have 2 working keys, you will need to have the key programmed at a locksmith or dealership.