When you program new key does the old one still work??? Because I got rob and I don’t want nobody to still my car...and I have no keys...
The Chrysler dealer WITH the proper equipment can deactivate the key from the car. Possibly even a decent independent Mercedes shop. Make some phone calls.
They can make that a permanent delete or temporary if you think there is a chance of getting the stolen key back. Anyone who wants to dig into the skreem material online can confirm this.