Originally Posted by
BlkCell
That all depends on the locksmith you go to.
1. You have to have the key first. You can find blanks on Ebay
https://www.ebay.com/sch/i.html?_fro...e+key&_sacat=0
there is a link.
2. Your going to need the little transponder in the crossfire key fobs good luck with that one.
3. Could pay a crazy amount and just get 2 new keys done, but it's very rare to find a locksmith that can do both make the key and program it for you. So careful you don't want to get ripped off.
There are three businesses that are guaranteed to get you a working fob, they are mentioned on this forum often. Going to a locksmith who promises to fix you up is a waste of time.
You had best stick to one of the three mentioned on this forum. NeedsWings, SOS, and the Mercedes Swap Shop.
The last seems the cheapest and is reliable.