A couple weeks ago, I wanted an extra chipped key for our Jeep, so I looked in the owners manual and there were instructions on how to make a chipped key yourself. All it took was a chipped blank from the locksmith that he cut and then using the two original chipped keys we made a third one by inserting it in the ignition switch and then reomoving it per the owner manual instructions. Now I have a third chipped key for only about $25 cost. So check your owners manual to see if you can make another chipped key yourself for a lot less than $400. The main thing is to go to a good locksmith, not WalMart or one of those places.