No prob. The remotes for those are sealed, btw. You can probably try and bust it open if you need to replace the battery, don't know if they're soldered in or not? We always replace them for customers. How to program additional master key; All doors closed, insert existing master key, lock to on 5 times, 5th time keep it on, open and close drivers door 6 times, remove key, insert new key, switch to on, keep on for more than 60 seconds, remove key, open door to finish procedure. So get your genuine key, get it cut, follow the above and you're all done!