BACAI NEW Remote Key Control Fob 2+1 Button For Hyundai Tucson Elantra 3 Buttons Best replacement for broken or worn keys,or great for an additional key. Key case and key blade only.Not electronic internals. Get blade cut by local locksmith/dealer or swap the blade whit your original. Just cut the key blade,take the internal electronics(include immobilizer/transponder chip) from original remote and placethem to our key shell,then you are ready! This item isn't a remote,it is just a remote key shell case replacement.