If all the locks worked off of one key, then take the lock from the trunk (easiest one to take out) and see what the key code is, then call Santa Monica Lock & Safe (310-450-5101) and they can make a key off of the code (they have all the codes to our cars), and if you want, a valet key as well. Last time they charged me around $30 for the first key and copies are cheaper. You may have to prove that you are the owner though!! Merdad