When all car keys are lost, the replacement process depends heavily on the vehicle make, model, year and immobiliser system. Some vehicles require only basic transponder programming, while others may involve advanced ECU communication, BCM access, smart key registration or encrypted security procedures.
Depending on the vehicle, replacement keys may need to be cut from existing locks, key codes or vehicle information.
Many modern vehicles use immobiliser chips that must be correctly programmed before the engine will start.
Push-button start and proximity vehicles often require smart system registration and encrypted communication procedures.
Proof of ownership and identification are required before replacement keys can be programmed.