A spare request and all keys lost need different preparation
With a usable key remaining, you may be planning another for everyday use or a spare. Keep the working key available and describe the function you want to add. If none remain, explain that immediately; the process and needed parts may differ.
A key blade, remote and starting function may behave differently. Tell us what still operates instead of describing every fault as a dead key. Keep a damaged key until you have discussed whether it is relevant to the assessment.
Compatibility is specific to the vehicle and key system. Ask what can be supported for your exact model and whether the proposed work includes any programming. The automotive service page helps if the immediate problem is simply getting back into the car.
