How to Get a Honda Spare Key There are numerous options to replace a worn or damaged spare key from Honda. The options you have include the replacement of a key fob, a keyless entry program or a duplicate Honda spare key. Duplicate honda spare key It is not an easy task to obtain a duplicate honda car key replacement jazz key (her explanation) Key. It requires some time and a large amount of cash. This is particularly true if your vehicle is a recent model that isn't easily replaced without costing you a fortune. Modern Hondas come with transponder-based keys. A modern Honda key is equipped with an "immobilizer" system that blocks theft. This is the reason the latest model could cost more than the cost of a few hundred dollars for a duplicate. A replacement key is available from your local Honda dealer. While it is best to have your car transported to a nearby Honda dealer, you can also obtain a replacement key through a company that sells replacement keys at a reasonable cost.