To replace a remote key fob, go to the dealership where you purchased your car, and ask for a replacement key fob applicable to your car's make, model and year. If you bought your car from a second-hand dealership or a private seller, contact the local authorized dealership that sells your car's brand. This way, you can be sure that the replacement remote key fob you purchase is the right one for your car.
Once you have purchased a replacement key fob, follow the programming instructions set by the manufacturer. Each remote key fob manufacturer uses a different programming process, so confirm that your replacement key fob has a copy of these instructions. If not, ask the dealership to furnish a copy for you.
You may also purchase a replacement key fob from other sources, such as ReplaceMyRemote.com and KeylessEntryRemoteFob.com. To order from these websites, select your car make, model and year from the lists they provide, choose your replacement key fob from a list of results, add the product to your cart and make the purchase.
In general, replacement key fobs bought from dealerships are more expensive than those from aftermarket sellers, such as ReplaceMyRemote.com and KeylessEntryRemoteFob.com. ReplaceMyRemote.com promises prices of up to 80 percent less than dealership prices.