https://notes.io/w9kf5 Replacement Car Key Fobs Replacement of fobs that are more complex or part of sophisticated security systems for vehicles can be expensive and require specialized equipment, which is typically only available at dealerships. However, replacing the coin-shaped battery typically costs around $10 or as. You can purchase a new battery at big-box stores or hardware stores. Keyless Entry Cars equipped with key fobs permit owners to open or start their cars without having a mechanical key. The fobs typically have batteries, as well as an electronic transponder that communicates with the car's computer to verify ownership. This can deter theft since the vehicle only responds to keys that are registered to it. Fobs have changed, however they are capable of more than opening doors or turning on the car. They can also open a door and call or auto-park a car, and turn the interior lights on. Some even have a GPS built in. These advanced features can be a boon to convenience but could make the fobs more expensive to replace and less tolerant of mishandling. You can choose between three kinds of replacement keyfobs, depending on the model and make of your vehicle. The type you choose will affect the cost and whether you can replace it yourself and if you must go to a dealership for reprogramming. The simplest key fob is a car key that has buttons for remote start and unlocking doors. Some look like a switchblade key and are able to tuck into the shank when not in use to reduce their size. The key fob usually has an RFID verification system to help prevent thieves from stealing by ensuring that the car only responds to a key that is verified. Modern fobs may not be keys at all they are instead wireless transmitters that connect directly with the computer of the car to open doors or activate the starter. They can also activate some features, such as the air conditioning, or the alarm. This kind of key fob replacement can be more expensive than other types and