Car Key Fob Replacement
Many vehicles use key fobs that allow you to lock and unlock doors and allow you to start your vehicle. Typically, replacing a standard key fob requires an appointment at the dealership, which charges according to the vehicle's make.
But Consumer Reports reveals some simple tricks to save you money. Here's how:
Battery

If your key fob stops working, the first thing you need to do is replace its battery. These tiny devices that have taken over the place of traditional keys have more in them than just buttons that unlock and lock your car. They emit a coded sequence of signals based upon how many times you press them. This signal is sent to a receiver in the car, and it locks or unlocks it. Fobs can break down over time as does any other electronic device that you carry around in your purse or pockets.
If you're lucky enough, your new-car dealer will offer replacement key fob batteries compatible with your vehicle. If not, they are available at auto parts stores or even big-box retailers. It is generally recommended to purchase a CR2032 button cell battery which costs from about $2-4 American for a set of two. You'll need to take the old battery from your fob before installing the new one with care to prevent damage to the electronic circuit board.
Some newer fobs have a small physical key stored inside that you can pull out in the event that keys don't open your door or start your engine. While this is a convenient feature, it can be risky for people with the tendency to lose keys. Some people utilize a wireless remote locking system that is based upon an RFID chip that is embedded in the key fob. If you're experiencing issues with your car, contact the manufacturer and inquire if the chip can be reset. You can also contact a locksmith.
If you're able to purchase a replacement key fob at a price you're comfortable with it's possible to do the programming yourself. This is typically a cheaper alternative than purchasing a new key from the dealer. Be aware that not all key fobs from aftermarket are compatible with your vehicle and that many require specialized equipment to be programmed.
Programming
Modern cars are usually equipped with electronic key fobs that let you unlock and start the car remotely. You may be able to program a new key if you lose yours, or if you need one. Instructions are usually available online. The exact procedure will depend on the model of your vehicle. Some owner's manuals contain details on programming. Make sure that your key fob is powered by a new battery before you attempt to reprogramme it. They are cheap and easy to replace but the battery that is exhausted could cause problems with the process. It is also a good idea to close all doors as even one door left open can impact how well the fob functions.
To reprogram a remote key switch off your car and remove the ignition key that was originally used. Press the lock button of the new fob within the same time frame typically between 10 to 30 seconds. The car could respond by turning on the lights, turning off the locks or emitting an audible chime as confirmation that the fob is programmed. Repeat this procedure for any additional keys you'd like to add to the system of your vehicle.
Be aware that this reprogramming technique is only applicable to cars that utilize the same technology. If your vehicle has different types of key fob, or has an ignition key made of metal, it will require specialized programming that can only be performed by a dealer.
You can save money by using an auto locksmith. A lot of dealerships charge a flat rate for this service. They often have the necessary equipment to do the job at a fraction of the cost you'd pay at a dealership. They might even be able to be at your location to complete the work.
Ask the dealer what the service will cost and if they offer a guarantee. Check your warranty or auto club membership or insurance policy to see if they cover any lost fobs. If you've established a good working relationship with your mechanic, they might even be able to inform you of the cost of this service prior to when you make an appointment.
Dealerships
If you've lost your car keys, you could be tempted to visit the dealership for a replacement. Dealerships may charge more than other places and they may not provide the best price. Hardware stores and locksmiths are two other options to replace your key fob. These locations are typically less expensive than the dealership and could save you money.
A car key fob allows you to unlock and start your car without traditional keys made of metal. It's usually a rectangular or oval piece of plastic with buttons that allow you to lock and unlock your car, activate an alarm, or open the trunk. Fobs first became popular in the late 90s and a lot of cars come with them as standard features. They can be a useful way to unlock your car, but they also make it simple for thieves to take your vehicle.
The most commonly used type of car key fob is the push-button starter that is attached to your car's ignition. You can usually find them at the dealership or an auto parts store. Switchblade keys, in which the key is made of metal and encased inside a plastic piece, and keyless entry key fobs are other types of car fobs. The latter are the most popular because they let you unlock and start your vehicle without a physical key.
A lot of dealerships overcharge prices for key fobs since they know that consumers will pay whatever it takes to return their vehicle. While it's not easy to find a cheap replacement for a fob, you can save money by choosing the correct replacement battery and using an alternative method of reprogramming the device.
You can replace your key at an independent locksmith that is not affiliated with a particular car manufacturer regardless of whether you own a traditional, metal key or a smart electronic key. A lot of these places have a wide selection of replacement keys and can cut and program them for less than the dealers. You can use the search engine to locate a locksmith that is independent near you.
Locksmiths
If your key fob is lost, you'll need to hire an expert to replace the item. However, it might not be as expensive as you think, especially when the key fob has an intelligent feature such as an automatic locking system or a remote start button.
Smart keys are used in the majority of modern vehicles to prevent theft. They function by sending an unique security code each when the key is used. The codes aren't stored on the fob itself, but rather in an embedded chip that communicates with the car to unlock doors and also start the engine. Because of this additional layer of security, it's usually only locksmiths who are licensed or dealership technicians that have the tools and know-how to reprogram replacements for these kinds of keys.
It is possible to purchase a new keyfob from a locksmith or hardware store that specializes in car security at a lower cost than the cost you would pay if purchased it from a dealer. But, you'll most likely require an expert to program the fob, which might require the same equipment the dealership employs.
Certain automakers provide instructions for doing-it-yourself fob programming in their user's manuals or on the internet. These steps can be tricky and you may need a second key fob to complete the process. For that reason, it's sensible for owners and lessees alike to have two functioning key fobs before they experience the disappointment of losing one.
If your car has an old-fashioned metal key it is possible to purchase one at the hardware or key cutting store, provided that the metal key wasn't lost along with the fob. Fobs that have a transponder component on both the key shank and the fob are likely to require a professional to program, however, which can add up if you need to have more than one spare or if the key is required to be replaced.
Those who have German cars, for example those that come with the "flip" function that is similar to a switchblade knife may only be able to get replacement fobs from the dealer. The reason for this is that these fobs usually use a specific type of transponder that can only be reset and programmed by the dealer's service department, which is usually the only company that has the tools needed to do so.