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Many cars now use key fobs, which lock and unlock doors and start the car. Typically, replacing a standard fob will require 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 ceases to work the first thing you should do is change its battery. These devices, which have replaced traditional keys replacement for cars, can do more than lock and unlock your car. Depending on the frequency at which you press them, they are constantly sending out the coded signal in a unique sequence that goes to an inside car key fobs replacement receiver to either lock or unlock it. Fobs won't last forever, however as with any other device that spends the majority of its life jostling around in your purse and pockets they may cease to function as they get older.

If you're lucky, your dealer will sell replacement keys fob batteries compatible with your vehicle. If not, you can locate them at a variety of auto parts stores, and at big-box retailers. It is generally recommended to purchase a CR2032 button cell battery which ranges from $2-4 American for a set of two. It is necessary to remove the old one from your fob, and then install the new one carefully to prevent damage to the electronic circuit board.

Some of the newer fobs have a small key that can be pulled out when your keys don't work to open the door or start the car. This is a convenient feature, but it can be risky for people who are prone to losing their keys. Some people use a wireless remote locking system that is based upon an RFID chip that is embedded in the key fob. If you are having trouble with your car, contact the manufacturer and ask if the chip might be reset. You can also contact a locksmith.

If you're able to buy an additional key fob at an amount you're comfortable with, you may be able to program it yourself. This is typically a less expensive option than purchasing a brand new key from a dealer. But, be aware that not all aftermarket replacement key fobs will work with your car and most require specialized equipment for programming.

Programming

The majority of modern cars are equipped with electronic keys that allow you to unlock and start the vehicle remotely. You may be able to create a new key in case you lose yours, or if you need one. Instructions are generally available online. The exact procedure is contingent on the model of your car. Some owner's manuals also include detailed programming information. Make sure that your key fob is equipped with new batteries before you attempt to reprogram it. They are cheap and simple to replace, but an over-charged battery can interfere with the process. It is recommended to close all doors, as even one door left open could affect how well the fob operates.

To reprogram a key fob switch off your vehicle and take the original key from its ignition. Press the lock button on the new fob within a predetermined time frame, usually about 10-30 seconds. The car may respond by turning on the lights, cycling the locks or emitting an audible chime signal as confirmation that the fob has been programmed. Repeat this process for any additional keys you wish to add to your vehicle's system.

This reprogramming method is only applicable on vehicles that utilize the exact same technology. If your vehicle has an alternative key fob or has an ignition key that is distinct and requires specific programming. This is only possible through a dealer.

A lot of dealerships offer this service for a flat price, but you might be better off making contact with an automotive locksmith. They typically have the equipment to do the job at a fraction of the cost you'd pay at a dealership. They might even be able to visit you to complete the work.

Ask the dealer about the service will cost of replacement car key and if they provide an assurance. Also, check your new-car warranty or auto club membership, or insurance policy on cars to see whether it covers any lost fobs or malfunctions related to them. If you've established a good working relationship with your mechanic, he might even inform you of the cost of this service prior to when you make an appointment.

Dealerships

You might be enticed, when you lose your keys to visit a dealership to get them replaced. But dealerships often charge more than other locations for this service, and might 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 dealerships, and can save you money.

A car key replacements for cars fob lets you to unlock and start your car without traditional keys made of metal. It's a rectangular or oblong piece of plastic with buttons to lock and unlock your vehicle, set off an alarm, or open the trunk. Fobs were first introduced in the '90s and a lot of cars have them as standard features. They're a great way to open your car keys replacements, but they can also make it easier for thieves to steal it.

The most commonly used type of car key fob is the one with a push-button start that is attached to your car's ignition. You can typically find these at the dealership or an auto parts store. Switchblade keys, in which the metal key is enclosed in a plastic piece and keyless entry key fobs are also kinds of car fobs. They are the most popular since they allow you to unlock and start your car without physical key.

Many dealerships inflate prices for key fobs since they know consumers will pay whatever it takes to get their vehicle back. While it's not easy to find a reasonable replacement fob, you can save money by choosing the right replacement battery and employing a different method of reprogramming the device.

You can replace your key with an independent locksmith who is not affiliated with a specific car manufacturer regardless of whether you have traditional metal keys, or a smart, electronic key. There are many locksmiths that offer a variety of replacement keys and are able to cut and program them for less than dealers. You can also use a search engine to locate an independent locksmith in your area.

Locksmiths

If your key fob goes missing, you'll likely need to hire a professional to replace it. It might not be as costly as you think if your key fob has some sort of smart feature, like remote start or automatic locking.

Smart keys are utilized in most modern cars to stop theft. They work by sending an unique security code each time the key is pressed. These codes aren't stored on the fob itself but instead in an embedded chip that communicates with the vehicle to open doors and start it. Because of this additional layer of security, it's only locksmiths who are licensed or dealership technicians who have the equipment and know-how to reprogram replacements to these types of keys.

You might be able to purchase a new keyfob at a locksmith or hardware store that specializes in car security for less money than you would pay if you bought it through a dealer. However, you'll probably have to hire an expert to program the fob, which might require the same equipment that the dealership employs.

Some automakers offer instructions for do-it-yourself key fob programming on their websites or in their owner's guides. The steps aren't easy and you may require a second key fob to complete the procedure. It is advisable for both the owners and tenants to have two key fobs working before they lose one.

If your car has a traditional key shank in addition to a smart key that you can purchase a spare key at a key or hardware cutting shop for a reasonable price and assuming that the original metal key doesn't get lost as is the fob. Fobs with a transponder element on both the key shank as well as the fob are likely to require professional programming however, and this can increase the cost if you need to have more than one spare or if the key needs to be replaced.

Those who have German cars, for example, that have a "flip" function, which is akin to a switchblade knife might only be able to get replacement fobs from the dealership. This is because these fobs use transponders that can only be reset or reprogrammed by the service department of the dealer.