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Modern key fobs are more convenient than traditional mechanical backup key. They let owners lock and unlock their car and also start it with the push of a button.

But these devices will wear out over time and replacing them could be expensive, says Consumer Reports automotive analyst Mel Yu. Dealerships charge between $50 and $100 to replace fobs, and the programming of them to your vehicle.

How to Replace a Fob

The majority of cars are equipped with key fobs to open doors and start the engine. These devices are a handy addition to our daily lives however, they can be costly to replace if they fail. Fortunately, the majority of problems with key fobs aren't major or complicated and can often be fixed by replacing the battery. This simple step will save you from having to visit a car repair shop or dealership.

If changing the batteries does not work, try reprogramming your remote. Fobs are frequently jostled and buttons can get misaligned. This can stop the device from functioning properly. A professional might also be able to assist you retrain the fob to recognize new signals.

Certain models of cars require special codes to unlock and start the engine. These codes are usually provided only to dealers and licensed locksmiths, who have the tools to program the fobs. The cost of programming the keys is around $200, which includes the cost of an additional mechanical backup key.

Consumer Reports reports that you can save money by purchasing a replacement key fob from the internet or at an auto parts store in your area. However, these keys must be programmed to match the vehicle. This can be done by the dealership or by a locksmith who is licensed however, you'll need proof of ownership to expedite the procedure. You can also determine whether your warranty or insurance will cover the cost of replacing fobs.

Fobs with Keys

Some fobs include a key which is stored inside, while others have an exterior button that allows you to open the doors. If you're looking to change an old fob that is equipped with traditional keys you'll need to go to an automotive locksmith to have it programmed to work with your car.

Key fobs can do numerous tricks including summoning your car to help you locate it when you're in a tight spot. They can also be used to lock your windows, activate an alarm, and even open the boot. Fobs can be found in a variety sizes and shapes. From basic rectangles to rounded models they come in all kinds of sizes and shapes.

Fobs can be priced at $400 or more, and it could be even more costly to have them installed in your vehicle, according to Consumer Reports. If you can't afford to spend that amount, check with your auto insurance or warranty to determine if it covers the cost.

You can save money if your fob does not work properly by replacing the battery. The majority of fob batteries cost $10 or less and are available at hardware stores, big-box retailers, or online. Follow the steps in your owner's manual, or search for YouTube videos that explain how to do it. Test the battery you have purchased and ensure that it is working. If not, you'll have to visit a dealer or licensed locksmith to program the key fob to your vehicle.

Fobs with a remote

Modern electronic key fobs offer convenience and function over traditional manual keys. The technology isn't foolproof and can fail in a variety of ways. If your car's fob begins to fail it is usually the cause. The battery can be replaced for less than $10 in an in-store big-box store or a hardware store. Many automakers offer instructions on how to replace it in the owner's manual. If the fob stops working completely, it's likely time to replace one.

While replacing a fob may cost a lot, some DIYers save money by purchasing fobs on the market online or from an auto-parts retailer and having them professionally programmed by a mechanic or locksmith. Professionals may charge a flat fee of $100 to $200 to program the fob to your vehicle, according to CR.

BimmerTech provides this service. Then, you can get an entirely new fob fitted and connected to your car to ensure that only the correct driver profiles are linked to it. This will keep your partner or children from accidentally altering the settings of your car, such as the position of your mirror or the climate control. You can also use the fob to start your car.

Fobs with a Combination Key

Some fobs can do more than simply lock and unlock your car. Some fobs, for example can let you roll down your windows or activate and automatically park your vehicle.

It's important to check the specifications of aftermarket key fobs online to ensure they're compatible with the model of your car. Make sure you check the list of compatible models for each fob before you buy to make sure that it will work.

If you have a newer car, it's usually best to contact the dealer for replacement key fobs. These typically have to be programmed to work with the vehicle by a qualified technician and it's not uncommon for a large cost to be tagged.

Some department stores stock replacement fobs for popular models. They are not guaranteed to work and may need professional programming or a mechanical backup key laser-cut in order to function. Ultimately, the most reliable option is to use an auto locksmith who will provide a guarantee on their products and services. This is the quickest method to obtain a functional fob in the event that you lose it or get it stolen. They also have the necessary equipment to cut and create a replacement fob fast.