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Car Key Fob Repair: It's Not As Expensive As You Think
Car Key Fob Repairs

Key fobs today do a lot more than just unlock and start vehicles. However, that added complexity can result in costly repairs in the event that one of them malfunctions.

It's good to know that the majority of fobs are powered by flat watch-style batteries which can be easily replaced at home. It is possible that a simple reset can make your fob work again.

Battery Replacement

The most frequent reason the key fob ceases to function is because of the battery being dead. It's easy to repair and worth a try before you purchase a replacement fob. You can buy an additional button cell battery at your local auto parts retailer or hardware store If you own one. You can also consult the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to remove and replace the battery in your fob.

The majority of fobs have two halves that snap togetheryou'll have to gently pull the sides apart to get to the battery. You'll need a small flat-bladed screwdriver, or another tool with a thin blade. You can put your tool into a notch at the bottom of the key fob. You may also want to look for small pieces that may come loose while you work.

Insert the new battery the same manner as you removed the old one. The positive (+) side should face the buttons, while the opposite side is facing (-), the markings on the compartment for the battery.

Press a button to test the fob. If it doesn't, you may have an issue with your car that requires a specialist to repair or replace.

Some key fobs require special tools to open and close them, and the contacts inside can be fragile and easily corroded. In g28carkeys should consult a specialist in your car or a dealer could be the best choice. When replacing a battery be gentle and follow the owner's guide. You may be able to locate a comparable battery at a discounter or a big-box retailer but you'll have to check the owner's manual to be sure that it matches your car.

Replacing the Internal Key

To guard against theft, many key fobs have an internal mechanical key that is hidden within. If the battery of the fob fails it leaves an internal key blank which can open doors and trunks (and in some cases, even start certain cars). Most people do not realize that they can save a trip to a dealership by replacing the fob batteries. The flat watch-style battery is found in most modern fobs. These batteries are easily located at auto parts stores and hardware stores. Using the correct type of battery is important, however. A wrong type of battery can harm the electronic circuitry, which can cause the fob to fail much faster.

If the problem persists even after you have replaced the battery, it may be a sign that something else is going on with your vehicle. Review the owner's manual of your vehicle to determine if there's an option to reset the fob and restore the fob's the factory program. If this doesn't help you'll have to go to a dealership or an independent shop that specializes in vehicle security systems and fob programming.

Fobs may also fail because of faulty transmitter receivers. They are typically located near the steering wheel or in the dashboard. They transmit signals that enable you to unlock your vehicle and start it using the fob. You may have to move closer to the car to enable it.

It may be necessary for a professional to access the case of the fob in order to replace the transmitter. A simple screwdriver can usually get the job done however some fobs come with complicated release mechanisms that require a specialized tool or specialized equipment that is available only at a dealership. It's best to have a qualified mechanic do this job so that you don't accidentally break the fob or hurt yourself.

Reprogramming the Key


A key fob that is not functioning simply requires a new battery. These batteries are easily found in pharmacy and home improvement stores and are inexpensive. This is a great way to start before buying the new key fob.

You can also re-program your key fob on your own if you follow some basic steps. The procedure may differ for different automobiles, so read the owner's manual and study the specific model of your vehicle. For instance, one key fob may require that the ignition be switched on while reprogramming the key. One key fob could require the key to be inserted several times.

The basic procedure is simple. Make sure the battery is securely in place. Then, get into the driver's seat, and close all doors, with the exception of the driver's side door. This will ensure that the new key fob communicates with the vehicle in a proper manner. Then, place the old key back into the ignition and turn it on to the ON position, but don't start the engine. Next press the lock button on the fob while aiming it at the transmission receiver, which is usually located in the front of the car above the mirror. In a short period of time, the key will indicate to the vehicle that it's programmed by turning off the doors locks or emitting a chime. This is a challenging process, so pay close attention to the timing and avoid pressing too hard the button.

If the key fob doesn't work after reprogramming it, try using new batteries. If the issue persists, you might want to visit your car dealer or locksmith. A professional locksmith will have the tools and equipment required to reprogram your car's fob or design a new one, if required.

Genesky says he can usually program newer fobs for $200 to $250, based on the model of vehicle. Genesky has had European models rejected because they don't have the equipment needed. Fortunately, most aftermarket fobs can be programmed, but it's always best to check with an auto dealer first to find out what their price is.

How to get a new fob

If your key fob can't be repaired, you may need to buy an entirely new one. Based on the make and model, an auto locksmith or a dealership might be able to assist. The dealership is likely to be the most expensive choice for a replacement fob but it will also have the tools and software necessary to program your car correctly. Many independent locksmiths offer a brand new car key fob for a much lower price.

It is a good thing to try to reset the fob you have before you make the decision to purchase a new one. Your owner's manual should outline the correct procedure for reset, which is usually just a series of button pushes that restores the factory settings.

It's also a good idea to check the owner's manual and warranty information before deciding which place to go for the replacement of your key fob. If your vehicle's warranty is in good standing or you have an auto club or insurance policy that covers bumper to bumper you could be eligible for a reimbursement on the cost of replacing the fob.

Finding the right where to purchase a fob can be difficult. You may want to go to the dealer for this service if have a newer vehicle and want peace of mind knowing that your key fobs are functioning correctly. If you are looking for a more affordable alternative, it is possible to find a locksmith that will provide the same service for an affordable cost.

A locksmith who is professional is a good option if you're not comfortable doing this type of work. They're trained and equipped to repair or replace key fobs for cars of all types and do it quickly. Locksmiths is also able to visit your office or home which is a great option for a lot of people. They can even cut and program keys on-site if you have lost keys, which is great for those who prefer not to leave their cars in the dark.

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