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The Best Advice You'll Ever Get About Car Key Fob Repair
Car Key Fob Repairs

Today's key fobs do a lot more than unlock and start cars. However, that added complexity can add up to costly repairs if one of them breaks.

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

Battery Replacement

The most frequent reason why the key fob ceases to function is due to the battery being dead. It's a simple repair, and is worth trying before you go spending money on a new key fob. Take your car to a local auto parts store or hardware retailer that sells button cell batteries and purchase the replacement. You can also check the owner's manual (or in the event that you don't have one, YouTube is full of videos from people who show you how to do it) for specific instructions for opening and replacing the battery on the specific type of fob you have.

You'll need to gently pull away the sides of the majority of fobs in order to access the battery. You'll usually need a small screwdriver or a different tool that has a flat, thin blade. It's a good idea to look for a notch on the bottom of the fob which you can use to put your tool in between. It is also advisable to keep an eye out for small pieces that may fall off while working.

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

Test the fob to see whether it functions by pressing a button. If it isn't working, there could be a problem in your vehicle that requires to be repaired or replaced by a professional.

Some key fobs require special tools to open, and the contacts inside can be fragile and easily corroded. In these cases, a car specialist or dealer may be the best choice. When replacing a battery, be gentle and follow the owner's manual. You might be able locate a comparable battery at a discounter store or a big-box retailer however, you'll need to consult your owner's manual to make sure that it matches your car.

Replace the internal key

Most key fobs contain a physical mechanical key, but it's hidden inside the fob to stop thieves from getting. When the battery in the fob goes out, a blank key is left behind that can be used to open doors and trunks. In some cases the key could even start certain vehicles. Most people don't realize they can avoid a trip to the dealership by replacing the fob batteries. The flat watch-style battery is found in the majority of modern fobs. These batteries are easily found at hardware stores and auto parts stores. Using the correct type of battery is crucial however. A bad battery can damage the electronic circuitry and cause the battery to fail earlier.

If you change the battery and find the issue is still there, it could be a sign that something else is happening with your car. Check your owner's manual to see if there's an option to reset the fob and bring the fob back to the factory program. If this doesn't work, you'll have to visit a dealership or independent shop that specializes security systems for vehicles and key fob programming.

Fobs may also fail because of faulty transmitter receivers. They are typically located close to the steering wheel or in the dashboard. They transmit signals to allow you to unlock your vehicle and start it using the fob. If you're having to get closer and closer to your vehicle to be able to make it work, there's a high chance that the transmitter isn't working.

A professional might have to open the fob's case to replace the transmitter. A simple screwdriver is usually enough to do the trick, but some fobs require a specialized tool or equipment that can only be purchased at a dealer. This task must be handled by a certified mechanic in order to avoid damaging the fob and yourself.

Reprogramming the Key

Most of the time, a key fob that isn't working simply requires a new battery. Because they are cheap and readily available at pharmacies and home improvement stores, it's an excellent first step prior to purchasing a new car key fob.

You can also re-program your key fob yourself by following the steps below. This process varies between vehicle brands, so it's essential to consult your owner's manual and study the specifics of the model you own. For example one key fob could require that the ignition be switched on while reprogramming the key. Another might need the key to be removed and inserted multiple times.

The basic procedure is simple. Make sure the battery is securely in place. Close all doors except the driver's door. This will ensure that the new fob is communicating with the vehicle correctly. Insert the old key into the ignition, then turn it on but do not start the engine. Then press the lock button on the fob while aiming it at the transmission receiver, which is typically located in the front of the car above the mirror. Within a short time frame the key will signal to the vehicle that it's programmed by turning off the doors' locks or generating the sound of a chime. This is a challenging process, so pay attention to the timing and avoid pressing too hard the button.

If the key fob doesn't function after reprogramming, you can try using a new battery. If the problem persists, a visit to your dealer for your car or a locksmith is a good idea. A professional will have the tools and equipment necessary to re-program your car's fob, or create a new key if it's needed.

Genesky says that he can program newer fobs between $200 and $250, depending on the vehicle. He's been denied European models turned away because they don't have the equipment required. Fortunately, most aftermarket fobs can be programmable but it's always recommended to consult the dealer of your choice first to determine the price.

How to get a new fob

If your key fob is beyond repair, you might need to get a new one. Depending on remote key fob repair and model, the dealer or an auto locksmith may 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 properly. Numerous locksmiths who are independent provide a new car key fob for a much lower price.

Before you rush to get an entirely new device, it is an excellent idea to try resetting your current device. The owner's guide should explain the correct reset procedure. It is typically the result of a series of button presses which restores the factory settings.

It's an excellent idea to check your owner's manual as well as warranty information before deciding where to go for an replacement fob for your key. If your car is under warranty, or you have a car insurance policy or auto club membership that includes bumper-to-bumper protection, you may be eligible for reimbursement for the cost of an entirely new fob.


Getting a fob is easy enough however finding the best location to get it done can be a challenge. If you own a new car and would like the security from knowing that your key fobs are in working condition, you might be better off going to the dealership to get this service. If you are seeking a less expensive alternative, it's possible to find a locksmith that will provide the same service for a lower price.

If you aren't comfortable handling this type of work on your own A professional locksmith could be a great choice. They are trained and equipped to repair or replace all kinds of car key fobs, and they can often do it quickly. Locksmiths is also able to visit your house or office, which is convenient for a lot of people. They can even cut and program keys on-site when you've lost keys, which is great for those who do not want to leave their vehicles unattended.

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