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Car Key Fob Repairs

Key fobs today are more than just a way to unlock and start vehicles. But that extra complexity can result in costly repairs if one of them breaks.

It's good to know that most fobs are powered by flat watch-style batteries which can be replaced at home. And you may find that a reset can get yours working again.

Battery Replacement

A dead battery is the main reason for a key fob not working. It's a simple fix and worth trying before you purchase the replacement fob. You can pick up a new button cell battery at your local auto part retailer or hardware store If you own one. You can also check the owner's manual (or, if you don't have one, YouTube is full of videos of people who explain how to do it) for specific instructions for opening and replacing the battery in the particular type of fob.

Most fobs come with two halves that snap together -you'll have to gently pry the sides apart to access the battery. You'll require a small flat-bladed screwdriver or another tool with a blade that is thin. You can put your tool into a notch at the bottom of the key fob. You might also want to look for small pieces that could come loose while you work.

When you have your new battery, insert it in the same manner that you removed the previous one. The positive (+) side should face the buttons and the reverse (-) the marks on the battery compartment.

Press a button to test the fob. If it isn't working, there might be a problem with your vehicle that needs to be repaired or replaced by a professional.

Certain key repair shop fobs are difficult to open, and the contacts may be fragile and easily corroded. In these cases you should consult a specialist in your car or dealer may be the best choice. If you need to replace a battery, try to be gentle and follow the instructions that are specific to the owner's manual. You may be able find the same battery at a big-box store or discounter, however, make sure you check the owner's manual to ensure it is compatible with your car.

Replacing the Internal Key

To guard against theft, many key fobs are equipped with a mechanical key hidden inside. If the battery inside a fob dies, a blank key is left behind that can be used to unlock trunks and doors. In some instances, this key can even start certain cars. Most people aren't aware of this, but they can avoid having to go to the dealership by simply replacing the fob's battery. The majority of modern fobs utilize flat watches-style batteries that can be found in auto parts stores and hardware shops. Choosing the right type of battery is crucial however. The wrong type can damage the circuitry and lead to the fob to fail much earlier.

If you change the battery, and 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 a reset procedure that will bring the fob back to factory-setup. If this doesn't work you'll have to visit a dealership or an independent shop that specializes in vehicle security systems and fob programming.

Fobs may also fail due to malfunctioning transmitter receivers. They are typically placed on the dashboard or near the steering wheel, and they transmit signals that allow you to unlock and start your car with the fob. It is possible that you will need to get closer to the car to enable it.

It may be necessary for a professional to remove the case of the fob in order to replace the transmitter. A simple screwdriver can usually accomplish the task however some fobs come with complicated release mechanisms that require a special tool or equipment that is available only through a dealer. It's a good idea to have a qualified mechanic perform this task so you don't break the fob or hurt yourself.

Reprogramming the Key

A key fob that is not functioning simply needs a fresh battery. They are easily available in both pharmacy and home improvement stores and are cheap. This is a great method to start before you purchase a new key fob.

You can also re-program your key fob on your own if you follow the steps below. This process can vary between vehicles, so it is recommended to consult your owner's guide and research the model you have. For example one key fob could require the ignition to be turned on while reprogramming it. One key fob could require the key to be inserted several times.

The basic procedure is simple. First, make sure that the new battery is in place. Then, sit in the driver's seat, and close all doors, excluding the driver's side door. This will ensure the new fob is communicating with the vehicle properly. Then, place the old key back in the ignition and turn it on to the ON position, but do not start the engine. Press the lock button while aiming the fob towards the receiver for transmission. This is usually located on the left side, just above the mirror. The key will inform the vehicle within a short period of time that it is being programmed. This can be accomplished by cycling the door locks or emitting an audible chime. This is a difficult process, so pay close attention to timing and don't over-press the button.

If the key fob does not work after reprogramming it, try using new batteries. If the issue is still there, you might want to visit your local dealer or locksmith. A professional will have all the tools and equipment needed to reprogram your car's fob or design a new one if needed.

Genesky says he can usually program newer fobs for around $200-$250, based on the vehicle. But he's had to refuse customers with European models due to the fact that he doesn't have the expensive equipment required. Fortunately, most aftermarket fobs can be programmed however it's best to talk to an auto dealer first to find out the price.

How to get a new fob

If your key fob can't be repaired, you might have to purchase an entirely new one. Depending on the model and make, an auto locksmith or a dealership might be able to assist. The dealership is likely to be the most expensive option for a replacement fob, but it also has the tools and software required to program your car properly. If you're looking for a cheaper solution, a variety of locksmiths can provide you with an entirely new car key fob for a much more reasonable price.

It is a good thing to try to reset your current device before you make the decision to purchase a new one. The owner's guide should explain the correct method of reset. This is usually an orderly press that reset the factory program.

You should also look over the owner's guide and warranty information to determine whether you can obtain an alternative fob for your key. If your vehicle's warranty is still active or you have an auto club or car insurance policy that covers bumper to bumper, you may qualify for a reimbursement on the cost of a replacement fob.

The process of getting a fob can be simple enough however finding the best location to do it isn't easy. You might want to visit the dealer for this service if have a newer vehicle and want peace of mind knowing that your key fobs are functioning properly. If you're looking for key fob repairs an option that is more affordable, it is often possible to find a locksmith who is independent who can provide the same service for a lower cost.

If you aren't comfortable handling this kind of work yourself, a professional locksmith may be a great option. They are equipped and trained to replace or reprogram car key fobs of all types, and can do so quickly. Additionally, locksmiths is often able to come to your workplace or home to do the job, which can be very practical for some. They can even cut and program keys on-site in case you've lost keys, which is ideal for those who don't like to leave their cars unattended.