Car Key Fob keyless entry repairs

Today's key fobs do a lot more than unlock and start cars. This added complexity can cause costly repair costs in the event that it malfunctions.

It's a good idea to know that a majority of fobs are powered by flat watch-style batteries, which can be replaced at home. And you may find that a reset can make your device work again.

Battery Replacement

The most common reason a key fob stops working is because of a dead battery. It's a simple repair, and is worth a try before you go spending money on a new fob. You can purchase a new button cell battery at your local auto parts retailer or hardware store If you own one. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) to find specific instructions on how to remove and replace the battery in your fob.

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. You can wedge your tool into a notch at the bottom of the key fob. You might also want to keep an eye out for tiny pieces that may come loose while you work.

Insert the new battery the same manner as you removed the old one. Make sure the positive (+) side is facing up toward the buttons, and that the negative (-) side of the battery is aligned with the markings in the battery compartment of your fob.

Test the fob to see if it works by pushing a button. If it doesn't, you may have an issue with your vehicle that requires a professional to fix or replace.

Certain key fobs are difficult to open and their contacts may be fragile and easily corrosion-prone. In these instances, a car specialist or a dealer could be the best choice. When replacing a battery, be patient and follow your owner's instructions. You might be able to find the same battery in a big-box store or discounter, however, make sure you read your owner's guide to ensure it is compatible with your car.

Replace the internal key

Most key fobs include an actual mechanical key however, it's hidden within the fob to prevent thieves. If the battery inside the fob goes out, a blank key is left behind, which can be used to open trunks and doors. In some instances, this key can even start certain vehicles. Most people don't know this, but they can save themselves a trip to the dealership by simply replacing the fob battery. The flat watch-style battery is used in most modern fobs. These batteries are easily located at auto parts stores and hardware stores. It is essential to choose the correct type of battery. A wrong type of battery can harm the electronic circuitry and cause the fob to fail earlier.

If the problem persists after replacing the battery, it could be a sign that there is something else going on with your vehicle. If you have an owner's guide and you're not sure, try to determine if there is a reset option available to restore the fob's factory programming. If this doesn't work then you'll need to go to a dealership or an independent shop that specializes in vehicle-security systems and fob programming.

Fobs can also malfunction due to faulty transmitter receivers. They are typically located on the dashboard or next to the steering wheel, and they transmit signals that allow you to open and start your car with the fob. You may need to get closer to the car in order to enable it.

It could be required for a professional to open the case of the fob in order to replace the transmitter. A simple screwdriver is enough to do the job however, some fobs have complicated release mechanisms that require a specialized tool or specialized equipment available only through a dealer. It is 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 working might just need a new battery. Because they are cheap and readily available at pharmacies and home improvement stores, this is the ideal first step before purchasing a new car key fob.

You can also reprogram your key fob by yourself if you follow a few basic steps. The procedure may differ for different vehicles, so you should consult your owner's guide and research your specific model. A key fob may require that the ignition be on when reprogramming. Another key might require the key to be removed and inserted several times.

The basic procedure is simple. First, ensure that the new battery is in place. Then, get in the driver's seat and close all doors EXCEPT for the driver's side door. This will ensure the new fob is communicating with the vehicle in a correct manner. Place the old key in the ignition and turn it on however, don't start the engine. Press the lock button while aiming the fob at the receiver of the transmission. This is usually located on the front above the mirror. The key will signal to the vehicle within a short amount of time that it's being programmed. This can be done by turning the door locks or emitting an audible chime. This process can be tricky and it's crucial to be aware of the timing and not to over-press the key button.

If the key fob does not work after reprogramming, try replacing the batteries. If the issue persists, a visit to your car dealer or locksmiths should be considered. A professional will have the tools and programming equipment necessary to re-program your car's fob, or create the key if required.

Genesky says he's able to program newer fobs for $200-$250, depending on the model of vehicle. He's been denied European models turned away because he lacks the expensive equipment required. Fortunately, most aftermarket fobs can be programmable but it's always recommended to consult a Car key fob repair dealer first to find out what the cost is.

How to get a new fob

If your key fob cannot be repaired, you might have to purchase a new one. Depending on the make and model, the dealer or an auto locksmith may be able to assist. The dealership will likely be the most expensive option for a fob replacement However, they'll have the necessary tools and software needed to program your vehicle correctly. Many locksmiths in independent shops offer a brand new car key fob at an affordable price.

Before you purchase an entirely new device it's recommended to consider resetting your current one. The owner's guide should explain the correct procedure for reset. This is usually an orderly press that reset the factory program.

It's also a good idea to check the owner's manual and warranty information prior to deciding where to go for the replacement of your key fob. If your car's warranty in good standing or you have an auto club or insurance policy that covers bumper to bumper, you may qualify for a reimbursement of the cost of replacing the fob.

The process of getting a fob can be simple enough however finding the best location to do it isn't easy. If you have a relatively new car and want the peace of mind that comes with knowing that your key fobs are in good working condition, you may prefer going to the dealership for this service. If you're looking for an affordable alternative it is usually possible to find a locksmith independent who can provide the same services for a significantly lower price.

If you aren't comfortable handling this kind of work yourself, a professional locksmith may be a great choice. They are trained and equipped to repair or replace car key fobs of all kinds, and can do so quickly. A locksmith can also visit your house or office, which is convenient for many people. They can cut and program keys on the spot in case you've lost them. This is perfect for those who do not like to leave their car unattended.