The 10 Scariest Things About Car Key Fob Repair

Car Key Fob Repairs

Today's key fobs can do more than unlock and start vehicles. However, the added complexity could cause high repair bills when one of them fails.

The positive side is that many fobs use flat watch-style batteries that are easy to replace at home. You may find that a simple reset can allow your fob to function again.

Battery Replacement

A dead battery is the main reason for the fob's key not working. This is easy to fix, and it's worth trying before you go spending money on a new fob. You can pick up a new button cell battery at your local auto part retailer or hardware store if you have one. You can also check your owner's manual (or, if you don't have one, YouTube is full of videos from people explaining how to do it) for specific instructions for opening and replacing the battery on the specific type of fob you have.

Most fobs come with two halves that snap together -- you'll need to gently break the sides to access the battery. You'll typically need a small screwdriver or a different tool with a thin, flat blade. It's a good idea to look for a notch on the bottom of the fob which you can use to wedge your tool between. You might also want to watch out for tiny pieces that could break loose as you work.

Once you have your new battery, insert it the same way that you removed the old one. Make sure that the positive (+) side is facing upwards toward the buttons, and that the negative (-) side of the battery is aligned correctly with the markings inside the battery compartment of your fob.

Test the fob to see if it works by pushing the button. If it doesn't work, you may have a problem with your car that requires a professional to repair or replace.

Certain key fobs can be difficult to open, and the contacts may be fragile and easily corrosion-prone. In these situations, the best option is to talk to a expert or a dealer. When replacing a battery be gentle and follow your owner's guide. You might be able to find a battery similar at a big-box retailer or discounter, but make sure you read the owner's manual to ensure it is compatible with your vehicle.

Replacing the Internal Key

To prevent theft, most key fobs are equipped with a mechanical key hidden inside. When the battery in a fob dies, a blank key is left behind, which can be used to unlock doors and trunks. In some cases it is possible to start certain cars. Most people aren't aware of this however they could save themselves having to go to the dealership by simply replacing the fob's battery. Most modern fobs use flat watch-style batteries that are readily available in auto parts stores and hardware shops. It is important to use the correct type of battery. A wrong battery can harm the circuitry and lead to the fob's failure earlier.

If the issue persists after replacing the battery, it may be an indication that there is something else going on with your vehicle. 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 go to a dealer or independent shop that specializes security systems for vehicles and key fob programming.

Fobs can also malfunction due to malfunctioning transmitter receivers. These are usually built into the dashboard or next to the steering wheel, and transmit signals that allow you to unlock and start your car key repair company using the fob. It is possible that you will need to get closer to your car to enable it.

It could be required for a professional to access the case of the fob to replace the transmitter. A simple screwdriver will usually do the trick, but certain fobs require a specific tool or a special piece of equipment that can only be purchased at a dealer. It's best to have a certified mechanic handle this job to ensure you don't accidentally break the fob or cause injury to yourself.

Reprogramming the Key

A key fob that is not working might just need an upgrade in battery. Since these batteries are inexpensive and readily available in pharmacies and home improvement stores, this is the ideal first step before purchasing a new car key fob.

Alternately, you might be able to program the fob by following a few basic steps. The procedure varies for different vehicle brands, so it's essential to read the owner's manual as well as research the specifics of your particular model. For example one key fob could require the ignition to be switched on while reprogramming the key. One key fob could require the key to be inserted several times.

The process is straightforward. Make sure that the battery is securely in place. Close all doors, except the driver's door. This will ensure that the new key fob is communicating with the vehicle in a proper manner. Place the old key in the ignition, then turn it on however, do not start the engine. Next press the lock button on the fob, while looking at the transmission receiver, which is usually located in the front of the vehicle above the mirror. The key will inform 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 can be a tricky 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 new batteries. If the problem persists, a visit to your car dealer or a locksmith should be considered. A professional locksmith will have the tools and equipment required to reprogram the car fob or design a new one if necessary.

Genesky says he's able to program newer fobs at around $200 to $250, based on the model of vehicle. He's experienced European models rejected due to the fact that he lacks the expensive equipment needed. Most aftermarket fobs can be programmed, but you should always check with your local dealer to find out the price.

Finding a New Fob

If your key repairs fob is simply damaged beyond repair, you could need to purchase an entirely new one. Based on the make and model, an auto locksmith or dealership may be able help. The dealership is likely to be the most expensive choice for a replacement fob however, it will also have the tools and software required to program your car properly. For a more affordable option, a number of independent locksmiths can provide you with new car keys for a more affordable cost.

Before you rush to get a new key fob, it is recommended to consider resetting your current device. The owner's manual should explain the proper reset procedure that is typically pushing a few buttons which restores it to factory programming.

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

Getting a fob is easy enough, but finding the right place to have it done isn't easy. You may want to visit the dealer to get this service if you are driving a brand new car and you are looking to feel secure knowing that your key fobs are functioning correctly. However, if you're looking for an affordable alternative it is usually possible to find a locksmith who is independent who can provide the same service at a much lower cost.

A professional locksmith is a great option for those who aren't comfortable with this kind of work. They are certified and equipped to replace or reprogram the majority of car key fobs, and they can often accomplish the task in a short time. In addition, a locksmith is often able to come to your office or home to do the job which can be extremely convenient for some people. They can cut keys and program them on the spot if you've lost keys. This is great for those who don't want to leave their vehicle in the garage.