Its History Of Car Key Fob Repair

· 6 min read
Its History Of Car Key Fob Repair

Car Key Fob Repairs

Today's key fobs are more than just a way to unlock and start cars. But that extra complexity can result in costly repairs when one of them fails.

It's good to know that most fobs are powered by flat watch-style batteries which can be easily replaced at home. You may even find that a reset can bring it back to life.

Battery Replacement

A dead battery is the most common cause of a key fob not working. This is easy to repair, and is worth trying before you decide to spend money on a new fob. Take your car to an hardware or auto parts retailer that carries button cell batteries and pick up an alternative. You can also refer to your owner's manual (or in the event that 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 have two halves that snap together -- you'll need to gently pry the sides apart to access the battery. You'll need a small flat-bladed screwdriver or another tool with a blade that is thin. It might help to look for a groove along the lower edge of the fob that you can use to put your tool in between. You may also want to look out for tiny pieces that may come loose while working.

Insert the new battery the same way as you removed the previous one. Make sure that the positive (+) side is facing upwards toward the buttons and that the negative (-) side of the battery is aligned with the markings inside the battery compartment of your fob.

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

Certain key fobs require specific tools to open and close them, and the contacts inside may be delicate and easily corroded. In these instances an expert in the field or a dealer could be your best option. If you need to replace batteries, you should be gentle and follow the specific instructions in the owner's manual. You may be able to locate a battery similar in a big-box store or discounter, however, make sure to check the owner's manual to ensure it's compatible with your vehicle.

Replace the internal key

Most key fobs contain the physical key mechanical, but it's hidden inside the fob to stop thieves from getting. When the battery in the fob dies, it leaves behind a blank internal key which can open doors and trunks (and in some cases start certain vehicles). The majority of people don't realize that they can avoid a trip to the dealership by replacing the fob's batteries. The flat watch-style batteries are used in most modern fobs. These batteries are easily found in hardware and auto parts stores. The right kind of battery is essential however. The wrong kind can damage the electronic circuitry, which can cause the fob to fail sooner.

If you change the battery, and the issue persists, it could be a sign that something else is wrong with your vehicle. Go through the owner's manual to determine if you have a reset procedure that can bring the fob back to factory-setup. If this fails, you'll need 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 close to the steering wheel, and transmit signals that allow you to unlock and start your car using the fob. You may have to move closer to your car to enable it.

It could be required for a professional to access the case of the fob in order to replace the transmitter. A simple screwdriver can usually work, however certain fobs require a specific tool or special equipment that can only be purchased at a dealer. It is a good idea to have a qualified mechanic handle this job to ensure you don't accidentally break the fob or hurt yourself.

Reprogramming the Key

A key fob that is not working might just need a new battery. Because these batteries are cheap and readily available at pharmacies and home improvement stores, it's the ideal first step before purchasing a new car key fob.

You can also change the programming of your key fob on your own if you follow the steps below. This procedure can differ between vehicles, so you should read the owner's manual and research the model you have. For instance the key fob might require the ignition to be switched on while reprogramming the key. A key fob might require the key to be inserted multiple times.

The basic procedure is simple. First, ensure that the new battery is firmly in place. Then, get in the driver's seat and shut all doors, with the exception of the driver's side door. This will ensure that the new fob is communicating with the vehicle properly. Then, put the old key back in the ignition and switch it to the ON position, but do not 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. Within  car key repairs near me , the key will indicate to the vehicle that it's been programmed by turning off the doors' locks or generating the sound of a chime. This can be a difficult process, so it's important to be aware of the timing and not to over-press the key button.

If the key fob does not function after reprogramming, you can try using new batteries. If the problem persists you should visit your car dealer or a locksmith should be considered. A professional will have the tools and equipment to reprogram your car's fob or make an entirely new key if required.


Genesky claims he is able to program newer fobs ranging from $200 and $250, depending on the model of vehicle. However, he's had to refuse customers with European models due to the fact that there's no equipment required. A majority of the aftermarket fobs are programmed, but always inquire with your local dealer to find out the cost.

Getting a New Fob

If the key fob you have cannot be fixed, you could require an entirely new one. Depending on the brand and model, the dealership or an auto locksmith might be able to assist. The dealership is likely to be the most expensive option for a replacement fob However, they'll have all the required tools and software needed to program your vehicle correctly. If you are looking for a less expensive solution, a variety of locksmiths can provide you with an entirely new car key fob for a much more reasonable cost.

It is a good thing to try to reset your current device before you rush out to buy a new one. The owner's guide should explain the correct reset procedure. This is usually the result of a series of button presses which restores the factory settings.

It's recommended to check your owner's manual as well as warranty information prior to deciding where to go for an replacement fob for your key. If your car's warranty is still in effect 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.

The process of getting a fob can be simple enough however finding the best place to have it done can be tricky. It is possible to visit the dealer for this service if have a newer car and you are looking to feel secure knowing that your key fobs are functioning properly. However, if you're looking for an option that is more affordable it is possible to find an independent locksmith who can provide the same services for a lower cost.

A locksmith who is professional is a great choice for those who aren't comfortable with this type of work. They are skilled and equipped to reprogram or replace all kinds of car key fobs, and they can often do it quickly. In addition, a locksmith will often visit your office or home to do the job, which can be very practical for some. They can even cut and program keys on-site if you have lost keys, which is ideal for those who prefer not to leave their cars unattended.