Key fobs today do a lot more than unlock and start vehicles. However, that added complexity can add up to high repair bills if one of them breaks.
The positive side is that many fobs are equipped with flat-watch-style batteries that are easy to replace at home. It is possible that a simple reset can make your fob work 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 invest in the replacement fob. Simply drive your car to a local auto parts store or hardware retailer that stocks button cell batteries and pick up a replacement. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) for specific instructions on how to open and replace the battery in your fob.
Most fobs have two halves that snap togetherYou'll need to break the sides in order to access the battery. You'll usually need a small screwdriver or some other 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. You might also want to watch for tiny pieces that might break loose while you work.
Install the new battery in 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 may have a problem with your car that requires a specialist to fix or replace.
Certain key fobs require specific tools to open and close them, and the contacts inside can be fragile and susceptible to corroding. In these instances, the best option is to talk to a specialist or a dealer. When replacing a battery, be gentle and follow your owner's manual. You might be able find a similar battery at a discounter or big-box retailer but you'll have to consult your owner's manual to ensure that it's compatible with your vehicle.
Replace the internal key
Most key fobs include a physical mechanical key that is hidden within the fob to stop thieves from getting. If the battery of the fob fails it will leave an internal key blank that is able to unlock trunks and doors (and in some cases, even start certain vehicles). Most people aren't aware of this however, they can save from a trip to the dealer by simply replacing the fob battery. The majority of modern fobs utilize flat watches-style batteries that are readily available at auto parts stores and hardware shops. It is essential to choose the right type of battery. The wrong kind can damage the electronic circuitry, causing the battery to fail sooner.
If you replace the battery and find the issue persists, it could be a sign that something else is wrong in your vehicle. Check your owner's manual to see if there's a reset procedure that can bring the fob back to factory programming. If that doesn't help, you'll need to visit a dealer or an independent shop that is specialized in vehicle security systems and fob programming.
Fobs may also fail because of faulty transmitter receivers. They are usually found near the steering wheel or on the dashboard. They transmit signals that allow you to unlock your car and begin it using the fob. If you notice that you're being required to get closer and closer to your vehicle in order to make it work, there's a great chance the transmitter is failing.
A professional might need to open the case to replace the transmitter. A simple screwdriver is enough to accomplish the task however some fobs come with complicated release mechanisms that require a special tool or specialized equipment that is available only at a dealership. It is a good idea to have a certified mechanic perform this task so you don't damage the fob or injure yourself.
Reprogramming the Key
A key fob that is not working might just need a new battery. These batteries are readily available in both pharmacy and home improvement stores and are inexpensive. This is a great way to start before buying a new key fob.
You can also change the programming of your key fob by yourself by following some basic steps. This procedure can differ between automobiles, so consult your owner's guide and research the model you have. One key fob might require the ignition to be on when reprogramming. Another may require the key to be inserted and removed multiple 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 is communicating with the vehicle in a correct manner. Then, place the old key back into the ignition and turn it on to the ON position, but do not start the engine. Next, press the lock button on the fob, while making sure to point it towards the transmission receiver, which is usually situated on the front of the car above the mirror. The key will notify the vehicle within a short period of time that it is being programmed. This can be done by turning off the door locks or emitting an audible chime. This procedure can be difficult, so it's important to be aware of the timing and to not over-press the key button.
If the key fob won't work after reprogramming it, try using new batteries. If the problem persists you may want to visit your local locksmith or dealer. A professional locksmith will have the tools and equipment to reprogram your car's fob or make a new key if it's required.
Genesky says he can usually program newer fobs for $200 to $250, based on the vehicle. But he's had to refuse customers with European models because they don't have the costly equipment required. Luckily, the majority of aftermarket fobs can be programmed, but it's always recommended to consult an auto dealer first to find out the price.
How to get a new fob
If your key fob is simply damaged beyond repair, you could need to purchase an entirely new one. Based on the make and model, the dealer or an auto locksmith might be able to assist. The dealership is likely to be the most expensive choice to replace your fob, but it will also have the tools and software necessary to program your car properly. If you're looking for a cheaper solution, a variety of locksmiths can offer you new car keys for a more affordable price.
Before you rush to get a new fob it's an excellent idea to try resetting your current device. The owner's manual should provide the correct reset procedure. It is typically a series button presses that reset the factory program.
It's recommended to read the owner's manual and warranty information prior to deciding the best place to get an replacement fob for your key. If your vehicle is under warranty or you have a car insurance policy or auto club membership with bumper-to-bumper coverage, you may be eligible to receive a reimbursement for the cost of an entirely new fob.
Finding car keys repair to get a fob can be a challenge. It is possible to go to the dealer to get this service if you have a newer car and you want to be confident that your keyfobs are working properly. However, if you want an option that is more affordable it is possible to find a locksmith independent who can provide the same services for a lower cost.
A locksmith who is professional is a great option If you're not confident doing this type of work. They are equipped and trained to replace or reprogram key fobs for cars of all kinds and do it quickly. A locksmith can also visit your house or office, which is convenient for a lot of people. They can cut and program keys on the spot if you've lost them. This is great for those who don't want to leave their car unattended.
