Car Key Fob Repairs
Key fobs today do a lot more than unlock and start vehicles. However, the added complexity could cause high repair bills when one of them fails.
It's important to know that most fobs are powered by flat watch-style batteries, that can be replaced at home. You might find that a simple reset will bring your fob back to life.
Battery Replacement
A dead battery is the most common reason for the fob's key not working. It's easy to fix and worth trying before you purchase the replacement fob. Take your car to an auto parts store or hardware retailer that stocks button cells and choose an alternative. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) to find specific instructions on how to replace and open the battery inside your fob.
Most fobs come with two halves that snap together -- you'll need to gently pull the sides apart to access the battery. You'll usually need a small screwdriver or another tool equipped with a thin, flat blade. You can wedge your tool into a notch on the bottom of the key fob. You may also want to keep an eye for tiny pieces that could break loose as you work.
Insert the new battery the same way as you removed the old one. The positive (+) side should be facing the buttons, while the opposite side is facing (-), the markings on the compartment for the battery.
Push a button to test the fob. If it fails, it could be a problem in your vehicle that needs to be repaired or replaced by a professional.
Certain key fobs are difficult to open and their contacts may be brittle and easily corrosion-prone. In these instances an expert in the field or the dealer will likely be the best option. If you're in need of replacing a battery, try to be gentle and follow the instructions that are specific to your owner's manual. You might be able to locate a comparable battery at a discounter or a big-box retailer however, you'll need to check the owner's manual to ensure that it's the right one for your vehicle.
Replacing the Internal Key
Most key fobs include an actual mechanical key that is hidden within the fob to stop thieves from getting. If the battery inside the fob fails, a blank key is left behind, which can be used to unlock trunks and doors. In certain cases, this key can even start certain cars. A majority of people don't realize they can avoid a trip to the dealership by replacing the fob batteries. The flat watch-style battery is used in most modern fobs. These batteries are easily located at hardware stores and auto parts stores. Using the correct type of battery is essential, however. A wrong battery can harm the circuitry and lead to the fob to fail much earlier.
If you try replacing the battery and find the issue is still there, it could be an indication that something else is happening with your vehicle. If you have an owner's guide look for there is a reset option available to restore the fob's original programming. If this doesn't work, you'll need to visit a dealer or an independent shop that specializes in vehicle security systems and fob programming.
Fobs could also fail because of faulty transmitter receivers. They are typically placed on the dashboard or near the steering wheel, and transmit signals that allow you to open and start your car with the fob. You may have to move closer to the 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 nearby key repair shop is enough to get the job done, but some fobs have complicated release mechanisms that require a specific tool or equipment that is available only at a dealership. This job should be done by a qualified mechanic to avoid damaging the fob as well as yourself.
Reprogramming the Key
Most of the time, a key fob that isn't working simply requires a new battery. These batteries are readily available in both pharmacy and home improvement stores and are inexpensive. This is a great method to start before you purchase the new key fob.
You can also change the programming of your key fob on your own if you follow a few basic steps. This procedure can differ between vehicles, so you should refer to the owner's manual and research your specific model. For instance the key fob might require that the ignition be turned on while reprogramming it. 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, with the exception of the driver's door. This will ensure that the new key fob can communicate with the vehicle properly. Insert the old key into the ignition and turn it ON, but do not start the engine. Next press the lock button on the fob, while looking at the transmission receiver, which is usually situated on 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 off the door locks, or emitting an audible chime. This is a difficult process, so pay attention to timing and don't over-press the button.
If the key fob still isn't working Try reprogramming it using new batteries. If the issue persists, a visit to your dealer for your car or locksmiths should be considered. A professional will have all 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-$250, depending on the model of vehicle. He's experienced 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 the dealer of your choice first to find out what the cost is.
How to get a new fob
If your key fob is simply beyond repair, you might need to purchase an alternative. Depending on the make and model, the dealership or an auto locksmith might be able to help. The dealership is likely to be the most expensive option for a replacement fob however, they'll have all the required tools and software to program your car correctly. Many locksmiths in independent shops offer a brand new car key fob for an affordable price.
It is a good thing to try to reset your current device before you make the decision to purchase another one. The owner's guide should explain the correct method of reset. This is usually a series button presses that restores the factory programming.
You should also check your owner's guide and warranty information to determine whether you are eligible for a replacement fob for your key. If your vehicle's warranty is in good standing or you have an auto club or car insurance policy that covers bumper to bumper you could qualify to receive a reimbursement for the cost of a replacement fob.
Finding a fob is simple enough, but finding the right place to have it done can be a challenge. If you own a new vehicle and you want the peace of mind that comes from knowing that your key fobs are in good condition, you might prefer going to the dealership for this service. If you are looking for a cheaper alternative, it is possible to find a locksmith who can provide the same service at an affordable cost.
A locksmith who is professional is a good option for those who aren't comfortable with this kind of work. They are trained and equipped to replace or reprogram keys for cars of all kinds, and can do so quickly. In addition, a locksmith will often visit your office or home to complete the task which is convenient for some people. They can even cut and program keys on the spot in case you've lost keys, which is ideal for those who prefer not to leave their vehicles unattended.