Car Key Fob Repairs
Key fobs of today are more than just a way to unlock and start vehicles. This added complexity could cause costly repair costs when it fails.
The positive side is that many fobs are equipped with flat-watch-style batteries that are simple to replace at home. And you may find that a reset can make your device work again.
Battery Replacement
The most common reason the key fob ceases to function is due to the battery being dead. This is a simple fix, and it's worth a try before you spend money on a new fob. You can pick up the new button cell at your local auto parts store or hardware retailer if you have one. You can also consult the owner's manual (or in the case that you don't have one, YouTube is full of videos from people who show you how to do it) for specific instructions for opening and replacing the battery in your particular type of fob.
You'll need to gently pull off the sides of many fobs to access the battery. You'll need a small flat-bladed screwdriver, or a different tool with a small blade. It might help to look for a notch on the bottom of the fob that you can wedge your tool between. You may also want to watch out for tiny pieces that might break loose while you work.
Once you have your new battery, place it in the same way that you removed the previous one. The positive (+) side should face the buttons and the negative (-) the marks on the compartment for the battery.

Check the fob to determine if it works by pushing the button. If it fails, it might be a problem with your vehicle that requires to be fixed or replaced by a specialist.
Some key fobs are difficult to open and the contacts could be fragile and easily corroded. In these cases the best solution is to talk to a expert or a dealer. If you're looking to replace a battery, try to be very gentle and follow the specific instructions in the owner's manual. You might be able to locate a comparable battery at a discounter or a big-box retailer but you'll have to refer to your owner's manual to make sure that it's the right one for your vehicle.
Replacing the Internal Key
To prevent theft, most key fobs come with a mechanical key hidden inside. When the battery in the fob fails it will leave a blank key left behind, which can be used to open doors and trunks. In some cases the key could even start certain vehicles. A majority of people don't realize they can avoid a trip to a dealership by replacing the fob's batteries. The majority of modern fobs utilize flat watch-style batteries that are readily available at hardware stores and auto parts shops. It is crucial to choose the correct type of battery. A wrong battery can harm the circuitry and cause the fob's failure earlier.
If the problem continues to persist after you replace the battery, it may be an indication that there is something else wrong in your vehicle. If you have an owner's guide, check to see if there is a reset option available to restore the fob's original programming. If this fails, you'll need to visit a dealership or an independent shop that specializes in vehicle-security systems and key fob programming.
Fobs can also malfunction due to malfunctioning transmitter receivers. These are usually located close to the steering wheel, or on the dashboard. They transmit signals to allow you to unlock your vehicle and start it using the fob. You may have to move closer to the car in order to enable it.
car keying repair might need to open the fob's case to replace the transmitter. A simple screwdriver will usually accomplish the task however some fobs come with complex release mechanisms that require a specialized tool or specialized equipment that is available only through a dealer. This is a job that should be done by a qualified mechanic to avoid damaging the fob and yourself.
Reprogramming the Key
A key fob that's not working may simply need an upgrade in battery. Since these batteries are inexpensive and easily available at pharmacies and home improvement stores, this is a good first step before buying an entirely new car key fob.
Alternatively, you may be able to re-program the fob on your own by following some basic steps. This process varies between vehicle manufacturers, so it is important to refer to the owner's manual and research the specifics of the model you own. For instance one key fob could require the ignition to be switched on while reprogramming the key. A key fob might require the key to be inserted several times.
The general procedure is very easy. First, make sure the new battery is securely in place. Close all doors, with the exception of the driver's door. This will ensure the new fob is communicating with the vehicle properly. Insert the old key into the ignition and turn it ON but don't start the engine. Press the lock button while aiming the fob toward the receiver of the transmission. This is usually located on the front, 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 can be a difficult process and it's crucial to be aware of the timing and not to over-press the key button.
If the key fob isn't working, try reprogramming it again with new batteries. If the problem persists then a visit to the dealer of your vehicle or a locksmith should be considered. A professional will have the tools and programming equipment needed to reprogram your car's fob or make an entirely new key if required.
Genesky says he's able to program newer fobs between $200 and $250, based on the vehicle. Genesky has had European models turned away because he lacks the expensive equipment needed. Luckily, the majority of aftermarket fobs can be programmable however it's best to check with the dealer of your choice first to see the price.
How do I get a new fob
If your key fob is damaged beyond repair, you could need to purchase an alternative. Depending on the brand and model, the dealership or an auto locksmith may be able to assist. The dealership is likely to be the most expensive option for a replacement fob however, they'll have all of the necessary tools and software to program your car correctly. If you're looking for a cheaper option, a number of independent locksmiths will be able to provide you with an entirely new car key fob at a lower cost.
It's a good idea to attempt to reset the fob you have before you make the decision to purchase an entirely new one. The owner's manual should explain the correct procedure for reset which is typically the pushing of a button that reset the original programming.
It's recommended to review your owner's manual as well as warranty information before you decide the best place to get an replacement fob for your key. If your car is under warranty or you have a car insurance policy or auto club membership with bumper-to-bumper protection, you may be able to receive some reimbursement for the cost of an entirely new fob.
Finding the best location to purchase a fob can be difficult. If you own a new car and would like the assurance with knowing that your keys fobs are in good working condition, you might be better off going to the dealership to get this service. However, if you're looking for a more affordable option it is usually possible to find an independent locksmith who can offer the same services for a lower cost.
If you aren't comfortable handling this type of work on your own, a professional locksmith may be a great choice. They are trained and equipped to replace or reprogram the majority of car key fobs and they can often complete the task quickly. Additionally, locksmiths is often able to come to your workplace or home to complete the task which is practical for some. key car repair can even cut and program keys on-site when you've lost keys, which is great for those who don't like to leave their cars in the dark.