Car Key Fob Repairs
Key fobs today do much more than simply unlock and start vehicles. However, that added complexity can add up to costly repairs in the event that one of them malfunctions.

The good news is that most fobs have flat-watch-style batteries that are easy to replace at home. It is possible that a simple reset will bring your fob back to life.
Battery Replacement
A dead battery is the most common reason for a key fob that isn't working. This is a simple repair, and is worth a try before you spend money on a new key fob. You can buy the new button cell at your local auto part retailer or hardware store If you own one. You can also refer to the owner's manual (or in the case 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 in the specific type of fob you have.
The majority of fobs have two halves that snap together -You'll need to pull the sides apart in order to access the battery. You'll need a small, flat-bladed screwdriver, or a different tool with a blade that is thin. It might help to look for a notch on the lower edge of the fob that you can use to place your tool between. You may also want to look out for small pieces that might break loose while working.
Insert the new battery in the same way you removed the previous one. Make sure the positive (+) side is facing up toward the buttons and that the negative (-) side of the battery is aligned with the marks inside the battery compartment of your fob.
You can push a button to test the fob. If it doesn't work, you may have an issue with your car that requires a professional to repair or replace.
Some key fobs require special tools to open and close them, and the contacts inside may be delicate and susceptible to corroding. In these instances, a car specialist or the dealer will likely be your best option. When replacing a battery, be gentle and follow your owner's guide. You might be able to find the same battery at a big-box retailer or discounter, but be sure you check the owner's manual to ensure that it's compatible with your vehicle.
Replacing the Internal Key
Most key fobs contain an actual mechanical key however, it's hidden within the fob to stop thieves from getting. When the battery in the fob fails and the key is discarded, a blank one is left behind that can be used to unlock trunks and doors. In repair car key is possible to start certain cars. A majority of people don't realize that they can save a trip to a dealership by replacing the fob batteries. Most modern fobs have flat watches-style batteries that can be found at auto parts stores and hardware shops. Using the correct type of battery is crucial, however. The wrong type can damage the circuitry, causing the fob's failure much sooner.
If you try replacing the battery, and the problem persists, it could be an indication that something else is wrong with your car. Review the owner's manual of your vehicle to see if there's a reset procedure that can bring the fob back to factory-setup. If this isn't working, you'll need visit a dealership or independent shop that specializes security systems for vehicles and key fob programming.
Fobs could also fail due to malfunctioning transmitter receivers. They are typically placed on the dashboard or near the steering wheel, and they send signals that allow you to unlock and start your car using the fob. You may need to get closer to the car to enable it.
It might be required for a professional to open the case of the fob in order to replace the transmitter. A simple screwdriver is usually enough to suffice, but some fobs require a specialized tool or a special piece of equipment which can only be found at a dealership. This job should be performed by a certified mechanic in order to avoid damaging the fob and yourself.
Reprogramming the Key
A key fob that's 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 good method to start before you purchase a new key fob.
Alternately, you might be able to re-program the fob by following the steps. The process is different for different vehicles manufacturers, so it is important to read the owner's manual and study the specifics of your model. For instance the key fob might require that the ignition be turned on while reprogramming it. Another key might require the key to be inserted and removed several times.
The basic procedure is easy. First, make sure that the new battery is firmly in place. Then, get in the driver's seat and close all doors, excluding the driver's side door. This will ensure that the new key is communicating with the vehicle properly. Put the old key in the ignition and turn it on however, do not start the engine. Press the lock button while aiming the fob towards the transmission receiver. This is typically located on the front above the mirror. The key will signal to the vehicle within a brief amount of time that it is being programmed. This can be accomplished by turning the door locks or emitting an audible chime. This is a difficult process, so pay attention to the timing and don't press too hard the button.
If the key fob doesn't work after reprogramming it, try replacing the batteries. If the issue isn't resolved, a visit to your dealer for your car or a locksmith is a good idea. A professional will have the tools and equipment necessary to re-program your car's fob or clone an entirely new key if needed.
Genesky claims he is able to program newer fobs that range between $200 and $250, based on the vehicle. He's been denied European models rejected because they don't have the equipment needed. Luckily, the majority of aftermarket fobs can be programmed, but it's always best to check with an auto dealer first to find out what their price is.
How to get a new fob
If your key fob is simply damaged beyond repair, you could need to purchase an entirely new one. Depending on the make and model, a 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, it will also have the tools and software needed to program your car correctly. If you're looking for a cheaper solution, many independent locksmiths can provide you with new car keys at a lower cost.
It's a good idea to attempt to reset your current fob before you rush out to buy an entirely new one. The owner's manual should provide the correct method of reset. This is usually the result of a series of button presses that reset the factory program.
It is also recommended to check the owner's manual and warranty information to determine whether you are eligible for a replacement fob for your key. If your car's warranty in good standing or you have an auto club or car insurance policy that covers bumper to bumper you could be eligible for a reimbursement of the cost of replacing the fob.
Finding a fob is simple enough however, finding the right location to do it can be a challenge. You may want to go to the dealer for this service if have a newer car and are looking to feel secure knowing that your key fobs are functioning properly. However, if you're looking for a more affordable option it is possible to find a locksmith who is independent who can provide the same service for a lower cost.
A professional locksmith is a great option If you're not confident doing this kind of work. They are skilled and equipped to replace or reprogram all kinds of car key fobs and often they can complete the task quickly. A locksmith is also able to visit your house or office which is a great option for a lot of people. They can also cut and program keys on site if you've lost them. This is perfect for those who do not want to leave their vehicle unattended.