Car Key Fob Repairs
Key fobs of today are more than just a way to unlock and start vehicles. However, that added complexity can cause high repair bills when one of them fails.
It's important to know that most fobs are powered by flat-watch-style batteries which can be replaced at home. You may find that a simple reset is enough to make your fob work again.
Battery Replacement
The most frequent reason the key fob ceases to function is because of an inoperative battery. This is a simple fix, and it's worth a try before you go spending money on a new fob. Simply drive your car to a local auto parts store or a hardware retailer that stocks button cell batteries and purchase a replacement. You can also consult the owner's manual (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 come with two halves that snap together -you'll have to gently break the sides in order to access the battery. You'll typically need a small screwdriver or a different tool with a thin, flat blade. You can wedge your tool into a slot on the bottom of the key fob. You might also want to keep an eye out for tiny pieces that could break loose as you work.
Install the new battery in the same manner as you removed the old one. Make sure that the positive (+) side is facing up towards the buttons, and that the negative (-) side of the battery is aligned correctly with the marks inside the battery compartment of your fob.
Push a button to test the fob. If it isn't working, there may be a problem with your car that needs to be repaired or replaced by a professional.
Certain key fobs require specific tools to open, and the contacts inside can be fragile and susceptible to corroding. In these situations the best choice is to consult a car specialist or a dealer. When replacing a battery be gentle and follow your owner's instructions. You may be able to locate an identical battery in a big-box store or discounter, but make sure you read the owner's manual to ensure it's compatible with your vehicle.
Replace the internal key
Most key fobs contain a physical mechanical key that is hidden within the fob to prevent thieves. When the battery in the fob fails it will leave a blank key left behind, which can be used to open trunks and doors. In certain cases it is possible to start certain cars. Many people don't realize this however they could save themselves having to go to the dealership by simply replacing the fob battery. The flat watch-style battery is found in the majority of modern fobs. They can be found at hardware and auto parts stores. It is important to use the correct kind of battery. The wrong kind can damage the electronic circuitry, which can cause the battery to fail sooner.
If you replace the battery and find the issue persists it could be a sign something else is wrong with your vehicle. Check your owner's manual to determine if there's an option to reset the fob and restore the fob's the factory program. If this doesn't work, you'll need to visit a dealership or an independent shop that is specialized in vehicle security systems and fob programming.
Fobs can also malfunction because of faulty transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and transmit signals that allow you to open and start your car using the fob. If you notice that you're required to move closer and closer to your car to be able to make it work, there's a great chance that the transmitter isn't working.

A professional might have to open the case to replace the transmitter. A simple screwdriver is enough to do the job, but some fobs have complicated release mechanisms that require a special tool or specialized equipment that is available only at a dealer. This job should be done by a qualified mechanic to avoid damaging the fob and yourself.
Reprogramming the Key
A key fob that's not working might just need an upgrade in battery. These batteries are readily available in home improvement and pharmacy stores and are cheap. This is a great option to begin before purchasing the new key fob.
You can also re-program your key fob on your own If you follow some basic steps. This process can vary between vehicles, so you should consult your owner's guide and research your specific model. A key fob may require the ignition to be turned on while programming. Another might need the key to be inserted and removed repeatedly.
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 fob is communicating with the vehicle correctly. Insert the old key into the ignition and turn it on however, do not start the engine. Press the lock button while aiming the fob toward the receiver for transmission. It is usually 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 done by cycling the door locks or emitting an audible chime. g28carkeys can be a difficult process so it's essential to be aware of the timing and to not over-press the key button.
If the key fob won't work after reprogramming, try using new batteries. If the problem persists you may want to visit your local locksmith or dealer. A professional will have the tools and equipment necessary to re-program your car's fob, or create an entirely new key if needed.
Genesky says that he can program newer fobs ranging from $200 and $250, based on the vehicle. However, he's had to refuse customers with European models because he doesn't have the expensive equipment required. Fortunately, many aftermarket fobs can be programmable however it's recommended to consult the dealer of your choice first to see what the cost is.
How do I get a new fob
If your key fob cannot be repaired, you might require another one. Depending on the make and model, a dealership or an auto locksmith might be able to help. The dealership will likely be the most expensive alternative for replacing a fob however, they'll have the necessary tools and software to program your vehicle correctly. Many independent locksmiths offer a brand new car key fob for a much lower price.
It's a good idea to attempt to reset your current device before you make the decision to purchase another one. The owner's manual should explain the correct procedure for reset, which is usually just the pushing of a button that reset the factory settings.
You should also look over your owner's guide and warranty information to determine whether you can obtain an additional fob for your key. If your car's warranty still in effect or you have an auto club or car insurance policy that covers bumper-to-bumper you could be eligible to receive a reimbursement for the cost of replacing the fob.
Finding the right place to get a fob can be difficult. If you own a new vehicle and you want the peace of mind that comes with knowing that your key fobs are in good working condition, you might be better off going to the dealership for this service. If you are looking for a more affordable alternative, it is possible to find a locksmith who will offer the same service at less cost.
If you're not confident handling this type of work on your own, a professional locksmith can be a great option. They're trained and equipped to change or reprogram key fobs for cars of all kinds, and can do so quickly. Additionally, locksmiths can often come to your workplace or home to do the job which can be extremely practical for some. They can even cut and program keys on the spot in case you've lost keys, which is ideal for those who do not want to leave their cars unattended.