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Car Key Fob Repairs Key fobs today do much more than simply unlock and start vehicles. This added complexity can lead to expensive repair bills when it fails. It's important to know that a majority of fobs are powered by flat watch-style batteries that 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 why that a key fob doesn't work is due to the battery being dead. This is a simple repair, and is worth trying before you decide to spend money on a new fob. Take your car to a local auto parts store or hardware retailer that stocks button cell batteries and purchase a replacement. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) to find specific instructions on how to replace and open the battery in your fob. Most fobs have two halves that snap together — you'll need to gently break the sides to get to the battery. You'll require a small flat-bladed screwdriver or another tool with a thin blade. It might help to look for a notch along the lower edge of the fob that you can put your tool in between. It is also advisable to keep an eye out for small pieces that could fall off while working. Insert the new battery the same way as you removed the old one. The positive (+) side should be facing the buttons and the reverse (–) the markings on the compartment for the battery. Push a button to test the fob. If it fails, it might be a problem with your car that needs to be fixed or replaced by a specialist. Some key fobs require special tools to open, and the contacts inside could be fragile and susceptible to corroding. In these instances, the best option is to speak with a specialist or a dealer. When replacing a battery be gentle and follow your owner's instructions. You might be able to find a battery similar in a big-box store or discounter, but make sure to check the owner's manual to ensure it's compatible with your vehicle. Replace the internal key To protect against theft, the majority of key fobs are equipped with a mechanical key hidden inside. If the battery of the fob fails it will leave an internal key that is blank that can unlock trunks and doors (and in some cases, even start certain cars). Many people don't realize this, but they can avoid a trip to the dealership by simply replacing the fob battery. Most modern fobs have flat-watch-style batteries which are readily available at hardware stores and auto parts shops. The right kind of battery is essential however. The wrong type can damage the circuitry and cause the fob to fail much earlier. If you replace the battery and find the issue is still there, it could be a sign that something else is happening with your vehicle. Review the owner's manual of your vehicle to determine if there's a reset procedure that will restore the fob's the factory program. If this doesn't help you'll have to go to a dealership or an independent shop that specializes in vehicle security systems and fob programming. Fobs could also fail due to faulty transmitter receivers. They are usually found close to the steering wheel or on the dashboard. They transmit signals to allow you to unlock your car and start it with the fob. If you're required to move closer and closer to your vehicle in order to make it work, there's a great chance the transmitter is failing. A professional may need to open the case of the fob to replace the transmitter. A simple screwdriver is enough to get the job done however some fobs come with complicated release mechanisms that require a specialized tool or specialized equipment that is available only through a dealer. It is a good idea to have a certified mechanic do this job so that you don't damage the fob or injure yourself. Reprogramming the Key A key fob that is not working could just require an upgrade in battery. key car repair are easily available in pharmacy and home improvement stores and are cheap. This is a great method to start before you purchase the new key fob. You can also re-program your key fob on your own if you follow some basic steps. This process varies between vehicle brands, so it's essential to consult your owner's manual and research the specifics of your model. One key fob could require that the ignition switch be on when programming. Another key might require the key to be removed and inserted several times. The general procedure is very easy. Make sure the battery is securely in place. Close all doors, with the exception of the driver's door. This will ensure the new key is communicating with the vehicle in a correct manner. Insert the old key into the ignition, then turn it on, but do not start the engine. Press the lock button while aiming the fob at the transmission receiver. It is usually located on the front, above the mirror. In a short period of time the key will announce to the vehicle that it's being programmed by cycling the doors' locks or emitting a chime. This is a challenging procedure, so pay attention to timing and don't over-press the button. If the key fob does not work after reprogramming it, try using new batteries. If the issue is still there, you may want to visit your local locksmith or dealer. A professional will have the tools and programming equipment necessary to re-program your car's fob, or create the key if needed. Genesky says he can usually program newer fobs at around $200-$250, depending on the car. He's had European models rejected due to the fact that there isn't the equipment required. The majority of aftermarket fobs can be programmed, but always consult your local car dealer to find out the cost. Finding a New Fob If your key fob is simply beyond repair, you might require a new one. Depending on the make and model, an auto locksmith or dealership may be able help. The dealership is likely to be the most expensive choice to replace your fob, but it also has the tools and software necessary to program your car correctly. Many locksmiths in independent shops provide a new car key fob for an affordable price. It is a good thing to attempt to reset the fob you have before you rush out to buy a new one. The owner's manual should explain the proper procedure for reset that is typically pushing a few buttons which restores the original programming. You should also check your owner's guide and warranty information to see if you can get an additional key fob. 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 able to receive some reimbursement for the cost of the new fob. Finding a fob is simple enough however, finding the right location to do it can be tricky. You may want to go to the dealer to get this service if you have a newer vehicle and want peace of mind knowing that your key fobs are functioning correctly. If you're seeking a less expensive alternative, it is possible to find a locksmith that can provide the same service at a lower price. A locksmith who is professional is a great choice If you're not confident doing this kind of work. They are equipped and trained to repair or replace keys for cars of all types and can do it quickly. In addition, a locksmith is often able to come to your home or office to complete the task which can be extremely convenient for some people. They can cut keys and program them on the spot in case you've lost them. This is perfect for those who do not want to leave their car without a key.