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Car Key Fob Repairs Key fobs of today can do more than unlock and start cars. However, the added complexity could cause expensive repair costs when one of them fails. The good news is that the majority of fobs use flat watch-style batteries that are easy to replace at home. You might find that a simple reset is enough to allow your fob to function again. Battery Replacement The most frequent reason a key fob stops working is due to a dead battery. It's a simple fix and worth trying before you purchase the replacement fob. You can purchase a new button cell battery at your local auto part store or hardware retailer If you own one. You can also consult the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to replace and open the battery inside your fob. The majority of fobs have two halves that snap together- you'll need to gently break the sides to get to the battery. You'll need a small flat-bladed screwdriver, or another tool with a blade that is thin. It may be helpful to look for a notch on the bottom of the fob which you can use to place your tool between. You might also want to look for small pieces that could fall off while working. When you have your new battery, you can insert it the same way that you removed the old one. Make sure the positive (+) side is facing up towards the buttons and that the negative (–) side of the battery is aligned with the markings inside the battery compartment of your fob. Push a button to test the fob. If it fails, it could be a problem in your car that needs to be fixed or replaced by a specialist. Certain key fobs require specific tools to open and close them, and the contacts inside can be fragile and susceptible to corroding. In these situations the best solution is to talk to a specialist or a dealer. When replacing a battery, be patient and follow your owner's guide. You may be able find the same battery at a big-box store or discounter, but make sure you check the owner's manual to ensure that it's compatible with your vehicle. Replacing the Internal Key To protect against theft, the majority of key fobs have a mechanical key hidden inside. If the battery inside the fob fails, a blank key is left behind, which can be used to unlock trunks and doors. In some instances, this key can even start certain cars. A majority of people don't realize they can avoid a trip to a dealership by recharging the fob batteries. Most modern fobs use flat-watch-style batteries which are readily available at hardware stores and auto parts shops. Choosing the right type of battery is important however. The wrong type can damage the circuitry and cause the fob's failure much sooner. If the issue persists after replacing the battery, it could be a sign that something else is wrong with your vehicle. If you have an owner's guide, check to see if a reset procedure is available to restore the fob's original programming. If this isn't working, you'll need go to a dealer or a shop independent that specializes in vehicle-security systems and key fob programming. Fobs may also fail because of faulty transmitter receivers. They are typically located on the dashboard or next to the steering wheel, and they send signals that allow you to open and start your car with the fob. It is possible that you will need to get closer to your car to make it work. A professional might need to open the case of the fob to replace the transmitter. A simple screwdriver will usually suffice, but certain fobs require a specific tool or equipment that can only be purchased at a dealer. It's best 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 functioning simply requires a new battery. Since these batteries are inexpensive and readily available at pharmacies and home improvement stores, this is a good first step before purchasing a new car key fob. Alternately, you might be able to re-program the fob by following the steps. www.g28carkeys.co.uk varies for different vehicle makes, so it's important to refer to the owner's manual and study the specifics of your particular model. For example one key fob could require the ignition to be switched on while reprogramming the key. One key fob could require the key to be inserted several times. The procedure is easy. First, make sure the new battery is securely in place. Then, sit in the driver's seat and close all doors, with the exception of the driver's side door. This will ensure that the new key fob communicates with the vehicle properly. Then, put the old key back into the ignition and switch it to the ON position, but don't start the engine. Next press the lock button on the fob, while looking at the transmission receiver, which is usually located in the front of the car above the mirror. Within a short time frame the key will signal to the vehicle that it's programmed by triggering the doors' locks or generating the sound of a chime. This process can be tricky, so it's important to be attentive to the timing and not to over-press the key button. If the key fob does not work try reprogramming it with new batteries. If the problem persists you might want to check with your car dealer or locksmith. A professional locksmith will have the tools and equipment to reprogram the car fob or create a new one, if required. Genesky says he's able to program newer fobs for $200 to $250, based on the model of vehicle. He's been denied European models turned away because he lacks the expensive equipment required. Luckily, the majority of aftermarket fobs are programmable, but it's always best to talk to a car dealer first to determine the price. How do I get a new fob If your key fob is simply beyond repair, you might need to purchase a new one. Based on the make and model, a dealership or an auto locksmith might be able to help. The dealership will likely be the most expensive option for a fob replacement However, they'll have all of the necessary tools and software to program your car correctly. Numerous locksmiths who are independent offer a new car key fob at an affordable price. It's a good idea to try to reset the fob you have before you make the decision to purchase a new one. The owner's manual should explain the proper reset procedure, which is usually just a series of button pushes which restores the factory settings. You should also check the owner's guide and warranty information to see whether you can obtain an alternative fob for your key. If your vehicle's warranty is still in effect or you have an auto club or insurance policy that covers bumper to bumper you could qualify for a reimbursement on the cost of a replacement fob. Finding the right location to purchase a fob can be a challenge. It is possible to visit the dealer for this service if are driving a brand new car and are looking to feel secure knowing that your key fobs are functioning properly. However, if you're looking for an affordable alternative it is usually possible to find a locksmith independent who can provide the same services for a lower cost. If you're not confident handling this type of work on your own, a professional locksmith can be a good option. They're trained and equipped to repair or replace keys for cars of all types and do it quickly. Locksmiths is also able to visit your house or office which is a great option for many people. They can also cut and program keys on the spot if you've lost keys. This is perfect for those who don't want to leave their car unattended.