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How to Repair a Key Fob If you are unable to unlock your key fob to start your car, it may be time to take it to an automotive service. However, before you do that there are some things to examine first. The most obvious reason that your key fob isn't functioning is due to a dead battery. Luckily, most key fobs are powered by normal 3V button cell batteries that are easily available at all stores. Dead Battery The battery on your key fob is responsible for charging the remote functions that let you unlock your vehicle and open the tailgate or trunk and even start your engine. The car key fob's battery will eventually die, just like any other battery. If this happens, it will ruin your day and throw off your schedule. Fortunately, you don't need to wait for your key fob to go out of service before you can replace the battery. It's simple enough to do at home, so you don't have to pay an expert mechanic to replace your keyfob batteries. The first thing you need to do is look at the fob's key for a slot or notch along the seam which separates the top and bottom of the fob. Use a flathead screwdriver or coins to gently push the two halves of the fob apart. Once the fob is opened take out the old battery. Replace it with a brand new one. After you've inserted the new battery then snap the fob halves together and test it. If the key fob cannot unlock your car or start it, try holding the fob closer to the ignition switch. The radio transmitter on the key fob can transmit a signal to the car's onboard receiver from a short distance, but it only works in the event that a battery-powered remote is within close proximity to the ignition. It may not seem likely that your key fob would require a new battery, but it is better to be prepared rather than having it occur at the worst possible moment. By learning how to replace the car key fob battery, you can regain the remote functions that make your Chevy so enjoyable to drive around in Normal and Decatur. Contact our service specialists at Leman's Chevrolet City Llc if you would like to know more about keyfob repairs. We'll teach you how to keep your key fob in great condition. Circuit Board Damage A damaged circuit board can impact the performance and integrity of the device. It could also cause issues with the functioning of other parts and components within the device. Fortunately, there are several repair methods that can fix the damaged circuit board. With these methods you can restore the functionality of your device and make it appear like new. Examine the device to determine the cause of the damage. This is especially crucial if you are trying to solve a difficult circuit board. It is important to note any burn marks on the circuit board or any other physical damage. You should also test the voltage at different points on the board. Depending on the complexity, you can use a multimeter or oscilloscope to check the voltage. Circuit boards that are damaged are often caused by defective components. It could be something as simple as a bad diode or transistor. In other instances the issue could be caused by an unrepaired trace pathway. Traces are constructed of copper or silver and are susceptible to being damaged due to physical damage and power surges, or contamination by metallic dust and normal wear and tear. You should make sure that you have the proper tools and materials before attempting to repair a board. This will ensure that the repair is as smooth as it can be. You should have soldering equipment, sandpaper and a desoldering device at your side. You should also protect yourself against electrostatic discharges, which can damage circuit boards. how to repair car key lock can wear an antistatic wristband or make sure your workstation is grounded to prevent ESD. It is also important to clean the board before beginning the repair. This will stop further damage and reduce errors. Clean the board with an swab that has been soaked in isopropyl (IPA) alcohol or a flux removal pen. Also, make sure that the soldering pads are free of contaminants. Remove the tape in excess from the areas to be repaired. This will stop further damage to the tracks or pads. You can also employ a craft knife to carefully cut the extra tape. It is essential not to cut any tracks or pads of the circuit board when trimming. Copies A key fob, or small electronic device, gives access to and control of a vehicle's features without the use of a physical key. These devices receive a lot of abuse and are not impervious to destruction. They also contain a myriad of parts that may break or malfunction. Luckily, most of these components are repairable. Contacts to the battery terminal and buttons are the most frequently encountered failure point, but there are other things that could go wrong. The car key fobs communicate with the vehicle by radio frequency. They are equipped with unique tags that match the car. When they are activated, they relay the data from the tag to the vehicle, so it can open or unlock the door or turn on the motor. A car key fob is more convenient than traditional keys that require being in ignition to activate the features. Sometimes, it can be a bit confusing when a car key fob begins acting up. Luckily, most problems with the key fob aren't major and can usually be repaired at home. Your car key fob could only need to be cleaned or the batteries changed. However, it is important to note that if you've tried all of these tricks and your key fob still doesn't work, it might be time to replace it. Getting a new one can be more convenient than trying to figure out what is wrong with the current key fob and it's a lot more secure than not having the ability to operate your vehicle. Depending on the model and make of your vehicle, you may buy a replacement fob through the dealer or an independent auto locksmith. The dealer can also reprogram the new key fob to match your vehicle. You can download apps from some automobile manufacturers onto your smartphone to unlock doors and start the car if you lose or break your key fob. This is a great option for those with a spare key fob and who wish to secure their vehicle while they repair the broken one.