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How to Fix a Key Fob That isn't Working If your key fob won't work and you're not sure why, you can fix it by following just a few steps. The first step is to make sure that it's not the backup remote. If your backup remote can lock and unlock the doors of your car, it is likely that the main remote isn't working. The majority of car remote key malfunctions result from circuitry or battery problems. Battery The battery in the key fob could wear out over time. It is relatively easy to replace batteries, but it is important to ensure you choose the correct type that you can refer to your owner's manual or contact the dealer of the manufacturer to determine the type of battery you need. It's also a good idea to examine the battery compartment carefully because dead batteries can release caustic chemicals that could damage the remote. If changing the batteries does not solve the problem it could be because there are other issues that require professional attention. If buttons are stuck or broken for instance, it may be necessary remove the remote and rebuild each component. broken car key repair near me can also try reprogramming the vehicle to recognize the new remote. Buttons Through frequent use, key fobs may get dirty and worn. This is not uncommon however it can cause buttons to cease functioning or require a hard press for them to function. This can be very frustrating especially when you're away from home and have to turn on your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you have in the home. First, check that the batteries are properly installed and that the indentation on the back of the button has been filled. Then, carefully remove the remote and examine the circuit board. Look for signs of corrosion or other indications that the buttons are worn out or damaged, such as missing paint that is conductive. Use a Q-tip dipped into alcohol to gently clean any membrane contact that has worn-out or where conductive painting is missing. Be careful not to rub too hard, since this could cause damage to the conductive painting and prevent the button from firing when it is pressed. Check the battery connector terminals carefully for any loose solder connections. If this is the case, simply connecting them back can restore function to the button. The same procedure can be used to restore functionality to any other loose connections inside the fob. If, for instance, any of the rubber buttons on the front of the key fob aren't working or require a difficult press to function, it is likely that the graphite disks that are on the back of the button are deteriorating and require replacement. mobile car key repair can do this by rubbing a pen across the disks. This will bring the button back to life. If all of this doesn't help or if the button still does not respond to a hard push It could be because the circuit board has become damaged. It is possible to fix this by a quick clean and refitting, but it's best to have an extra fob on hand in the event that this method doesn't work for you. Circuitry If the key fob buttons are working, the circuit board inside your remote may be dirty. This problem can be resolved by a thorough inspection. The most common causes of dirty circuit boards are water and broken cases. A broken case allows water and other debris to enter and short out the electronics. Water can also get through pins and vias, which are tiny connectors found on the board. If you're handy enough to open your key fob and aren't afraid of some mess, we can take off the buttons and solder new ones in their place. Also, you should check the connections between battery terminals. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals and buttons back in place is usually all that's required to return keys that are not in working order. Non-Remote Transponder Chips Sealed non-remote transponder chip are more durable than remote fobs that contain them however they are still susceptible to being damaged by a hole that is drilled into them or run over by a lawnmowers blade or door handle for a car. Most of the time, non-remote transponder chips fail, and this could be attributed to an exploded fuse. If you're able to open the sealed key fob and are able to bear the mess, you can easily remove the circuit board and test the fuse with a multimeter for proper diode function. If you don't feel comfortable with this, you can go to your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob transmits an RF signal. Programming Key fobs aren't indestructible and are susceptible to being damaged by a variety of factors. They can break their connection with the receiver in your vehicle due to shocks or low-battery, which requires changing the program. A professional auto locksmith or dealer will be able to reprogram your key fob and get it working again. In the event that resetting or repairing your key fob isn't working, it could be time to replace it completely.