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Car Remote Key Repair Modern car remotes are useful and convenient however, they can be a pain if they stop functioning. There are some quick solutions to get them working again. Replace the battery first. The majority of fobs are powered by lithium coin cells. They are inexpensive and easy to locate. Broken Electronics The electronic circuit board inside your car key remote transmits and interprets signals for your vehicle. The key fob will cease to function if this board is damaged. Contrary to battery failure, which is typically quite easy for most drivers to fix at home, damage to the transmitter or receiver of the remote key will require a professional auto locksmith or dealer for your car. The majority of remote key fobs utilize lithium ion coin batteries which have a decent lifespan, but they won't last forever. The change of the batteries is likely to solve the issue, particularly those who have had them for a long time. You may be surprised when you've been using your remote for a long time and the buttons aren't responding in any way. This can happen even when the batteries are brand new. The buttons on your keyfob are subjected to a lot jostling and can break or become unresponsive with time. If this happens, removing the buttons and cleaning them prior to reseating them will often resolve your problem. If the buttons on your remote aren't working, you might require reprogramming it to match your car's system. This is usually done by turning the ignition key repeatedly while keeping the doors shut. The process will vary depending on the car's model and make, but you should be able to find instructions online or ask an expert for assistance. If the key fob has a plastic exterior it is possible to remove the cover and then pry it off. Be careful not to scratch the buttons or other internal components. The best tool to use to accomplish this is needle-nose pliers with longer tips that can more easily grasp small pieces. Lubricating pliers using putty, super glue or melted tallow will help them grasp delicate parts. It's recommended to have an automotive locksmith do this, as improper methods could damage the electronic components within. The plastic may break if you try to remove the fob with force. It is also possible that the buttons that are attached to it will snap off accidentally if you forcefully pry it apart. Faulty Transponder Chip If you've been able to start your car with the remote key, but you're not able to do it again, it could indicate a problem with the transponder chip. This is because your key relies on this small electronic component to communicate with the immobilizer system. It sends a signal to the system that your key is legitimate and that you should be in a position to start the engine. If the chip is unable to correctly transmit this message the immobilizer will disable your vehicle. This problem is more frequent in older cars However, it can occur in more modern models too. This is because the transponder chip can wear out over time. The chip can be replaced by a locksmith for cars however it is costly. In some instances your chip could be dead. If this is the case, it will need to be replaced by an authorized dealer. This is the most expensive but essential option to get your vehicle back on the road. Another possibility is that the chip inside the key has become damaged, which means it no longer works properly with the immobilizer system. This can happen if the battery is replaced or if your key is physically damaged. A Mesa auto locksmith can resolve this issue, but you may need to visit the dealer to get your key programmed. If you're experiencing issues with your remote key the first thing you should try is a backup. If this doesn't resolve the issue, you should take apart your key fob and examine it visually. Check that none of the buttons appear to be broken or broken. These components see lots of use and may be moved around over time. It is best to have them soldered to the correct position by a professional if they are loose. In most instances, this will restore your key fob to full functionality. This is especially applicable to keys that are accidentally placed in the wrong ignition lock cylinder. Damaged Battery If the key fob still not working even after you have tried a new one, it could be due to other issues. Fobs can be damaged by water, or dropped or stepped on. Internal connections, like ones that connect to battery terminals in the remote, could be damaged or broken. You may need to reprogram your key fob if do not have a spare similar kind and model. Modern key fobs should be programmed to match the vehicle to ensure that only you are able to unlock the doors of your car. This is a crucial step to protect your vehicle and to prevent other people from using your key fob to gain access to your vehicle or cause electrical system problems. Certain engine error codes or wear and tear from normal wear and tear could corrupt the programming and stop your key fob from functioning. It's important to have your key fob reset properly by a professional with the appropriate equipment. It's possible that the problem is with the buttons that are a much more straightforward solution than replacing the entire key fob. Often, key fobs have rubberized buttons that get jostled around all the time and could break or get loose. If remote car key repairs notice that the buttons don't appear to be damaged, you might be able to manually adjust them. It is best to open the key fob and look at it, but be aware. Some key fobs do not have an easy release mechanism. You may need a screwdriver or small tool to remove them. Others are sealed and can't be opened at all without special tools, so you'll likely have to take it to a dealership to have it professionally opened. If you have an extra key fob for the same model and make use of it to start the programming mode of your car. It may require you to shut and lock the doors, switch on and off the lights and electronics, and use a set of buttons in a sequence specific to your car. Failing Buttons If your key fob has buttons that don't work or need to be press very hard to function, it could be the result of mechanical damage. The key fob being dropped on concrete or accidentally hitting one of the buttons with a sharp object can impact the way it works. You'll need take apart the key fob, then examine it to see whether there are any buttons that appear to be damaged. If that is the case, a locksmith could repair it for you. The accumulation of crud or dirt can cause buttons to fail. It is crucial to clean your keys frequently using a cotton swab soaked in alcohol. You may have to scrub the surface on the keys. You should also determine if the issue is related to your car lock or the key fob. If you don't own an extra key, try the keys in a different vehicle to see if it works. The condition of the battery will also determine if you have to change the programming of the key fob. If your keyfob does not function after replacing the batteries, the terminal contacts of the battery may be damaged. You can also deprogram your electronic key fob by pressing the buttons too many times when you are not in range, or by disconnecting the battery in your car. If the key fob is still not functioning after replacing the battery, you should have it reprogrammed by the car. It will depend on the specific car model, but you'll typically require locking and unlocking the doors manually, insert the key into the ignition, turn it to accessory, then press a button on the wireless remote. If this works, the exterior and/or interior lights should light up. You can test the key fob to confirm that it was successfully programmed. In less rare cases, a key fob can not function if there is an issue with the door locks themselves.