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What to Do When Your Fiat 500 Key Fob Stops Working You have several options in the event that your Fiat 500 keyfob has stopped functioning. You can replace the coin battery, reprogram it, or call a locksmith to help. A dead coin battery is often the reason behind an electronic key fob that does not work. It is easy to replace it with a fresh battery. Keyless entry While keyless entry provides a lot of convenience, it's important to keep in mind that it's not a replacement for the physical car key. To start your car, you'll still need the keyfob with a working battery. If the key fob battery is damaged or dies, you may experience problems with the remote. If the key is lost, you'll require replacement for access back to your vehicle. The chip in the key fob is equipped with a red-key or crypto-key coding system that communicates with the vehicle's immobiliser to unlock and start. It also transmits wireless signals to your car's central locking system, which allows you to unlock the trunk and doors without having to use your key. If the battery on the key fob is out of commission, it will no longer send an indication to the car's central locking or infotainment systems. The first step is to replace the battery with a new one that is the same voltage and size that the old one. Make sure the metal clips holding it in place aren't loose, which could damage the internal circuit. Water damage is another common reason for the malfunctioning or dead key fob. While the key fob is equipped with rubber seals long-term exposure to salty or soapy water can damage the electronics. If this happens, it's a good idea to take the battery off and clean it using alcohol and paper towels. Ignition Cylinder The ignition cylinder (also known as the keylock cylinder) is an essential part of your car that assists to keep it secure and safe. Many road vehicles still utilize traditional ignition cylinders, even though many newer cars come with keyless and push button power and start systems. The ignition cylinder is the mechanical tumbler into which your key slides. Your car will not start when the tumblers wear out or are failing. The problem is typically caused by the pins in the cylinder wearing out. The sign of this is that your key may be difficult to turn or may not be able to get into the ignition in any way. Some people have been able use graphite or WD-40 to repair worn-out cylinders but this is not a permanent solution. fiat 500 spare key to solve the problem in your car is to replace the ignition lock cylinder housing. This is a simple DIY project that you can complete in a couple of easy steps. Before starting the work before you begin, disconnect and isolate your negative battery cable to avoid electrical shorts. Refer to the repair manual from the factory of your vehicle. This will allow you to prevent any problems that may arise with the airbag system, or the Supplemental Retard System. Also, be aware that changing the cylinder's housing could require the removal of certain components that could disrupt the SIR or airbag system. Key fob Fiat has made a comeback in the past few years, and there are currently a number of newer Fiats on the road. Many of these vehicles utilize key fobs instead of traditional car keys. You can obtain a brand new key fob for Fiat by getting in touch with a professional locksmith. They will supply you with a key fob that works exactly like the original. This will provide you with the security you require and you won't have to worry about it if you lose the original key. There may be a remote fob in your Fiat that can unlock the door and start the vehicle. Key fobs with this feature have a transponder which communicates with the vehicle's immobiliser. The key fob contains an electronic remote that allows you to lock and unlock your vehicle. Key fobs can be programmed to work with various models including older Fiat vehicles. A professional locksmith can assist you with your car in different ways than just replacing the key fob. They can, for example, program a replacement key if the one you have is stolen or lost. This service can save you money since it's cheaper than having to buy an additional key from a dealership. In some cases they can come to you to cut and program the key on the spot. Remote The key fob that is in your Fiat 500 is an important element of your security system. If it ceases to function, you may need to replace it. Locksmiths can handle this procedure. You'll have to give the locksmith several pieces of information. First, you should give them the car's model and make. Also, you should give the contact details of the owner. There are many reasons the key fob could stop working. One of the most frequent is a dead battery. Replace the battery with a new one that is the same size and voltage. It is crucial to replace the battery with a new one, as a drained battery can damage the chip. Interference is another reason why your key fob won't function. This could be caused by close objects, bad weather conditions, or transmitters that operate on the same radio frequency as your Fiat 500. You can try to resolve this issue by disconnecting your 12 voltage battery for a few minutes. Then reconnect the battery in reverse order, removing the negative cable before connecting the positive. If your Fiat 500 remote key stops working, you should have a new one programmed. A professional locksmith for cars can do this for you. This will save you time and money.