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What to Do When Your Fiat 500 Key Fob Stops Working There are a number of options available to you when your Fiat 500 keyfob has stopped working. You can replace the coin battery, reprogram it or contact a locksmith for assistance. A dead battery on a coin is the most common reason for the key fob to not work. It is simple to replace with a new battery. Keyless entry It's important to keep in mind that even though keyless entry is convenient, it cannot substitute for a physical key. In order to start the engine, you still require a key fob with a functioning battery. If the key fob battery dies or if it's damaged it could cause problems with the remote. If the key is lost, you will have to replace it in order for access back to your vehicle. The chip in the key fob has a crypto or red key coding system that communicates with the immobiliser unit of your vehicle to open and start it. It also transmits wireless signals to your car's central locking system, allowing you to unlock the trunk and doors without having to use your key. If the battery in the key fob is dead, the signal it sends to the central locking system or infotainment system in the vehicle will be lost. The first thing to do is replace the battery. Make sure that the new battery has the same voltage as the older. Verify that the metal clips are not loose. This could damage the circuit. Water damage is another frequent reason for the malfunctioning or dead key fob. The rubber seals on the key fob might be damaged by exposure to soapy or salty water. If this happens, it's a good idea to remove the battery and clean it up using alcohol and paper towels. Ignition cylinder The ignition cylinder, also referred to as the key lock cylinder, is an important car component that ensures your vehicle is safe and secure. A lot of road vehicles still have traditional ignition cylinders even though many modern vehicles come with keyless and push button power and start systems. The ignition cylinder is the tumbler that mechanically fits into which your key is inserted. If the tumblers are worn or are failing the car won't start. The pins inside the cylinder tend to wear out. One of the signs is that your key is difficult to turn, or it may not be able to enter the ignition in any way. Some people have been able to finesse worn-out cylinders by using graphite or WD-40 however these methods are not permanent and will not fix the issue over the long term. The best way to solve the issue with your car is to replace the ignition cylinder housing. Fortunately, this is an easy DIY project which can be completed in just a few steps. Before starting the job take the time to disconnect and isolate the negative battery cable in order to avoid electrical shorts. Refer to the repair manual from the factory of your car. This will help you to avoid any possible problems with the airbag system or Supplemental Retard System. Be aware that replacing the cylinder housing could require removal of components that could disrupt the SIR or airbag system. Key fob Fiat has been making a comeback in the past few years and there are now many newer Fiats on the road. Many of these vehicles use key fobs rather than traditional car keys. If you are in need of a new fob to your Fiat, you can contact an expert locksmith to obtain one. You will receive a key fob which functions just like the original. This will give you the security you need, without worrying about what to do should you lose your original key. There may be a remote fob for your Fiat that will open the door and begin the vehicle. These key fobs are equipped with an electronic transponder that connects to your vehicle's immobiliser. The key fob has an electronic remote that lets you lock and unlock your vehicle. Key fobs can be programmed to work with various models, including older Fiat vehicles. fiat keys can assist you with your car in more 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 cost you less money, since it is cheaper than buying new keys from a dealership. In some instances they'll even come to your location to cut and program a new key for you on the spot. Remote The key fob in your Fiat 500 is an important component of your security system. You may need to replace it if it stops working. Locksmiths can handle this task. You'll need to give the locksmith the following information. First, you should give them the vehicle model and make. Also, you should provide them with the contact details for the owner of the car. There are many reasons the key fob could stop working. One of the most frequent is a dead coin battery. Replace the battery with one with the same size and voltage. It is crucial to replace the battery with a fresh one, as a drained battery could damage the chip. Interference is another reason that your key fob won't work. This could be caused by close objects, bad weather conditions, and transmitters that operate on the same radio frequency as your Fiat 500. The issue can be resolved by removing the battery for a few minutes. Reconnect the battery in reverse, taking off the positive cable before the negative. If your Fiat 500 remote key stops working, you should have new ones programmed. A professional locksmith for cars can do this for you. This will help you save time and money.