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What to Do When Your Fiat 500 Key Fob Stops Working If your Fiat 500 key fob stopped working, you have several options. You can replace the coin battery, reprogram it, or get help from a locksmith. In the majority of instances, a dead coin battery is the main reason for an inoperable key fob. It is simple to replace with a brand new battery. Keyless entry While keyless entry provides a lot of convenience It's important to keep in mind that it's not a substitute for a physical car key. To start your car, you'll still need a keyfob with a functioning battery. If the battery in the key fob dies or if it's damaged it could cause problems with the remote. If the key is lost, you'll need to replace it to regain access to your vehicle. The electronic chip in the key fob has a red-key or crypto-key system of coding that communicates with the immobiliser in your vehicle to unlock and start. It also transmits an electronic signal to your car's central locking system, allowing you to open the trunk and doors without having to use your key. If the battery of the key fob is dead, it will no longer send an alert to the central locking system in the car or infotainment systems. The first step is to replace the battery with a new one that is the same size and voltage as the previous one. Make sure the clips aren't loose. This can damage the circuit. Water damage is a common cause of a dead or malfunctioning key fob. The rubber seals on the key fob might be damaged by prolonged exposure to soapy or salty water. If this happens, remove the battery from the key fob and clean it with isopropyl ethanol and paper towels. Ignition Cylinder The ignition cylinder (also called the keylock cylinder) is a vital component of your vehicle that helps to keep it safe and secure. While modern vehicles have a keyless power buttons and push button and start systems traditional ignition cylinders can be still used on a wide range of vehicles. The ignition cylinder is a mechanical tumbler that your key can slide into. Your car won't start when the tumblers are worn out or are failing. The problem is usually caused by the pins inside the cylinder wearing out. This could be evident by the key becoming difficult to turn, or not being able to turn the ignition. Some people have been able to use graphite and WD-40 to fix worn-out cylinders, however, this isn't an effective solution for the long-term. The best solution to fix the issue in your car is to replace the cylinder housing of the ignition lock. Fortunately, this is an simple DIY project which can be completed in a few simple steps. To avoid inquiry disconnect and isolate your negative battery cable prior starting the work. Also, ensure that you refer to the factory repair manual for your particular vehicle. This will assist you in avoid any issues that could arise with the airbag system, or the Supplemental Retard System. Be aware that removal of any component that could affect the SIR and airbag system could be necessary in the event of replacing the cylinder. Key fob Fiat has made a comeback in recent years, and there are a variety of newer Fiat cars on the road. These cars are equipped with key fobs, instead of traditional car keys. You can get a new key fob for Fiat by calling an expert locksmith. You will receive a key fob, which works just as well as the original. This will provide you with the security you require, without worrying should you lose the original key. There may be a remote fob in your Fiat that will unlock the door and start the vehicle. These types of key fobs have a transponder chip that communicates with the immobiliser system in your car. The key fob has an electronic remote that allows you to lock and unlock your vehicle. Key fobs can be programmed to work with a variety of models, including older Fiat vehicles. A professional locksmith can help you with your car in different ways other than simply replacing the key fob. They can, for example create a new key if yours is stolen or lost. This service is more affordable than purchasing a new key from a dealership. In some instances, they'll visit you to cut and program the key right there and then. Remote The key fob inside your Fiat 500 is an important component of your security system. If it ceases to function then you may have to replace it. This process is simple and can be done by a locksmith. You will have to give the locksmith a few pieces of information. First, you should give them the car's make and model. You should also provide the contact details of the owner of the vehicle. There are several reasons why the key fob won't be functioning. A dead battery for the coin is one of the most common reasons. Replace the battery by purchasing a new one with the same size and voltage. It is essential to replace the battery with a fresh one, since a depleted battery can cause damage to the chip. Interference is a further reason why your key fob may not work. This can be caused either due to nearby objects or poor weather conditions. It can also occur if other transmitters are using the same frequency. It is possible to solve this issue by disconnecting the 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 key fob stops working, the most effective solution is to get a replacement programmed. This can be accomplished by a qualified car locksmith. This will save you time and money.