Fiat 500 Replacement Key Fob If your remote key fob has stopped working, it may be time to replace the battery. If you replace the battery, but it still doesn't work, the problem may be elsewhere. United Locksmith specializes in the creation of new keys for classic vehicles. We have the tools and spare parts required for this type of service. Dead Coin Battery A dead battery is the most common reason for your Fiat 500 keyfob not locking or unlocking the doors. The key fob contains an in-built battery that is prone to draining quickly when it isn't used often enough. If your remote starts to show signs of a loss of range or has stopped working and the battery is not working, it could be dead. The battery in the key fob is held in place with metal clips that hold it in place. If the clips aren't tightly secured, they could result in contact problems that will prevent your remote from receiving power. By using a small flathead screwdriver, break the retaining clip outwards to remove the current battery and replace it with a new one. Make sure to use a battery with the same size, voltage and specifications as the original. The key fob may also be damaged or corroded due to exposure to water. Even a short bath in soapy, warm water could cause damage to the chip. It is recommended to keep your key fob in a dry environment. Water Damage Water damage could be the reason behind your key fob's not functioning properly. Key fobs have rubber seals that stop them from being damaged by a light rain or a splash of water, but it is very important to keep your car keys away from the pool, ocean and the washing machine! The key fob has an electronic chip inside it that transmits a signal to your car's immobilizer system. This is what allows your 500 to lock or start, but should the chip become wet, it can no longer work. If you're interested in checking whether your key fob functioning it is possible to clean the internal electronics with isopropyl or electronic cleaner. It is best to replace the key fob when it's submerged into salt water rather than attempting to repair it yourself. While a replacement fob can cost a little money, it's much cheaper than having to pay for your Fiat 500 to be towed to the dealership and repaired! You can also fix it yourself with only a few steps. Be sure to use the correct battery type before you attempt to open your key fob. You can find step-bystep instructions for any key fob in your car online. Faulty Chip The chip inside the key fob communicates directly with the immobiliser in your car to ensure that your vehicle will only start when correct keys are inserted. If the chip is damaged or destroyed it won't allow your car to start no matter what you do. Water damage or a dead battery are the two most common causes of an unreliable chip. It is recommended to leave the task to a professional locksmith, who can repair the chip in a short time and at a a reasonable price. If your key fob will not work after being exposed to clean rain or tap water, remove the battery. Clean the electronic component with a paper towel. If the key fob does not function, there's the possibility that it's an issue with the component and requires to be replaced. Some people will go to their dealer when they are in need of an entirely new Fiat key fob, but this could be a costly alternative. United Locksmith is the best choice if you would like to have your Fiat keyfob repaired at a reasonable cost. https://www.thekeylab.co.uk/fiat-car-keys/ have the tools and expertise necessary to fix your Fiat key fob in a timely and professional way. Faulty Receiver Module Fiat key fobs transmit an alert up 50 feet to the vehicle, which can unlock and lock the doors (and start the vehicle in case of automatic transmissions). There are many reasons why the fob might not function. This can be caused by a dead coin-battery, water damage, worn-out buttons an issue with the receiver, signal interference or malfunctioning chips. If the fob is in a pocket which has suffered a severe trauma, such as being dropped on a hard floor or getting washed in a washing machine or dishwasher, it might not be able to communicate with the car's Body Control Module (BCM). The BCM is a security device that can only accept signals from genuine keys. If this is the case, then you must replace your fob. A professional locksmith is able to handle all aspects of the replacement procedure as well as programming a new one for your 500. They can even provide a clone fob that works the same as the original (and costs a fraction of the cost).