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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder that sends an indication from the fob to the car to open doors or turn on the motor. However, the fob could not function due to a variety of reasons. TheKeyLab for key fob malfunction is the battery of the coin is dead. Other causes include water damage a faulty receiver module and signal interference. Dead Coin Battery Replace the battery if the key fob is dead. Choose a new button battery with the same size, voltage and specification as the original. If the key fob was exposed to water, like a splash of rain or salt water at the beach, it needs to be cleaned before it can be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner will help. If the key fob hasn't been exposed to water but still does not work it could be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan could aid in these situations. Water Damage It is possible to get water damage if your key fob was submerged in a puddle, pool or washing machine. You can usually get it working again by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's a good idea allow the fob to dry completely prior to installing a new battery. You could have a damaged module in the event that your key fob stops working after replacing the battery or replacing it with. You can find information on reprograming the majority of remote keys on YouTube or in the owner's manual. You can also reset the car's computer using the OBDII scanner tool. Faulty Receiver Module The key fob has an electronic chip that communicates with the car's system. If this chip becomes damaged, it cannot longer be able to send or receive signals to the vehicle. This can be caused by dropping the key fob or through exposure to water. If the key fob you have purchased has stopped functioning due to water exposure and you are unable to fix it if clean the chip using electronic cleaner or isopropyl ethanol. If the key fob does not respond to cleaning, it's possible that the component has an issue and must be replaced. A faulty receiver can also cause the key to not work. This is typically caused by electromagnetic interference. Electronic chip that is malfunctioning The chip inside your key fob plays an important function in the anti-theft security system of your vehicle. It transmits a message the immobiliser in your car that tells it if the key is valid. If the chip is damaged or broken, the car won't start. A defective chip can be caused by interference signals from other objects like bad weather conditions or transmitters operating on the same frequency close to your vehicle. In this instance you'll need an entirely new key fob. Contacts to the battery are not working properly. The battery contacts on the fob's battery can be damaged by heavy usage. If they're damaged or bent, the key fob will not send any signals to the receiver modules inside the car. Modern fobs come with rubber seals in order to keep out water. Submerging them in water even if just the slightest splash or drizzle can harm the chip's electronic components. The key fob is equipped with an electronic chip that communicates with the vehicle's immobilizer to allow it to start it. The system relies on cryptocoding systems in the latest vehicles, or the old red key system used in older models. If this chip is faulty, it will need to be replaced. Faulty 12 Volt Batterie A damaged battery could cause the key fob not to function. The car's computer may not recognize the remote if this happens. Before replacing the battery, test it by using a an voltmeter to gauge its capacity. A fully charged battery should read 12.6 volts. If the reading drops dramatically the time is now to replace it. Set an electrical load for a few moments on the battery to determine its capacity. This will take off about 1 percent of the surface charge. Then measure the voltage again. The higher the capacity of the battery and the longer it can maintain its voltage. Ideal is that it stays at or near 12 volts for several minutes. The radio signal is not working properly. Radio Signal This is the main reason for keys not sending signals to cars. The battery can be replaced to fix this problem. It is crucial to buy batteries that have the same voltage and dimensions as the original. Fobs are subject to a lot of punishment, and aren't indestructible. The battery buttons and contacts are delicate, so they can get bent or broken by rough use. Other transmitters or objects that use the same frequency may also disrupt the signal. For instance, a light control panel near your home may send interference on the same bandwidth that key fobs utilize. This can affect the remote control of your car. Afflicted OBDII scan tool There are a number of reasons why a scanner may not work. Some are more complicated than others. Professional scan tools allow a mechanic to observe the car's networks and run a variety of self-tests. These tools can save you a lot of time, but they're expensive and out of reach for most DIYers. If your OBD2 scanner won't turn on Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are OK it's likely that a fuse has blown. This is the most typical reason for a scan tool to fail. The most straightforward fix is to replace the fuse that is blowing up.