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Fiat Panda Key Fob Replacement Fiat Panda key fobs contain a transponder chip which sends the signal to your vehicle to unlock the doors or start the engine. The fob may stop working for a variety of reasons. A dead battery for the coin is the most frequent reason for a key fob malfunction. Other causes are water damage or a malfunctioning module and interference signals. Dead Coin Battery Replace the battery if your key fob is dead. Use a button cell that has the same voltage, size, and specifications as the previous one. If the key fob was exposed to water (such as rain or saltwater at the beach) it should be cleaned prior to using it again. A paper towel soaked in alcohol or electronic cleaner can be the solution. If the key fob doesn't working even though it is not exposed to water, it could be due to a problem in the receiver module, or even in the internal electronic chip. In these instances it is possible to re-programme the key fob using an OBDII scanner might assist. Water Damage There could be water damage to your key fob if it was submerged in a puddle, pool or washing machine. It is usually possible to fix it by getting rid of the batteries and cleaning the circuit board with ruby alcohol. It's best to allow the fob to dry completely before putting in a new battery. There could be a problem with the module if your key fob stops working after replacing the battery or replacing it with. Reprogramming instructions are available for most vehicles' remote key fobs on YouTube or in the owner's manual. You can also try resetting the car's onboard computer with the OBDII scan tool. Faulty Receiver Module The key fob contains a chip that communicates with the vehicle's system. If the chip is damaged, it will be unable to longer transmit and receive signals to the vehicle. Dropping the key fob could cause this, as could water exposure. If the key fob stops working after exposure to water, it could be possible to fix it by cleaning the chip with isopropyl ethanol or electronic cleaner. If the key fob does not respond to cleaning, it's possible that the module has a fault and needs to be replaced. A damaged receiver can cause the key to not work. This is usually caused by electromagnetic interference. Faulty Electronic Chip The electronic chip inside the key fob is a vital element of the anti-theft device in your car. It sends a message to the immobiliser in your car to tell it whether the key is legitimate. The car won't start when the chip is damaged. A malfunctioning chip could be caused by interference signals from objects like bad weather conditions or transmitters on the same frequency in close proximity to your vehicle. In this instance, you will need a new key fob. fiat punto key replacement for the battery that are damaged The battery contacts in the key fob are delicate and could be damaged through repeated use. If they are damaged or bent, the key fob will not transmit any signals to the receiver modules inside the car. Modern fobs are designed with rubber seals to keep out water. A splash of water or a light rain should be fine however, submerging them in saltwater could damage the chip's electronic components. The key fob is equipped with a chip which communicates with the immobilizer system of the vehicle to begin it. It uses the old red keys that were used in older vehicles or the cryptocoding system that is used in newer vehicles. If the chip is not working properly and needs to be replaced. Faulty 12 Volt Batterie A faulty battery can cause the remote to cease to function. The car's system will not recognize the remote if this occurs. Before replacing the battery, you should test it with a a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading falls significantly, it's time to replace it. Install an electrical charge for a short period of time on the battery to determine its capacity. This will take away one percent of the surface charges. Then, you can measure the voltage. The longer the battery can keep its voltage steady, the better its capacity. It should be at or near 12 volts for several minutes. Radio Signal Faulty Radio Signal This is the main reason behind a key fob that ceases to send signals to the car. The battery is able to be replaced to resolve this problem. However, it is crucial to select a replacement battery that has the same voltage and size as the original one. Fobs take a lot of punishment, and aren't impervious to destruction. The battery contacts and buttons could be damaged through rough handling. Other objects or transmitters using the same frequency can disrupt a signal. A light-control panel in your home, for instance can interfere with key fobs that use the same bandwidth. This could interfere with the remote control of your car. Incorrect OBDII Scan Tool There are a number of reasons why a scanner could not function. Some are more complicated than others. Professional scan tools allow mechanics to look over the car's networks and run a range of self-tests. These tools can save time, but they're expensive and are out of reach for the majority of DIYers. If your OBD2 scanner doesn't work examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are both present it's likely that a fuse has been blown. This is among the most frequent causes of a scan tool failing. The simple fix is usually to replace the fuse that has been blown.