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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder which transmits signals from the fob to the car in order to unlock doors or turn on the motor. The fob may stop working due to a variety reasons. The most common cause of key fob malfunction is the battery of the coin is dead. Other causes are water damage, a faulty module, and interference signals. Dead Coin Battery Replace the battery in case your key fob has died. Use a button cell that has the same voltage, size, and specifications as the previous one. If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it will have to be cleaned before it can be used again. The best method is to use the paper towel and soak it in isopropyl or electronic cleaner. If the key fob has not been exposed to water but remains inoperable it could be because of a problem with the receiver module or an internal electronic chip. In these instances it is possible that reprogramming the key fob using an OBDII scanner may aid. Water Damage If your key fob has gotten immersed in a pool or puddle or gone to the washing machine, it could have some water damage. It's usually possible to get it working by taking out the batteries and cleaning the circuit board using rubbing alcohol. It is a good idea to let the fob dry completely before installing a new battery. You may have a faulty module in the event that your remote stops working after replacing the battery or changing the programming. mobile can find the instructions for changing the programming of most remote keys on YouTube or refer to your owner's manual. You can also reset the computer of your car using the OBDII scanner tool. Faulty Receiver Module The key fob is equipped with a chip which communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if it becomes damaged. Dropping the key fob can cause this, as well as exposure to water. If the key fob has stopped working after exposure to water it may be possible to fix the issue by cleaning the chip with isopropyl alcohol or an electronic cleaner. If the key fob doesn't respond to cleaning, it is likely that the module is in an issue and must be replaced. A damaged receiver can cause the key to stop working. This is typically caused by electromagnetic interference. A defective electronic chip The electronic chip that is in your key fob plays an important role in the anti-theft system of your car. It sends a message to the immobiliser inside your car that tells it if the key is valid. If the chip is damaged or damaged, your car won't start. A defective chip could be caused by interference from other objects, bad weather or transmitters near your vehicle. In this instance you'll need an entirely new key fob. Contacts of the battery may be damaged. The battery contacts of the fob's key can be damaged by heavy usage. If they are damaged or bent, the key fob won't send any signals to the receiver modules in the car. Modern fobs feature rubber seals that keep out water. In the event of submerging them in water, even if it is just a light drizzle or splash could damage the electronic chip. The key fob has an embedded chip that communicates to the immobilizer system of the vehicle to start it. The system relies on cryptocoding systems in newer vehicles and the older red key system for older models. If the chip is defective it will have to be replaced. Poor 12 Volt Battery A malfunctioning battery could cause the remote to stop working. The car's computer will not recognize the remote when this occurs. Test the battery using the help of a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading falls significantly it is time to replace the battery. Place an electrical load for a short period of time on the battery to check its capacity. This will take off about 1% of the charge on the surface. Then, you can measure the voltage. The longer the battery is able to hold its voltage, the better its capacity. Ideal is that it stays close to 12 volts during several minutes. Faulty Radio Signal This is the most typical reason for a keyfob that ceases to send signals to the car. The battery can be replaced to solve this issue. However, it is important to buy a new battery that has the same voltage and size as the original one. Fobs endure a lot of punishment, and aren't impervious to destruction. Battery contacts and buttons can be damaged by rough handling. The signal could also be impacted by other objects or transmitters that operate on the same frequency. For instance, a light control panel near your home may send interference on the same frequency that key fobs use. This can interfere with your car's remote control. Afflicted OBDII Scan Tool There are a number of reasons why a scanner could not work. Some are more complicated than others. Professional scan tools enable mechanics to look over the car's network and run various self-tests. These tools can help save time, but they're expensive and not accessible to most DIYers. If your OBD2 scan tool won't power on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If all is fine there is a chance that a fuse has blown. This is the most frequent reason for a scan tool to fail. It is generally simple to fix the issue by replacing the fuse that was blown.