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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder, which sends a signal from the fob to the car to unlock doors or turn on the motor. However, the fob can be inoperable due to various reasons. The most common reason for key fob malfunction is an inoperable coin battery. Other causes include water damages or a damaged module and interference signals. Dead Coin Battery Replace the battery if your key fob has gone out of service. Use a button cell battery with the same voltage, size and specifications as your previous one. If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned prior to being used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can work wonders. 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. In these situations, reprogramming the key fob with an OBDII scanner could help. Water Damage If your key fob's battery has taken an immersion in the pool or puddle or gone down the wash machine, you could be suffering some water damage. It's generally possible to get it back in working order by taking out the batteries and cleaning the circuit board using ruby alcohol. It is a good idea to let the fob dry completely before putting in a new battery. There could be a problem with the module in the event that your key fob stops working after replacing the battery or updating. There are instructions for the reprogramming of most remote keys on YouTube or consult the owner's manual. You could also try resetting the car's onboard computer with the OBDII scan tool. Faulty Receiver Module The key fob contains the chip that communicates the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. Dropping the key fob could cause this, as could water exposure. If your key fob isn't working due to exposure to water or water exposure, you might be able to fix it if you clean the chip using electronic cleaner or isopropyl alcohol. However, if the key fob is still unable to not respond after cleaning it, then it is likely that the component is damaged and will need to be replaced. A malfunctioning receiver module could also cause the remote control key to not function. This is usually caused by electromagnetic interference. Faulty Electronic Chip The electronic chip inside your key fob plays an important function in the anti-theft security system of your car. It transmits a message the immobiliser inside your car to tell it if the key is valid. The car will not start when the chip is damaged. A defective chip could be caused by interference caused by objects, bad weather or transmitters close to your vehicle. In this scenario, you will need a new key fob. Contacts for the battery that are defective The battery contacts of the key fob are fragile and are susceptible to damage through repeated use. If they are damaged or bent, the fob will not transmit any signals to the receiver modules in the car. Modern fobs come with rubber seals to keep out water. A splash of water or light rain is acceptable but submerging them into saltwater may damage the electronic chip. The key fob comes with a chip which communicates with the immobilizer system of the vehicle to start it. This system makes use of cryptocoding systems in the latest vehicles and the older red key system in older models. If this chip is faulty, it will need to be replaced. The 12 Volt Battery is faulty A damaged battery can cause the remote to stop working. If this happens, the car's computer system cannot recognize that the remote is inside the vehicle. Before replacing the battery, test it by using a an voltmeter to gauge its capacity. A fully charged battery will display 12.6 volts. If the reading decreases significantly then it's time to replace it. To test the battery's capacity test the battery's capacity by placing an electrical load on it for a couple of minutes. This will remove approximately 1 percent of the surface charge. Then take another measurement of the voltage. replacement fiat key of the battery is, the longer it will keep its voltage. Ideally, it should remain at or near 12 volts for several minutes. Radio Signal Faulty Radio Signal This is the most common reason for a keyfob that ceases to send signals to the car. The battery can be replaced to fix this issue. However, it is important to purchase a battery with the same size and voltage as the original. The buttons are not impervious to destruction and are susceptible to damage. The battery buttons and the contacts are fragile, so they can get bent or damaged by excessive use. A signal can also be disrupted by other objects or transmitters who use the same frequency. For instance, a light-control panel near your home may send interference over the same frequency as key fobs use. This can interfere with your car's remote control. Faulty OBDII Scan Tool There are many reasons why a scanner tool may not perform. Some are more complex than others. Professional scan tools enable mechanics to look over the car's networks and run a range of self-tests. These can be real time savers but they are also extremely expensive, and out of the range of 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 both are in good condition it could be that a fuse has failed. This is the most typical reason for failure of the scan tool. The easiest fix is to replace the fuse which has blown.