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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder that transmits a signal from the fob to the car in order to unlock doors or start the motor. The fob might stop working for a variety. The most frequent cause of key fob failure is an inoperable coin battery. Other causes are water damage, malfunctioning receiver modules, and signal interference. Dead Coin Battery If your key fob's battery has died, the first step is to replace it. Use a brand new button battery that is identical in size, voltage and specification like the previous one. If the key fob was exposed to water, for example a splash of rain or salt water at the beach, it needs to be cleaned before it is able to be used again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner can be the solution. If key for fiat 500 TheKeyLab is not working despite being not exposed to water, it could be due to a problem in the receiver module or an internal electronic chip. Reprogramming the keyfob by using an OBDII scan could help in these instances. Water Damage If your key fob took submerged in a puddle or pool or gone to the washing machine, you may have some water damage. It's usually possible to restore it's functionality by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It's best to allow the fob to dry completely before installing a new battery. You could have a damaged module if your key fob stops working after replacing the battery or reprogramming. There are reprogramming guidelines for the majority of vehicles' remote key fobs on YouTube or in the owner's manual. You can also try resetting the car's computer onboard using the OBDII scan tool. Faulty Receiver Module The key fob's chip is a chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car if it becomes damaged. The key fob being dropped can result in this, as can water exposure. If the key fob is not working after water exposure it may be possible to repair the issue by cleaning or cleaning the chip using isopropyl alcohol, or electronic cleaner. However, if the key fob continues to not respond after cleaning it, then it is likely that the receiver module is not functioning properly and needs to be replaced. A defective receiver can cause the key to cease to function. This is usually due to electromagnetic interference. Faulty Electronic Chip The electronic chip inside your key fob is an important part of the anti-theft system in your car. It sends a signal to the immobiliser inside your car to tell it whether the key is genuine. If the chip is damaged or damaged, your car won't start. A faulty chip may also be caused by interference from other objects, bad weather or transmitters close to your vehicle. In this case the replacement fob will be required. Contacts for the battery that are defective The battery contacts in a key fob are very delicate and can get damaged by repeated use. If they are damaged or bent, the key fob will not transmit any signals to the receiver modules in the car. Modern fobs are constructed with rubber seals in order to keep out water. A splash of water or light rain should be fine, but submerging them in saltwater could harm the electronic chip. The key fob is equipped with an electronic chip that communicates with the vehicle's immobilizer system to allow it to start. It uses the old red keys that were used in older vehicles or the cryptocoding system used in the latest vehicles. If the chip is not working properly it must be replaced. Poor 12 Volt Battery A damaged battery can cause the key fob to cease working. When this occurs the car's computer won't recognize that the remote is inside the vehicle. Test the battery using an voltmeter prior to replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops significantly it's time to change it. To test the battery's capacity put an electrical load on it for a few minutes. This will take off approximately 1 percent of the surface charge. After that, measure the voltage. The longer the battery is able to keep its voltage steady and the higher its capacity. It is ideal to maintain close to 12 volts over several minutes. The radio signal is not working properly. Radio Signal This is the most common cause of a key fob that ceases to send signals to the car. This problem can be solved by replacing the battery. It is important to buy batteries that have the same voltage and dimensions as the original. Fobs are not indestructible and are susceptible to damage. The battery contacts and buttons could be damaged by rough handling. Other objects or transmitters using the same frequency can also interfere with a signal. For instance, a light-control panel near your home may send interference on the same bandwidth that key fobs use. This can affect the remote control of your car. Problems with OBDII Scan Tool There are many reasons why a scan tool could not work. Some are more complicated than others. Professional scan tools enable mechanics to observe the car's networks and run various self-tests. These are real time savers, but they're also expensive, and out of the budget of most DIYers. If your OBD2 scanner doesn't work Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If all is fine there is a chance that a fuse has ruptured. This is among the most common causes of scan tool failure. It is generally simple to fix the issue by replacing the fuse that was blown.