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Fiat Panda Key Fob Replacement Fiat Panda key fobs contain a transponder chip that sends the signal to your vehicle to open the doors and start the engine. However, the fob can be inoperable due to various reasons. The most frequent cause of key fob failure is the battery of the coin is dead. Other causes include water damages as well as a defective 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 specification as your old one. If the key fob has been exposed to water, such as a splash of rain or salt water at the beach, it will need to be cleaned before it is able to be used again. The best solution is to use an old towel soaked in isopropyl or an electronic cleaner. If the key fob has not been exposed to water but still does not work it could be due to a problem with the receiver module or an internal electronic chip. In these instances, reprogramming the key fob with an OBDII scanner can help. Water Damage If your key fob has gotten a bath in the pool or puddle or even a trip down the washing machine, it could have some water damage. It's usually possible to restore it's functionality by taking the battery off and cleaning the circuit board with isopropyl alcohol. It's best to let the fob dry completely prior to installing a new battery. There could be fiat car key with the module in the event that your key fob stops working after replacing the battery or changing the programming. There are instructions for reprograming the majority of remote keys on YouTube or refer to your owner's manual. You can also reset your computer in your car with the OBDII scanner tool. Faulty Receiver Module The key fob contains an electronic chip that communicates with the car's system. If this chip becomes damaged, it can no longer transmit or receive signals to the vehicle. Dropping the key fob can cause this, as well as water exposure. If the key fob stops working after water exposure it may be possible to repair it by cleaning the chip using isopropyl alcohol, or electronic cleaner. If the key fob does not respond to cleaning, it's likely that the module is in a fault and needs to be replaced. A defective receiver can cause the key to not work. This is usually caused by electromagnetic interference. Faulty Electronic Chip The electronic chip that is in your key fob plays a crucial part in the anti-theft security system of your car. It sends a message to the immobiliser inside your car to tell it whether the key is legitimate. Your car won't start in the event that the chip has been damaged. A malfunctioning chip can be caused by interference from objects, bad weather or transmitters near your vehicle. In this scenario an upgrade to the fob will be needed. Contacts of the battery may be damaged. The battery contacts of the fob's key can be damaged by heavy usage. If they're bent, or damaged, the fob will not send any signals to receiver modules inside the vehicle. Modern fobs are designed with rubber seals in order to keep out water. A splash of water or a light rain should be fine, but submerging them in salt water could damage the chip's electronic components. The key fob has the chip that connects to the vehicle's immobilizer in order to begin it. It uses the old red keys for older vehicles or the cryptocoding system used in newer cars. If this chip is faulty and needs to be replaced. Faulty 12 Volt Batterie A damaged battery can cause the key fob to cease to function. If this happens, the car's computer system cannot recognize that the remote is in the vehicle. Before replacing the battery, test it with the voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly it's time to change it. To test the battery's power test the battery's capacity by placing an electrical load on it for a few minutes. This will remove 1percent of the surface charges. Then, test the voltage once more. The longer a battery is able to hold its voltage more effectively, the greater its capacity. Ideal is that it stays close to 12 volts during several minutes. Problems with Radio Signal This is the most typical reason for the key fob to stop sending signals to a car. This problem can be solved by replacing the battery. It is essential to purchase a battery that has the same voltage and dimensions as the original. Fobs aren't indestructible and can take a lot. Battery contacts and buttons can be damaged by rough handling. A signal can also be disrupted by other objects or transmitters that operate on the same frequency. A light-control panel in your home, for instance could interfere with key fobs which use the same bandwidth. This could affect the remote control of your car. The tool is not working properly. OBDII scan tool There are many reasons scanner tools may not perform. Some are more complex than others. Professional scan tools enable mechanics to observe the car's networks and perform a variety of self-tests. These are real time-savers, but they are also extremely expensive, out of the budget of 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 all is fine there is a chance that a fuse has ruptured. This is the most frequent reason for a scan tool to fail. The most straightforward fix is to replace the fuse which has blown.