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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder which transmits an indication from the fob to the car to unlock doors or turn on the motor. However, the key fob may be inoperable due to various reasons. A dead coin battery is the most common reason for key fob malfunctions. Other causes are water damage, a faulty receiver module and signal interference. 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 your previous one. If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it will need to be cleaned before it can be used again. A paper towel soaked in alcohol or electronic cleaner can work wonders. If the key fob is not working despite being not exposed to water it could be due to a malfunction in the receiver module or an internal electronic chip. Reprogramming the keyfob through an OBDII scan may aid in these situations. Water Damage If your key fob has taken a bath in the pool or puddle or walked down the wash machine, it could have some water damage. You can usually be able to get it back up and running by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It is best to let the fob completely dry before putting in the battery. If fiat doblo key fob replacement stopped working, even after replacing the battery and changing the program, you could have a defective receiver module. You can find instructions for the reprogramming of most remote keys on YouTube or in your owner's manual. You could also try resetting the car's onboard computer with the OBDII scan tool. Faulty Receiver Module The key fob's chip is the chip that communicates the vehicle's system. If the chip is damaged, it cannot longer transmit and receive signals to the vehicle. This could be due to dropping the key fob, or by water exposure. If your key fob isn't working due to water exposure or water exposure, you might be able fix the issue if you clean the chip using electronic cleaner or isopropyl ethanol. However, if the key fob does not respond even after cleaning it you can be sure that the component is damaged and will need to be replaced. A damaged receiver can cause the key to cease to function. This is usually due to electromagnetic interference. A defective electronic chip The electronic chip in your key fob is a vital component of the anti-theft system in your car. It transmits a signal to the immobiliser unit of the vehicle to determine whether or not the key is in fact valid. Your car won't start if the chip is damaged. A damaged chip could be caused by interference signals from other objects such as weather conditions, objects or transmitters operating on the same frequency in close proximity to your car. In this scenario the replacement fob will be required. Contacts of the battery may be damaged. The battery contacts on the fob's key can be damaged by heavy usage. If they are damaged or bent, the fob will not send any signals to the receiver modules in the car. Modern fobs are equipped with rubber seals that block out water. A splash of water or light rain is acceptable However, submerging them in salt water could damage the chip's electronic components. The key fob houses a chip that communicates with the vehicle's immobilizer system to allow it to start. The system uses the old red keys for older vehicles, or the cryptocoding system that is used in the latest vehicles. If the chip is not working properly it will have to be replaced. The 12 Volt Battery is faulty A faulty battery can cause the remote to cease to function. The car's computer won't recognize the remote when this happens. Test the battery with the help of a voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading decreases significantly then it's time to replace the battery. To test a battery's capacity put an electrical load on it for a few minutes. This will eliminate one percent of the surface charges. Then, measure the voltage once more. The longer a battery can keep its voltage steady, the better its capacity. Ideally, it will remain close to 12 volts several minutes. The radio signal is not working properly. Radio Signal This is the most common reason for a key fob to stop sending signals to vehicles. This issue can be resolved by replacing the battery. It is crucial to buy a battery with the same voltage and dimensions as the original. The buttons are not impervious to destruction and can be damaged by a lot. The battery contacts and buttons could be damaged by rough handling. A signal may also be disrupted by other objects or transmitters that use the same frequency. For instance, a light-control panel that is near your home could transmit interference using the same frequency as key fobs use. This could cause interference with the remote control of your car. Problems with OBDII Scan Tool There are many reasons a scanner tool may not work. Some are more complex than others. Professional scan tools enable mechanics to monitor the car's network and run various self-tests. These tools can save you a lot of time, but are expensive and out of reach for most DIYers. If your OBD2 scanner isn't turning on examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition the chances are that a fuse is blowing. This is the main cause of scan tool failure. It is usually simple to fix the issue by replacing the blown fuse.