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Fiat Panda Key Fob ReplacementFiat Panda keyfobs are equipped with a transponder which transmits signals from the fob to the car in order to unlock doors or start the motor. The fob may stop working due to a variety reasons.The most commonly cited reason for key fob failure is the battery of the coin is dead. Other causes include water damage, an inoperative receiver module, and signal interference.Dead Coin BatteryIf your key fob's battery has died, the first step is to replace it. Make use of a new button battery that is the same voltage, size and specifications as the old one.If the key fob was exposed to water (such as saltwater or rain at the beach) It must be cleaned before using again. thekeylab.co.uk to do this is using an old towel soaked in isopropyl or an electronic cleaner.If the key fob is not working even though it is not exposed to water, it could be due to a glitch in the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan may help in these cases.Water DamageIf your key fob took immersed in a puddle or pool or gone to the washing machine, you could be suffering some water damage. It's usually possible to repair it by getting rid of the batteries and cleaning the circuit board using rubbing alcohol. It's best to let the fob dry completely before installing a new battery.If your key fob stopped working, even after replacing the battery and reprogramming it, you may have a defective receiver module. You can find reprogramming procedures for all vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset the computer of your vehicle using the OBDII scanner tool.Faulty Receiver ModuleThe key fob's chip is a chip that connects to the car's system. The chip will stop sending and receiving signals to the car when it is damaged. Dropping the key fob can cause this, as can water exposure. If your key fob stopped working due to water exposure or water exposure, you might be able to fix it if clean the chip with electronic cleaner or isopropylethanol.However, if the key fob does not respond even after cleaning it it is likely that the component is damaged and needs to be replaced. A defective receiver module could also cause the remote control key to cease functioning. This is usually due to electromagnetic interference.Faulty electronic chipThe electronic chip inside the key fob is a crucial element of the anti-theft device in your car. It sends a message to the immobiliser inside your car to determine whether the key is genuine. The car will not start when the chip is damaged.A malfunctioning chip could be caused by interference signals from objects, bad weather conditions or transmitters on the same frequency as your vehicle. In this instance, you will need an entirely new key fob.Faulty battery contactsThe battery contacts in the key fob are delicate and could be damaged by repeated use. If they're damaged or bent, the key fob will not transmit any signals to the receiver modules in the car.Modern fobs come with rubber seals that keep out water. A splash of water or light rain is fine, but submerging them in salt water could cause damage to the electronic chip.The key fob is equipped with an electronic chip that communicates with the vehicle's immobilizer in order to begin it. The system utilizes the old red keys that were used in older vehicles as well as the cryptocoding system that is used in newer vehicles. If the chip is not working properly it will have to be replaced.Poor 12 Volt BatteryA malfunctioning battery could cause the key fob to cease working. When this occurs the car's computer will not recognize that the remote is in the vehicle.Test the battery with a voltmeter before replacing it to determine its capacity. A fully charged battery should display 12.6 volts. If the reading decreases significantly, it's time to replace it.Put an electrical load for a short period of time on the battery to determine its capacity. This will eliminate 1% of the surface charges. Then take another measurement of the voltage. The longer the battery is able to keep its voltage steady and the higher its capacity. Ideally, it will remain at or near 12 volts for several minutes.Faulty Radio SignalThis is the main reason for the key fob not sending signals to the car. This issue can be fixed by replacing the battery. It is crucial to purchase a battery with the same dimensions and voltage as the original.The buttons are not impervious to destruction and can withstand a lot. The battery buttons and contacts are delicate and are susceptible to being bent or broken by the force of.A signal can also be disrupted by other objects or transmitters who use the same frequency. For instance, a lighting control panel close to your home can send interference on the same frequency that key fobs utilize. This could affect the remote control in your car.Afflicted OBDII scan toolThere are many reasons scanners may not function. Some are more complex than others.Professional scan tools enable mechanics to monitor the car's network and perform various self-tests. These can be real time savers, however they can be expensive, out of the reach of most DIYers.If your OBD2 scan tool isn't turning on, test the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they're both in good shape, it's likely that a fuse has failed. This is the most common cause of scan tool failure. It is often simple to fix the issue by replacing the fuse that has blown.