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Fiat Panda Key Fob Replacement Fiat Panda key fobs contain transponder chips that send signals to your car to unlock the doors or start the engine. The fob can stop functioning for a variety of reasons. A dead battery for the coin is the most common reason for the malfunction of a key fob. Other causes include water damage or a malfunctioning module and interference signals. Dead Coin Battery If your key fob's battery has died, the first step is to replace it. Make use of a new button battery with exactly the same size, voltage, and specification as the previous one. If the key fob was exposed to water (such as rain or saltwater at the beach) it must be cleaned prior to using it again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner will help. If the key fob hasn't been exposed to water, but it is still not working it could be due to a problem with the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan can aid in these situations. Water Damage It is possible to get water damage to your key fob if it was submerged in a puddle, pool or washing machine. It's generally possible to repair it by taking the batteries off and cleaning the circuit board with rubbing alcohol. It's a good idea let the fob dry completely before putting in a brand new battery. You could have a damaged module when your key fob ceases working after replacing the battery or reprogramming. You can find reprogramming procedures for the majority of vehicles' remote key fobs on YouTube or in your owner's guide. You could also try resetting the car's onboard computer using the OBDII scan tool. Faulty Receiver Module The key fob is equipped with an electronic chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car when it is damaged. Dropping thekeylab.co.uk can cause this, as could water exposure. If your key fob isn't functioning due to water exposure it is possible to fix it if you clean the chip using electronic cleaner or isopropyl alcohol. If the key fob does not respond following cleaning, it is likely that the module is defective and needs to be replaced. A malfunctioning receiver module could also cause the remote control key to stop functioning. This is usually caused by electromagnetic interference. A defective electronic chip The electronic chip in your key fob is a vital role in the anti-theft system of your car. It sends a signal to the immobiliser inside your car to determine if the key is valid. The car will not start in the event that the chip has been damaged. A malfunctioning chip can be caused by interference from other objects, bad weather or transmitters located near your vehicle. In this instance the replacement fob will be required. Faulty Battery Contacts The battery contacts inside a key fob are very delicate and could be damaged when used for long periods of time. If they're damaged or bent, the fob will not send any signals to the receiver modules inside the car. Modern fobs have rubber seals that keep out water. Immersing them in water, even if it's only small splash or drizzle, can damage the chip's electronic circuit. The key fob is equipped with an embedded chip that communicates to the immobilizer system of the vehicle to start it. This system uses crypto coding systems in vehicles that are more modern and the older red key system for older ones. If the chip is defective it must be replaced. Faulty 12 Volt Batterie A defective battery can cause the key fob to cease working. The car's computer won't recognize the remote when this happens. Before replacing the battery, test it using a an voltmeter for determining its capacity. A fully charged battery should display 12.6 volts. If the reading drops significantly, it is time to replace the battery. Place an electrical load for a short time on the battery to gauge its capacity. This will eliminate one percent of the surface charges. Then, you can measure the voltage. The greater the battery's capacity is, the longer it will maintain its voltage. Ideally, it will remain at or near 12 volts for several minutes. Problems with Radio Signal This is the main reason behind a key fob that ceases to send signals to the car. This issue can be fixed by replacing the battery. It is crucial to purchase a battery that has the same dimensions and voltage as the original. Fobs are subject to a lot of punishment, and aren't impervious to destruction. The battery contacts and buttons could be damaged by rough handling. Other transmitters or objects operating on the same frequency can also disrupt the signal. For instance, a lighting control panel near your home may transmit interference using the same frequency that key fobs use. This could affect the remote control of your car. Afflicted OBDII scan tool There are many reasons why scanner tools may not function. Certain are more complicated than others. Professional scan tools enable mechanics to examine the car's systems and conduct a variety self-tests. These can be real time savers, but they can also be very expensive, and beyond the range of most DIYers. If your OBD2 scan tool doesn't turn on, check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If these are both present the chances are that a fuse is blowing. This is the most typical reason for failures of the scanner. It is usually easy to fix the problem by replacing the fuse that was blown.