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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder, which sends an electronic signal from the fob to the car to open doors or turn on the motor. The fob could stop working due to a variety of reasons. A dead battery for the coin is the most frequent reason for key fob malfunctions. Other reasons include water damage, the receiver module is defective and signal interference. Dead Coin Battery Replace the battery if the key fob has died. Make use of a new button battery with the same voltage, size and specification 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. The best method is to use an old towel soaked in isopropyl or electronic cleaner. If the key fob isn't working despite not being exposed to water it could be due to a malfunction in the receiver module, or even in the internal electronic chip. Reprogramming the keyfob with an OBDII scan could help in these cases. Water Damage If your key fob's battery has taken a bath in the puddle or pool or gone down the washing machine, you could be suffering some water damage. It's possible to get it back in working order by taking out the batteries and cleaning the circuit board using rubbing alcohol. It's a good idea let the fob dry completely before putting in a brand new battery. There could be a problem with the module in the event that your remote stops working after replacing the battery or replacing it with. You can find instructions for changing the programming of most remote keys on YouTube or in your owner's manual. You can also try resetting the car's onboard computer using the OBDII scan tool. Faulty Receiver Module The key fob has the chip that communicates with the vehicle's system. If this chip becomes damaged, it cannot longer transmit or receive signals to the vehicle. This can be caused by dropping the key fob, or by exposure to water. If your key fob isn't working due to exposure to water it is possible fix the issue if you clean the chip using electronic cleaner or isopropylethanol. If the key fob does not respond to cleaning, it is likely that the module is in issues and needs to be replaced. A malfunctioning receiver could cause the key to cease to function. This is usually caused by electromagnetic interference. Electronic chip that is malfunctioning The chip that is embedded in the key fob is an essential part of the anti-theft system in your vehicle. It sends a signal to the immobiliser unit of your car to determine whether the key is in fact valid. If the chip is damaged or broken, the car will not start. A faulty chip can also be caused by interference signals from other objects like bad weather conditions or transmitters operating on the same frequency close to your vehicle. In this case it is likely that a new fob would be required. Faulty Battery Contacts The battery contacts on a key fob can be damaged through heavy use. If they're bent, or damaged, the fob will not send any signals to the receiver modules inside the vehicle. Modern fobs feature rubber seals that keep out water. In the event of submerging them in water, even if it is just small splash or drizzle, can damage the chip's electronic circuit. The key fob has chips that communicate with the vehicle's immobilizer to allow it to allow it to start. The system uses the old red keys for older vehicles, or the cryptocoding system found in the latest vehicles. If the chip is damaged it will have to be replaced. The 12 Volt Battery is faulty A damaged battery could cause the key fob to work. The car's computer will not recognize the remote if this happens. Before fiat ducato key fob thekeylab.co.uk replace the battery, test it with the voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading drops dramatically, it's time to replace it. Put an electrical load for a short time on the battery to determine its capacity. This will remove approximately 1% of the surface charge. Then measure the voltage again. The longer a battery is able to keep its voltage steady and the higher its capacity. The ideal is to keep it close to 12 volts during several minutes. Faulty Radio Signal This is the most typical reason for the key fob not sending signals to the car. This issue can be resolved by replacing the battery. It is crucial to buy a battery with the same dimensions and voltage as the original. Fobs can take a lot abuse, but they're not impervious to destruction. The battery buttons and the contacts are fragile and are susceptible to being bent or broken by rough usage. Other transmitters or objects that use the same frequency may also interfere with a signal. For instance, a lighting control panel close to your home can send interference on the same frequency as key fobs utilize. This could interfere with the remote control of your car. Incorrect OBDII Scan Tool There are many reasons why a scan tool might 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 great time-savers, but they're also expensive, out of the range of most DIYers. If your OBD2 scanner doesn't work examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If they are all OK it could be that a fuse has been blown. This is the main reason for failures of the scanner. The simple fix is usually to replace the fuse that is blowing up.