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Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder, which sends signals from the fob to the car in order to unlock doors or turn on the motor. The fob could stop working for a variety. The most common reason for key fob failure is a dead coin battery. Other causes include water damage, a faulty module, and interference signals. Dead Coin Battery Replace the battery if your key fob has failed. Make use of a button cell battery that has the same voltage, size and specification as your old one. If the key fob was exposed to water, for example a splash of rain or salt water at the beach, it's going to need to be cleaned before it is able to be used again. The best way to do this is using a paper towel that has been soaked in isopropyl, or electronic cleaner. If the key fob isn't working despite not being exposed to water, it could be due a malfunction in the receiver module or internal electronic chip. Reprogramming the keyfob by using an OBDII scan may assist in these situations. Water Damage You might have water damage if your key fob was submerged in a puddle, pool or washing machine. It's usually possible to get it working by getting rid of the batteries and cleaning the circuit board using rubbing alcohol. It's a good idea let the fob dry completely before putting in a new battery. If your key fob isn't working, even after replacing the battery and reconfiguring it, you may have a problem with the receiver module. You can find information on reprograming the majority of remote keys on YouTube, or consult your owner's manual. You can also reset your car's computer using the OBDII scanner tool. Faulty Receiver Module The key fob has a chip that communicates with the car's system. If this chip becomes damaged, it can no longer send and receive signals to the vehicle. The key fob being dropped can result in this, as can water exposure. If the key fob you have purchased has stopped functioning due to water exposure it is possible fix the issue if you clean the chip with electronic cleaner or isopropyl alcohol. If the key fob does not respond to cleaning, it is possible that the module has issues and needs to be replaced. A damaged receiver module may also cause the remote control key to not function. This is usually caused by electromagnetic interference. Faulty Electronic Chip The electronic chip in your key fob plays a vital function in the anti-theft security system in your car. It transmits a message the immobiliser in your car to inform it that the key is valid. Your car will not start when the chip is damaged. A defective chip could be caused by interference caused by objects, bad weather or transmitters located near your vehicle. In this instance you'll require a new key fob. Contacts with the battery may be damaged. The battery contacts on a key fob are very delicate and can get damaged through repeated use. If they are bent or broken the fob will not transmit any signals to the receiver modules in the car. Modern fobs have rubber seals that block out water. Submerging them in water, even if it's only a light drizzle or splash could damage the chip's electronic components. The key fob has chips that communicate with the vehicle's immobilizer in order to activate it. This system makes use of cryptocoding systems in vehicles that are more modern or the red key system used in older ones. If the chip is defective it will have to be replaced. Problems with 12 Volt Batteries A defective battery can cause the key fob to cease working. The car's computer won't recognize the remote if this occurs. Test the battery with the help of a voltmeter to determine its capacity. A fully charged battery will read 12.6 volts. If the reading drops dramatically, it's time to replace it. Set an electrical load for a few moments on the battery to check its capacity. This will take away 1percent of the charges. Then, you can measure the voltage. The higher the capacity of the battery is, the longer it will keep its voltage. Ideally, it will remain close to 12 volts several minutes. Faulty Radio Signal This is the main reason behind a key fob that stops sending signals to the car. The battery can be replaced to solve this issue. It is important to buy batteries that have the same dimensions and voltage as the original. Fobs can take a lot punishment, and aren't impervious to destruction. The battery contacts and buttons are delicate and are susceptible to being bent or broken with rough use. Other transmitters or objects using the same frequency could also interfere with a signal. For instance, a light-control panel close to your home can transmit interference using the same frequency that key fobs utilize. fiat key can interfere with your car's remote control. Afflicted OBDII Scan Tool There are many reasons scanners don't function. Certain are more complicated than others. Professional scan tools allow a mechanic to look over the car's networks and run a range of self-tests. These tools can save a lot of time, but are costly and are out of reach for most DIYers. If your OBD2 scanner won't start Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are OK it's likely that a fuse is blowing. This is the most frequent cause of scan tool failure. It is often simple to fix the issue by replacing the blown fuse.