Fiat Panda Key Fob Replacement Fiat Panda key fobs contain transponder chips that send signals to your car to open the doors or start the engine. The fob might stop working for a variety of reasons. A dead coin battery is the most common reason for a key fob malfunction. Other causes include water damages, a faulty module, and interference signals. Dead Coin Battery Replace the battery in case your key fob has died. Use a button cell that has the same voltage, size, and specifications as your previous one. If the key fob was exposed to water (such as rain or saltwater at the beach) it must be cleaned prior to being used again. The best solution is to use the paper towel and soak it in isopropyl or an electronic cleaner. If the key fob hasn't been exposed to water, but it is still not working it could be a problem with the receiver module or an internal electronic chip. Reprogramming the keyfob through an OBDII scan may help in these instances. Water Damage There could be water damage if your key fob was submerged in a pool, puddle or washing machine. It's generally possible to fix it by taking the batteries off and cleaning the circuit board with ruby alcohol. It's best to let the board completely dry before putting in a battery. You could have a damaged module in the event that your key fob stops working after replacing the battery or changing the programming. There are reprogramming guidelines for the majority of vehicles' remote key fobs on YouTube or in the owner's manual. You can also reset your car's computer using the OBDII scanner tool. Faulty Receiver Module The key fob's chip is a chip which communicates with the vehicle's system. If this chip becomes damaged, it will no longer be able to send or receive signals to the vehicle. A key fob falling off can result in this, as can exposure to water. If the key fob stops functioning after exposure to water, it could be possible to fix it by cleaning the chip using isopropyl alcohol or electronic cleaner. However, if the key fob is still unable to not respond even after cleaning it you can be sure that the module is defective and will require to be replaced. A faulty receiver module can also cause the remote control key to cease functioning. This is often caused by electromagnetic interference. Electronic chip that is malfunctioning The electronic chip in the key fob is a vital component of the anti-theft system in your vehicle. It sends a signal the immobiliser unit in your vehicle to tell it whether the key is legitimate. If the chip is damaged or broken, the car won't start. A defective chip could be caused by interference caused by objects, bad weather or transmitters located near your vehicle. In this case you'll require an entirely new key fob. Faulty Battery Contacts The battery contacts inside the key fob are fragile and are susceptible to damage through repeated use. If they're bent or broken the fob won't send any signals to the receiver modules inside the car. Modern fobs feature rubber seals that keep out water. Immersing them in water, even if it's just an occasional drizzle or splash could harm the electronic chip. The key fob is equipped with an electronic chip that communicates with the immobilizer system of the vehicle to start it. The system utilizes the old red keys in older vehicles as well as the cryptocoding system that is used in newer cars. This chip needs to be replaced if malfunctioning. Problematic 12 Volt Battery A damaged battery can cause the remote to stop working. The car's computer will not recognize the remote if this occurs. Test the battery with the help of a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading falls dramatically it is time to replace the battery. Set an electrical load for a few seconds on the battery to gauge its capacity. This will remove one percent of the surface charges. Then, you can measure the voltage once more. The better the battery's capacity, the longer it can keep its voltage. The ideal scenario is to keep it at 12 volts or less for several minutes. Radio Signal Faulty Radio Signal This is the most common reason for a key fob that ceases to send signals to the car. https://www.thekeylab.co.uk/fiat-car-keys/ could be replaced to fix this problem. However, it is crucial to select a replacement battery that is the same voltage and size as the original. Fobs aren't indestructible and can be damaged by a lot. Battery contacts and buttons can be damaged through rough handling. The signal could also be disrupted by other transmitters or objects which use the same frequency. For instance, a lighting control panel that is near your home could transmit interference using the same frequency as key fobs utilize. This could affect the remote control of your car. Afflicted OBDII scan tool There are a number of reasons why a scanner could not function. Some are more complex than others. Professional scan tools enable mechanics to observe the car's networks and conduct a variety self-tests. These tools can save a lot of time, but they are costly and not accessible to the majority of DIYers. If your OBD2 scan tool won't power on, make sure you check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If all is fine, a fuse may have failed. This is the most common cause of scan tool failure. It is usually easy to fix the issue by replacing the fuse blowing up.