Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder which transmits an electronic signal from the fob to the car to open doors or turn on the motor. The fob might stop working for a variety of reasons. The most common cause of key fob failure is a dead coin battery. Other reasons include water damage, the receiver module is defective and signal interference. Dead Coin Battery If your key fob battery has gone out of service, the first thing to do is replace it. Use a button cell battery with the same voltage, size and specifications as your previous one. If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned before using again. A paper towel soaked in alcohol or electronic cleaner can be the solution. If the key fob doesn't working despite being not exposed to water it could be due a malfunction in the receiver module or internal electronic chip. Reprogramming the keyfob through an OBDII scan may help in these cases. Water Damage You could have water damage to your key fob if it was submerged in a pool, puddle or washing machine. It is usually possible to get it back to working by taking the battery off and cleaning the circuit board with isopropyl alcohol. It's best to let the board completely dry before installing the battery. There could be a problem with the module if 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 guide. You can also reset the car's computer using the OBDII scanner tool. Faulty Receiver Module The key fob contains a chip which communicates with the vehicle's system. If the chip is damaged, it will no longer transmit and receive signals to the vehicle. This could be due to dropping the key fob, or due to exposure to water. If the key fob you have purchased has stopped functioning due to exposure to water or water exposure, you might be able to fix it if you clean the chip with electronic cleaner or isopropylethanol. However, if https://www.thekeylab.co.uk/fiat-car-keys/ does not respond after cleaning it there is a good chance that the module is faulty and will need to be replaced. A malfunctioning receiver could cause the key to not work. This is typically caused by electromagnetic interference. Faulty Electronic Chip The chip that is embedded in your key fob is an important component of the anti-theft systems in your car. It transmits a message to the immobiliser inside your car to tell it whether the key is genuine. Your car won't start when the chip is damaged. A damaged chip could be caused by interference signals from objects like bad weather conditions or transmitters on the same frequency near your vehicle. In this situation you'll require an entirely new key fob. Contacts for the battery that are defective The battery contacts of the fob's key 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 have rubber seals that block out water. A splash of water or a light rain is fine, but submerging them in saltwater could damage the chip's electronic components. The key fob contains the chip that connects to the vehicle's immobilizer system in order to allow it to start. This system utilizes cryptocoding systems in newer vehicles, or the old red key system for older models. If this chip is faulty it must be replaced. A faulty 12 Volt battery A malfunctioning battery could cause the key fob not to function. The car's system will not recognize the remote if this occurs. Before replacing the battery, test it with an voltmeter for determining its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly it's time to change it. To test a battery's capacity, place an electrical load on it for a few minutes. This will take off about 1% of the charge on the surface. Then, test the voltage again. The greater the battery's capacity, the longer it can keep its voltage. Ideal is to hold close to 12 volts for several minutes. Faulty Radio Signal This is the most common reason for a key fob to stop sending signals to the car. This issue can be fixed by replacing the battery. But, it is essential to buy a new battery that has the same size and voltage as the original. Fobs aren't indestructible and can withstand a lot. Contacts on batteries and buttons can be damaged through rough handling. A signal may also be interrupted by other objects or transmitters that operate on the same frequency. For example, a light-control panel in your home could transmit interference using the same frequency that key fobs utilize. This could interfere with the remote control of your car. Afflicted OBDII Scan Tool There are a variety of reasons why scanner tools may not work. Some are more complex than others. Professional scan tools enable a mechanic observe the car's network, and run various self-tests. These tools can save you a lot of time, but they're expensive and not accessible to the majority of DIYers. If your OBD2 scan tool fails to turn on, make sure you check 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 been blown. This is one of the most common causes of a scan tool failing. The easiest solution is to replace the fuse that has been blown.