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. However, the fob may be inoperable due to various reasons. A dead battery for the coin is the most common reason for the malfunction of a key fob. Other reasons include water damage, a faulty receiver module, and signal interference. Dead Coin Battery Replace the battery in case your key fob is dead. Choose a new button battery that has identical in size, voltage, and specification as the original. If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned before being used again. The best method is to use a paper towel that has been soaked in isopropyl, or electronic cleaner. If the key fob hasn't been exposed to water but isn't working it could be due to an issue with the receiver module or an internal electronic chip. In these instances it is possible that reprogramming the key fob using an OBDII scanner may help. Water Damage You could have water damage to your key fob if it was submerged in a pool, puddle or washing machine. It's generally possible to repair it by removing the batteries and cleaning the circuit board using ruby alcohol. It is recommended to let the fob completely dry before installing a battery. If your key fob stopped working even after replacing the battery and reconfiguring it, you may have a defective receiver module. You can find instructions for reprogramming most vehicles' remote keys on YouTube or in the owner's manual. You can also reset your computer in your car with the OBDII scanner tool. Faulty Receiver Module The key fob contains a chip that communicates with the vehicle's system. If the chip is damaged, it will no longer be able to send or receive signals to the vehicle. A key fob falling off can cause this, as well as water exposure. If the key fob has stopped functioning after exposure to water, it may be possible to fix it by cleaning the chip with isopropyl alcohol or an electronic cleaner. If the key fob doesn't respond to cleaning, it's possible that the module has an issue and should be replaced. A malfunctioning receiver could cause the key to stop working. This usually happens due to electromagnetic interference. Faulty Electronic Chip The electronic chip in your key fob is an important component of the anti-theft systems in your car. It sends a signal the immobiliser device in the vehicle to determine whether the key is valid. If the chip is damaged or broken, your vehicle will not start. A defective chip can be caused by interference signals from objects, bad weather conditions or transmitters operating on the same frequency in close proximity to your car. In this case, a new fob will be required. Contacts for the battery that are damaged The battery contacts on the key fob could be damaged by excessive usage. If they are bent, or broken, the fob won't transmit any signals to receiver modules in the vehicle. Modern fobs have rubber seals that block out water. Submerging them in water even if just small splash or drizzle could damage the electronic chip. https://www.thekeylab.co.uk/fiat-car-keys/ has an electronic chip that communicates with the vehicle's immobilizer to allow it to start it. The system uses the old red keys in older vehicles as well as the crypto coding system in newer vehicles. If the chip is not working properly and needs to be replaced. Problems with 12 Volt Batteries A malfunctioning battery could cause the key fob not to function. When this happens, the car's computer system will not be able to recognize that the remote is in the vehicle. Test the battery with a voltmeter before replacing it to determine its capacity. A fully charged battery will display 12.6 volts. If the reading falls dramatically, it is time to replace the battery. To test the battery's power, place an electrical load on it for a few minutes. This will take away 1percent of the surface charges. After that, measure the voltage. The better the battery's capacity is, the longer it will keep its voltage. The ideal is to keep it at or near 12 volts for several minutes. Faulty Radio Signal This is the main reason for the key fob not sending signals to a car. The battery could be replaced to fix this problem. It is crucial to buy an identical battery voltage and dimensions as the original. Fobs are not indestructible and can take a lot. The battery buttons and contacts are brittle and can be bent or damaged by the force of. A signal may also be disrupted by other transmitters or objects that operate on the same frequency. For instance, a light control panel that is near your home could transmit interference on the same bandwidth that key fobs use. This could affect the remote control in your car. Problems with OBDII Scan Tool There are many reasons why scanners don't perform. Some are more complicated than others. Professional scan tools allow mechanics to examine the car's systems and run a variety of self-tests. They can be huge time savers, however they can also be very expensive, and out of the budget of many DIYers. If your OBD2 scan tool isn't turning on, test the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If these are OK the chances are that a fuse has failed. This is one of the most common causes of failures in the scan tool. It is generally easy to fix the problem by replacing the fuse that has blown.