Fiat Panda Key Fob Replacement Fiat Panda keyfobs are equipped with a transponder which transmits an indication from the fob to the car to open doors or start the motor. However, the fob can not function due to a variety of reasons. A dead battery for the coin is the most common cause of key fob malfunctions. https://www.thekeylab.co.uk/fiat-car-keys/ are water damage, a faulty receiver module, and signal interference. Dead Coin Battery Replace the battery in case your key fob has failed. Use a new button cell battery that has the same size, voltage, and specification like the previous one. If the key fob was exposed to water (such as rain or saltwater at the beach) it should be cleaned prior to using it again. The best method is to use a paper towel that has been soaked in isopropyl or an electronic cleaner. If the key fob doesn't working even though it is not exposed to water, it could be due to a glitch in the receiver module or internal electronic chip. In these instances you can reprogramme the key fob with an OBDII scanner could assist. Water Damage You might have water damage if your key fob was submerged in a puddle, pool or washing machine. It is usually possible to fix it by removing the batteries and cleaning the circuit board with rubbing alcohol. It is a good idea to let the fob dry completely before installing a new battery. You could have a damaged module in the event that your remote stops working after replacing the battery or replacing it with. You can find instructions for reprograming the majority of remote keys on YouTube, or consult the owner's manual. You can also reset your car's computer using the OBDII scanner tool. Faulty Receiver Module The key fob is equipped with the chip that communicates the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. Dropping the key fob can cause this, as can exposure to water. If the key fob stopped working after water exposure it may be possible to repair the issue by cleaning or cleaning the chip with isopropyl alcohol or electronic cleaner. If the key fob doesn't respond to cleaning, it is likely that the module is in issues and needs to be replaced. A damaged receiver module may also cause the remote control key to stop working. This is usually caused by electromagnetic interference. Electronic chip that is malfunctioning The electronic chip in your key fob is a vital role in the anti-theft security system in your car. It transmits a message the immobiliser in your car to determine if the key is valid. If the chip is damaged or broken, the car will not start. A malfunctioning chip could be caused by interference signals from objects or weather conditions that are bad, or transmitters on the same frequency close to your car. In this instance an upgrade to the fob will be required. Contacts to the battery are not working properly. The battery contacts in a key fob are very delicate and may be damaged through repeated use. If they're bent or broken, the fob won't send any signals to the receiver modules in the vehicle. Modern fobs are equipped with rubber seals that keep out water. A splash of water or a light rain should be fine however, submerging them in salt water could harm the chip's electronic components. The key fob contains a chip that communicates with the vehicle's immobilizer system to activate it. This system utilizes cryptocoding systems in modern vehicles or the red key system in older models. The chip must be replaced if defective. Poor 12 Volt Battery A defective battery can cause the key fob not to work. When this happens the car's computer will not recognize that the remote is in the vehicle. Before you replace the battery, test it by using a an voltmeter to gauge its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly the time is now to replace it. Put an electrical load for a few seconds on the battery to check its capacity. This will remove 1% of the surface charges. Then take another measurement of the voltage. The longer a battery can hold its voltage greater is its capacity. It should be close to 12 volts for several minutes. Radio Signal Faulty Radio Signal This is the main reason for the key fob not sending signals to cars. This problem can be solved by replacing the battery. However, it is important to purchase a battery that has the same voltage and size as the original one. Fobs take a lot of punishment, and aren't indestructible. The battery buttons and the contacts are fragile and are susceptible to being bent or broken with rough usage. Other transmitters or objects using the same frequency can also disrupt the signal. For instance, a light control panel near your home may transmit interference on the same frequency as key fobs use. This could interfere with the remote control of your car. Faulty OBDII Scan Tool There are many reasons why a scan tool could not function. Certain are more complicated than others. Professional scan tools allow mechanics to observe the car's networks and perform a variety of self-tests. These tools can help save time, but they are costly and out of reach for the majority of DIYers. If your OBD2 scanner doesn't work Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they are all OK the fuse could have been blown. This is among the most common causes of a scan tool failing. It is generally easy to fix the issue by replacing the fuse that has blown.