Fiat Panda Key Fob Replacement Fiat Panda key fobs contain a transponder chip that sends an alert to your car to open the doors or start the engine However, the key fob may stop working for several reasons The most frequent cause of key fob malfunction is a dead coin battery Other reasons include water damage, a faulty receiver module, and signal interference Dead Coin Battery If your key fob's battery has gone out of service, the first thing to do is replace it Make use of 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 prior to being used again The best method is to use an old towel soaked in isopropyl or electronic cleaner If the key fob has not been exposed to water, but it is still not working, there may be an issue with the receiver module or an internal electronic chip Reprogramming the keyfob through an OBDII scan may assist in these situations Water Damage If your key fob has gotten submerged in a puddle or pool or walked down the washing machine, it could have some water damage It's possible to get it working by taking the batteries off and cleaning the circuit board using rubbing alcohol http//scsiegovhk/TuniS/wwwthekeylabcouk/fiat-car-keys/ 's a good idea to allow the fob to dry completely prior to installing a new battery You could have a damaged module when your key fob ceases working after replacing the battery or replacing it with You can find instructions for the reprogramming of most remote keys on YouTube or consult your owner's manual You could also try resetting the car's computer onboard using the OBDII scan tool Faulty Receiver Module The key fob has a chip that connects to the vehicle's system If this chip becomes damaged, it will no longer transmit or receive signals to the vehicle A key fob falling off can cause this, as well as water exposure If the key fob stopped working after water exposure it may be possible to fix the issue by cleaning the chip using isopropyl alcohol or an electronic cleaner However, if the key fob does not respond even after cleaning it it is likely that the module is defective and will need to be replaced A defective receiver can cause the key to cease to function This is typically caused by electromagnetic interference Electronic chip that is malfunctioning The chip that is embedded in the key fob is a vital part of the anti-theft system in your vehicle It sends a signal to the immobiliser inside your car to inform it whether the key is genuine If the chip is damaged or damaged, your 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 situation you'll require a new key fob Contacts for the battery that are defective The battery contacts on the key fob are delicate and can get damaged when used for long periods of time If they are damaged or bent, the fob won't send any signals to the receiver modules in the car Modern fobs come with rubber seals that keep out water A splash of water or a light rain is fine however, submerging them in saltwater could damage the chip's electronic components The key fob comes with a chip which communicates with the immobilizer system of the vehicle to start it The system utilizes the red keys of older vehicles as well as the cryptocoding system that is used in modern vehicles This chip needs to be replaced if malfunctioning Faulty 12 Volt Battery A malfunctioning battery could cause the key fob to cease working When this occurs, the car's computer system cannot recognize that the remote is within the vehicle Before replacing the battery, you should test it with a a voltmeter to determine its capacity A fully charged battery should read 126 volts If the reading drops significantly then it's time to replace the battery Install an electrical charge for a short period of time on the battery to check its capacity This will take away approximately 1 percent of the surface charge Then measure the voltage again The greater the battery's capacity is, the longer it will maintain its voltage Ideal is to hold close to 12 volts for several minutes Radio Signal Faulty Radio Signal This is the most typical reason for keys not sending signals to the car This issue can be fixed by replacing the battery It is crucial to buy an identical battery dimensions and voltage as the original Fobs endure a lot of abuse, but they're also not impervious to destruction The battery buttons and contacts are brittle which means they could be bent or damaged by rough use https//mysterlingedu/ICS/Academics/LL/LL379__UG12/FA_2012_UNDG-LL379__UG12_-A/Collaborationjnzportlet=Forumsamp;screen=PostViewamp;screenType=changeamp;id=777a340b-719f-4e26-a8a5-64180eafa93a or transmitters using the same frequency can also disrupt the signal A light-control system in your home, for example, may interfere with key fobs using the same frequency This can interfere with the remote control of your car Incorrect OBDII scan tool There are many reasons why scanner tools may not work Some are more complex than others Professional scan tools enable a mechanic observe the car's networks and run various self-tests These tools can save time, but are costly and are out of reach for the majority of DIYers If your OBD2 scan tool won't power on, check voltage at the terminals 16 scantool power and 4 chassis earth If they are all OK it could be that a fuse has been blown This is among the most frequent causes of scan tool failure It is typically simple to fix the issue by replacing the fuse that was blown