Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain an transponder chip that transmits a signal to your car to open the doors and start the engine. However, the fob can stop working for several reasons.
A dead coin battery is the most common reason for key fob malfunctions. Other causes are 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. Use a button cell battery with the same voltage, size, and specifications as the old one.
If the key fob was exposed to water, such as a splash of rain or salt water on the beach, it will have to be cleaned before it can be used again. The best solution is to use a paper towel that has been soaked in isopropyl or electronic cleaner.
If the key fob doesn't working despite not being exposed to water, it could be due a malfunction in the receiver module, or even in the internal electronic chip. Reprogramming the keyfob using an OBDII scan can assist in these situations.
Water Damage
It is possible to get water damage to your key fob if it was submerged in a pool, puddle or washing machine. It's usually possible to get it back to working by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It's a good idea to allow the fob to dry completely before putting in a brand new battery.
If your key fob has stopped working even after replacing the battery and changing the program, you could have a defective receiver module. You can find reprogramming instructions for the majority of vehicles' remote key fobs on YouTube or in the owner's manual. You can also try resetting the car's onboard computer with the OBDII scan tool.
Faulty Receiver Module
The key fob's chip is an electronic chip that communicates with the vehicle's system. If the chip is damaged, it cannot longer send and receive signals to the vehicle. Dropping the key fob could cause this, as well as exposure to water. If the key fob stops functioning after exposure to water, it may be possible to repair it by cleaning the chip using isopropyl alcohol, or electronic cleaner.
However, if the key fob is still unable to not respond after cleaning it, it is likely that the module is defective and will need to be replaced. A faulty receiver can also cause the key to not work. This usually happens due to electromagnetic interference.
Faulty Electronic Chip
The chip inside your key fob plays a vital part in the anti-theft security system of your vehicle. It transmits a message to the immobiliser inside your car to determine whether the key is legitimate. The car will not start if the chip is damaged.
A malfunctioning chip can be caused by interference caused by objects, bad weather or transmitters near your vehicle. In this case it is likely that a new fob would be required.
Contacts for the battery that are defective
The battery contacts of a key fob can be damaged due to heavy use. If they're bent, or broken, the fob won't send any signals to the receiver modules in the vehicle.
Modern fobs have rubber seals that keep out water. Immersing them in water, even if it's just an occasional drizzle or splash, can damage the chip's electronic components.
The key fob has the chip that connects to the vehicle's immobilizer to allow it to start it. The system is based on the red keys of older vehicles, or the cryptocoding system found in newer cars. If the chip is damaged, it will need to 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 when this occurs.
Before replacing the battery, test it with a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading decreases significantly the time is now to replace it.
Put an electrical load for a few moments on the battery to gauge its capacity. This will take off approximately 1% of the surface charge. After that, take the voltage again. The greater the battery's capacity, the longer it can keep its voltage. It should be at or near 12 volts for several minutes.
The radio signal is not working properly. Radio Signal
This is the main cause of a key fob that ceases to send signals to the car. The battery could be replaced to fix this problem. It is crucial to purchase a battery with the same voltage and dimensions as the original.
The buttons are not impervious to destruction and can take a lot. The battery buttons and contacts are delicate and are susceptible to being bent or damaged from rough usage.
A signal may also be interrupted by other transmitters or objects who use the same frequency. For instance, a lighting control panel close to your home can transmit interference using the same frequency that key fobs use. This could interfere with your car's remote control.
Afflicted fiat 500 key fob replacement
There are many reasons why scanners don't perform. Certain 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 but they can be expensive, out of the range of most DIYers.
If your OBD2 scanner doesn't work Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're all fine it could be that a fuse has blown. This is the main reason for failure of the scan tool. It is generally simple to fix the issue by replacing the blown fuse.