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 turn on the motor. The fob can stop functioning due to a variety reasons.
The most commonly cited reason for key fob failure is an inoperable coin battery. Other causes include water damages as well as a defective module and interference signals.
Dead Coin Battery
Replace the battery if the key fob has failed. Use a new button cell battery that is identical in size, voltage, and specification as the previous one.
If the key fob was exposed to water (such as rain or saltwater at the beach) It must be cleaned prior to being used again. fiat 500x key is to use an old towel soaked in isopropyl, or electronic cleaner.
If the key fob isn't working despite not being exposed to water, it could be due to a problem in the receiver module or internal electronic chip. In these instances it is possible that reprogramming the key fob with an OBDII scanner can help.
Water Damage
If your key fob has gotten immersed in a puddle or pool or even a trip to the washing machine, you might have some water damage. It's usually possible to repair it by taking the batteries off and cleaning the circuit board using rubbing alcohol. It's best to allow the device to completely dry before putting in batteries.
You may have a faulty module if your key fob stops working after replacing the battery or reprogramming. Reprogramming instructions are available for the majority of vehicles' remote key fobs on YouTube or in the owner's guide. You could also try resetting the car's onboard computer with the OBDII scan tool.
Faulty Receiver Module
The key fob has the chip that communicates the vehicle's system. The chip will stop sending and receiving signals to the car when it is damaged. Dropping the key fob could cause this, as could exposure to water. If the key fob is not working after exposure to water it could be possible to fix the issue by cleaning the chip with isopropyl alcohol or an electronic cleaner.
If the key fob does not respond to cleaning, it's possible that the module has an issue and must be replaced. A malfunctioning receiver module could also cause the remote control key to stop functioning. This is typically caused by electromagnetic interference.
A defective electronic chip
The chip inside your key fob plays a vital function in the anti-theft security system of your car. It sends a signal the immobiliser unit inside your car to inform it whether the key is in fact valid. If the chip is damaged or broken, your car won't start.
A malfunctioning chip can be caused by interference caused by objects, bad weather or transmitters located near your vehicle. In this scenario you'll require an entirely new key fob.
Contacts to the battery are not working properly.
The battery contacts of the key fob could be damaged due to heavy use. If they are damaged or bent, the fob won't send any signals to the receiver modules inside the car.
Modern fobs are constructed with rubber seals in order to keep out water. A splash of water or light rain is acceptable However, submerging them in salt water could cause damage to the electronic chip.
The key fob is equipped with a chip which communicates with the immobilizer system of the vehicle to begin it. It uses the old red keys in older vehicles or the cryptocoding system found in newer vehicles. This chip needs to be replaced if it's defective.
The 12 Volt Battery is faulty
A faulty battery can cause the key fob to cease to function. The car's computer won't recognize the remote if this happens.
Test the battery with a voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops dramatically then it's time to replace it.
Put an electrical load for a short period of time on the battery to check its capacity. This will remove about 1 percent of the surface charge. Then measure the voltage again. The longer a battery is able to keep its voltage steady more effectively, the greater its capacity. Ideal is to hold close to 12 volts during several minutes.
Radio Signal Faulty Radio Signal
This is the most frequent reason behind a key fob that ceases to send signals to the car. This issue can be fixed by replacing the battery. It is important to buy batteries that have the same dimensions and voltage as the original.
Fobs can take a lot abuse, but they're also not impervious to destruction. Battery contacts and buttons can be damaged by rough handling.
Other transmitters or objects that use the same frequency can interfere with a signal. For instance, a light control panel close to your home can transmit interference using the same frequency as key fobs utilize. This can affect the remote control of your car.
The tool is not working properly. OBDII scan tool
There are many reasons why a scanner could not function. Some are more complicated than others.
Professional scan tools enable a mechanic observe the car's networks and run various self-tests. These are real time-savers, but they can also be very expensive, and beyond the reach of most DIYers.
If your OBD2 scan tool fails to turn on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If all is fine there is a chance that a fuse has been blown. This is one of the most frequent reasons for failure of the scanner. The most straightforward fix is to replace the blown fuse.
