10 Basics Concerning Fiat 500 Keys You Didn't Learn In School Fiat Panda Key Fob Replacement

Fiat Panda keyfobs are equipped with a transponder which transmits an electronic signal from the fob to the car that allows it to unlock doors or start the motor. However, the fob could be inoperable due to various reasons.

A dead battery for the coin is the most common reason for a key fob malfunction. Other causes are water damage, a faulty module, and interference signals.

Dead Coin Battery

If your key fob battery has failed, the initial thing to do is replace it. Choose a button battery that has the same voltage, size, and specifications as the old one.

If the key fob has been exposed to water, such as a splash of rain or salt water on the beach, it will have to be cleaned before it is able to be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can help.

If the key fob has not been exposed to water but isn't working it could be because of a problem with the receiver module or an internal electronic chip. Reprogramming replacement fiat key with an OBDII scan may help in these instances.

Water Damage

If your key fob has taken an immersion in the puddle or pool or walked through the washing machine, you may have some water damage. You can usually be able to get it back up and running by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's best to allow the device to completely dry prior to installing a battery.

You may have a faulty module in the event that your key fob stops working after replacing the battery or replacing it with. You can find reprogramming instructions for most remote key fobs on YouTube or in the owner's guide. You could also try resetting the car's onboard computer by using 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 can result in this, as can water exposure. If the key fob stops working after exposure to water, it may be possible to fix the issue by cleaning the chip with isopropyl ethanol or electronic cleaner.

However, if the key fob does not respond even after cleaning it you can be sure that the module is faulty and will need to be replaced. A malfunctioning receiver could cause the key to cease to function. This is typically caused by electromagnetic interference.

Faulty electronic chip

The electronic chip that is in your key fob plays a vital part in the anti-theft security system of your car. It sends a message to the immobiliser in your car that tells it whether the key is legitimate. If the chip is damaged or damaged, your car will not start.

A defective chip could be caused by interference from objects, bad weather or transmitters near your vehicle. In this case you'll require a new key fob.

Contacts with the battery may be damaged.

The battery contacts inside the key fob are fragile and are susceptible to damage with hard usage. If they're damaged or bent, the key fob won't send any signals to the receiver modules in the car.


Modern fobs have rubber seals that keep out water. In the event of submerging them in water, even if it's just small splash or drizzle could damage the electronic chip.

The key fob contains chips that communicate with 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 the latest vehicles. This chip will have to be replaced if faulty.

Problems with 12 Volt Batteries

A faulty battery may cause the key fob not to function. When this happens, the car's computer system won't recognize that the remote is within the vehicle.

Before you replace the battery, test it by using a an voltmeter to gauge its capacity. A fully charged battery should display 12.6 volts. If the reading falls dramatically, it is time to replace the battery.

To test the battery's capacity put an electrical load on it for a couple of minutes. This will remove one percent of the surface charges. After that, take the voltage again. The longer the battery can hold its voltage more effectively, the greater its capacity. The ideal is to keep it at or near 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most frequent reason for a keyfob that stops sending signals to the car. This issue can be resolved by replacing the battery. It is however important to purchase a battery that has the same voltage and size as the original.

The buttons are not impervious to destruction and can withstand a lot. Contacts on batteries and buttons can be damaged by rough handling.

Other transmitters or objects operating on the same frequency can also interfere with the signal. For instance, a lighting control panel in your home could transmit interference on the same frequency that key fobs utilize. This could affect your car's remote control.

The tool is not working properly. OBDII scan tool

There are many reasons why a scanner tool may not work. Certain are more complicated than others.

Professional scan tools permit mechanics to look over the car's networks and run a variety of self-tests. These tools can save a lot of time, but are costly and out of reach for most DIYers.

If your OBD2 scan tool won't power on, test the voltage at terminals 16 (scantool power) and 4 (chassis earth). If they are all OK, a fuse may have blown. This is among the most frequent causes of scan tool failure. The most straightforward fix is to replace the blown fuse.