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Fiat Panda Key Fob Replacement

Fiat Panda keyfobs are equipped with a transponder, which sends a signal from the fob to the car that allows it to unlock doors or start the motor. The fob may stop working for a variety of reasons.

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

Dead Coin Battery

Replace the battery if your key fob is dead. Use a button cell battery that has the same voltage, size, and specification as your old one.

If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it needs to be cleaned before it is able to be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner will do the trick.

If the key fob has not been exposed to water, but still does not work it could be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob through an OBDII scan could assist in these situations.

Water Damage

If your key fob has gotten submerged in a puddle or pool, or taken a trip to the washing machine, you could be suffering some water damage. It's usually possible to restore it's functionality by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's a good idea to let the fob dry completely before putting in a brand new battery.

There could be a problem with the module in the event that your key fob stops working after replacing the battery or updating. There are reprogramming guidelines for all vehicles' remote key fobs on YouTube or in your owner's guide. You could 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. 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 fiat ducato key fob has stopped working after exposure to water it is possible to repair it by cleaning the chip using isopropyl alcohol or an electronic cleaner.

If the key fob doesn't respond to cleaning, it is possible that the module has an issue and should be replaced. A defective receiver module could also cause the remote control key to not function. This is usually caused by electromagnetic interference.

Electronic chip that is malfunctioning

The chip inside your key fob plays an important role in the anti-theft system of your vehicle. It transmits a message to the immobiliser inside your car to inform it if the key is valid. The car will not start if the chip is damaged.

A damaged chip could be caused by interference signals from other objects like bad weather conditions or transmitters on the same frequency as your vehicle. In this case it is likely that a new fob would be needed.

Contacts to the battery are not working properly.

The battery contacts inside the key fob are delicate and may be damaged through repeated use. If they are damaged or bent, the key fob won't send any signals to the receiver modules inside the car.

Modern fobs have rubber seals that keep out water. A splash of water or light rain is fine, but submerging them in saltwater may cause damage to the chip's electronic components.





The key fob contains a chip that communicates with the vehicle's immobilizer to allow it to allow it to start. It uses the old red keys that were used in older vehicles or the cryptocoding system found in modern vehicles. The chip must be replaced if it's damaged.

A faulty 12 Volt battery

A damaged battery could cause the key fob not to function. If this happens, the car's computer system will not recognize that the remote is in the vehicle.

Before you replace the battery, you should test it with a an voltmeter to gauge its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly, it is time to replace the battery.

Place an electrical load for a few seconds on the battery to determine its capacity. This will remove 1percent of the surface charges. Then take another measurement of the voltage. The greater the battery's capacity is, the longer it will keep its voltage. It should be close to 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most frequent reason for the key fob not sending signals to a car. The issue can be fixed by replacing the battery. It is crucial to buy a battery with the same dimensions and voltage as the original.

Fobs are not indestructible and are susceptible to damage. The battery buttons and contacts are delicate which means they could be bent or damaged by rough usage.

Other transmitters or objects operating on the same frequency can disrupt a signal. For instance, a lighting control panel in your home could transmit interference on the same frequency as key fobs utilize. This can affect the remote control of your car.

Faulty OBDII scan tool

There are many reasons scanners don't function. Certain are more complicated than others.

Professional scan tools allow mechanics to monitor the car's network and conduct a variety self-tests. These are great time savers, but they can be expensive, out of the budget of many DIYers.

If your OBD2 scan tool isn't turning on, check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they're both in good shape it's likely that a fuse has failed. This is the main reason for a scan tool to fail. It is usually simple to fix the issue by replacing the fuse that has blown.