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The Ultimate Glossary Of Terms About Fiat 500 Keys
Fiat Panda Key Fob Replacement

Fiat Panda key fobs contain a transponder chip which sends signals to your car to open the doors and start the engine. The fob can stop functioning for a variety of reasons.

The most common cause of key fob failure is an inoperable coin battery. Other reasons include water damage, a faulty receiver module and signal interference.

Dead Coin Battery

Replace the battery if the key fob has died. Choose a new button battery that is the same size, voltage and specifications as the old one.

If the key fob was exposed to water (such as saltwater or rain at the beach) It must be cleaned prior to using it again. The best method is to use a paper towel soaked with isopropyl, or electronic cleaner.

If the key fob is not working despite not being exposed to water, it could be due a malfunction in the receiver module or internal electronic chip. In these instances it is possible to re-programme the key fob with an OBDII scanner might aid.

Water Damage

You could have water damage to your key fob if it was submerged in a puddle, pool or washing machine. It's generally possible to fix it by getting rid of the batteries and cleaning the circuit board with rubbing alcohol. It is recommended to let the fob completely dry before putting in a battery.

If your key fob isn't working even after replacing the battery and reprogramming it, you may have a problem with the receiver module. Reprogramming instructions are available for all vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset the computer in your car with the OBDII scanner 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. A key fob falling off can cause this, as well as water exposure. If the key fob you have purchased has stopped functioning due to exposure to water and you are unable to fix it by attempting to clean the chip with electronic cleaner or isopropyl alcohol.

If the key fob doesn't respond to cleaning, it is possible that the receiver module has an issue and should be replaced. A damaged receiver can cause the key to not work. This usually happens due to electromagnetic interference.

A defective electronic chip

The electronic chip in your key fob is a crucial element of the anti-theft device in your car. It sends a signal the immobiliser unit in your vehicle to tell it whether or not the key is valid. If the chip is damaged or broken, the car won't start.

A defective chip could be caused by interference from other objects, weather conditions or transmitters in the vicinity of your vehicle. In this situation, a new fob will be required.

Faulty Battery Contacts

The battery contacts of a key fob can be damaged through heavy use. If they're bent, or damaged, the fob will not transmit any signals to receiver modules inside the vehicle.

Modern fobs are constructed with rubber seals to keep out water. A splash of water or light rain is acceptable However, submerging them in saltwater may harm the chip's electronic components.

The key fob has a chip that communicates with the vehicle's immobilizer system in order to begin it. The system uses the red keys of older vehicles, or the cryptocoding system used in modern vehicles. If the chip is not working properly, it will need to be replaced.

Faulty 12 Volt Batterie

A malfunctioning battery could cause the key fob to function. The car's computer won't recognize the remote when this happens.


Before you replace the battery, test it with an voltmeter for determining its capacity. A fully charged battery should read 12.6 volts. If the reading decreases significantly, it's time to replace it.

To test the battery's capacity put an electrical load on it for a couple of minutes. This will take away about 1 percent of the surface charge. Then measure the voltage again. The longer the battery is able to keep its voltage steady more effectively, the greater its capacity. Ideally, it should remain at 12 volts or less for several minutes.

The radio signal is not working properly. Radio Signal

This is the most typical reason for a keyfob that stops sending signals to the car. The issue can be fixed by replacing the battery. However, it is crucial to purchase a battery that has the same size and voltage as the original one.

Fobs can take a lot abuse, but they're not indestructible. The battery buttons and the contacts are fragile, so they can get bent or broken with the force of.

Other transmitters or objects operating on the same frequency may also disrupt the signal. For instance, a light-control panel close to your home can send interference on the same frequency that key fobs use. This can affect the remote control of your car.

Afflicted OBDII scan tool

There are a variety of reasons why scanner tools may not function. Some are more complicated than others.

spare key fiat 500 allow a mechanic to monitor the car's network and perform a variety of self-tests. These tools can save time, but are costly and out of reach for the majority of DIYers.

If your OBD2 scanner doesn't work make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are both present it's possible that a fuse has been blown. This is one of the most frequent reasons for failure of the scanner. It is generally easy to fix the problem by replacing the fuse blowing up.

Read More: https://www.thekeylab.co.uk/fiat-car-keys/