Why We Enjoy Fiat 500 Keys And You Should, Too

fiat 500 duplicate key are equipped with a transponder that transmits a signal from the fob to the car in order to unlock doors or turn on the motor. However, the fob can stop working for several reasons.

A dead battery for the coin is the most common cause of key fob malfunctions. Other causes include water damages or a malfunctioning module and interference signals.

Dead Coin Battery

Replace the battery in case your key fob has failed. Use a button cell that has the same voltage, size and specification as your old one.

If the key fob was exposed to water, for example a splash of rain or salt water at the beach, it needs to be cleaned before it can be used again. The best method is to use an old towel soaked in isopropyl or electronic cleaner.

If the key fob has not been exposed to water but isn't working, there may be an issue with the receiver module or an internal electronic chip. In these cases, reprogramming the key fob using an OBDII scanner might assist.

Water Damage

It is possible to get water damage to your key fob if it was submerged in a pool, puddle or washing machine. You can usually get it back to working by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's best to allow the device to completely dry before installing a battery.

You could have a damaged module in the event that your key fob stops working after replacing the battery or changing the programming. You can find reprogramming instructions for all vehicles' remote key fobs on YouTube or in the owner's manual. You can also try resetting the car's computer onboard using the OBDII scan tool.

Faulty Receiver Module

The key fob contains an electronic chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if it becomes damaged. Dropping the key fob could cause this, as could exposure to water. If your key fob stopped working due to water exposure or water exposure, you might be able to fix it if clean the chip using electronic cleaner or isopropyl ethanol.

If the key fob is still unable to not respond following cleaning, you can be sure that the receiver module is not functioning properly and will need to be replaced. A faulty receiver can also cause the key to stop working. This is typically caused by electromagnetic interference.

A malfunctioning electronic chip

The electronic chip inside the key fob is a vital component of the anti-theft system in your car. It sends out a signal the immobiliser unit in the vehicle to determine whether or not the key is legitimate. The car will not start in the event that the chip has been damaged.

A malfunctioning chip could be caused by interference signals from objects or weather conditions that are bad, or transmitters on the same frequency in close proximity to your car. In this case you'll require an entirely new key fob.

Contacts to the battery are not working properly.

The battery contacts of a key fob are very fragile and are susceptible to damage by repeated use. If they are damaged or bent, the key fob will not transmit any signals to the receiver modules inside the car.

Modern fobs have rubber seals that block out water. A splash of water or light rain is acceptable but submerging them into saltwater may damage the electronic chip.

The key fob is equipped with a chip which communicates with the immobilizer system of the vehicle, allowing it to start it. The system uses the old red keys for older vehicles or the cryptocoding system used in modern vehicles. This chip will have to be replaced if faulty.

A faulty 12 Volt battery

A malfunctioning battery could cause the key fob to cease working. The car's system will not recognize the remote when this happens.

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

To test the battery's power put an electrical load on it for a few minutes. This will take away 1percent of the charges. After that, measure the voltage. The longer the battery can keep its voltage steady and the higher its capacity. It should be close to 12 volts several minutes.


The radio signal is not working properly. Radio Signal

This is the most frequent reason for the key fob to stop sending signals to vehicles. This issue can be resolved by replacing the battery. It is important to buy an identical battery dimensions and voltage as the original.

Fobs endure a lot of abuse, but they're also not indestructible. The battery buttons and contacts are brittle which means they could be bent or damaged by the force of.

Other transmitters or objects operating on the same frequency may also interfere with the signal. For instance, a lighting control panel that is near your home could transmit interference using the same frequency as key fobs utilize. This can interfere with the remote control of your car.

Incorrect OBDII Scan Tool

There are many reasons why a scan tool could not function. Certain are more complicated than others.

Professional scan tools enable mechanics to monitor the car's network, and run various self-tests. These tools can save a lot of time, but they're expensive and are out of reach for the majority of 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 all fine, a fuse may have been blown. This is among the most frequent causes of a scan tool failing. The easiest fix is to replace the fuse that is blowing up.

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Pub: 26 Apr 2024 08:19 UTC
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