Fiat 500 Keys Explained In Fewer Than 140 Characters

Fiat Panda Key Fob Replacement

fiat punto evo key Panda key fobs contain a transponder chip that sends signals to your car to unlock the doors or start the engine. The fob could stop working due to a variety reasons.

A dead coin battery is the most common reason for malfunctioning keys. Other causes are water damage, a faulty receiver module and signal interference.

Dead Coin Battery

Replace the battery if the key fob has died. Use a brand new button battery that is the same voltage, size and specification like the previous one.

If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned before using again. The best method is to use the paper towel and soak it in isopropyl or an electronic cleaner.

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

Water Damage

If your key fob has taken an immersion in the pool or puddle or walked through the washing machine, you could be suffering some water damage. It's generally possible to get it back in working order by removing the batteries and cleaning the circuit board with ruby alcohol. It's a good idea to allow the fob to dry completely prior to installing a new battery.

It could be that you have a defective module if your key fob stops working after replacing the battery or changing the programming. You can find instructions for reprograming the majority of remote keys on YouTube, or consult the owner's manual. You can also reset your computer of your car using the OBDII scanner tool.

Faulty Receiver Module

The key fob is equipped with a chip that communicates with the vehicle's system. If this chip becomes damaged, it can no longer transmit and receive signals to the vehicle. A key fob falling off can cause this, as can exposure to water. If your key fob isn't working due to exposure to water, you may be able to fix it by attempting to clean the chip using electronic cleaner or isopropyl alcohol.

If the key fob is still unable to not respond after cleaning it, you can be sure that the component is damaged and must be replaced. A malfunctioning receiver could cause the key to not work. This is usually due to electromagnetic interference.

A defective electronic chip

The electronic chip in the key fob is a vital component of the anti-theft system in your vehicle. It transmits a message to the immobiliser in your car that tells it if the key is valid. Your car won't start in the event that the chip is damaged.

A defective chip could be caused by interference from other objects, bad weather or transmitters located near your vehicle. In this situation it is likely that a new fob would be needed.

Faulty battery contacts

The battery contacts on a key fob are very delicate and can get damaged by repeated use. If they're bent, or damaged, the fob will not send any signals to the receiver modules in the vehicle.

Modern fobs feature rubber seals that keep out water. Immersing them in water, even if it's only the slightest splash or drizzle can harm the chip's electronic components.

The key fob houses a chip that communicates with the vehicle's immobilizer system to begin it. The system utilizes the red keys of older vehicles or the crypto coding system in newer cars. This chip needs to be replaced if defective.

A faulty 12 Volt battery

A malfunctioning battery could cause the spare key fiat 500 fob to stop working. The car's system will not recognize the remote when this happens.

Before replacing the battery, test it with an voltmeter for determining its capacity. A fully charged battery will read 12.6 volts. If the reading drops significantly it is time to replace the battery.

To test a battery's capacity put an electrical load on it for a couple of minutes. This will eliminate one percent of the surface charges. After that, take the voltage again. The longer a battery is able to keep its voltage steady greater is its capacity. It is ideal to maintain close to 12 volts for several minutes.

Problems with Radio Signal

This is the most frequent reason for the key fob not sending signals to cars. The issue can be fixed by replacing the battery. However, it is important to choose a battery that has the same voltage and size as the original.

Fobs endure a lot of abuse, and they aren't indestructible. Contacts and buttons on batteries can be damaged through rough handling.

Other transmitters or objects using the same frequency may also disrupt a signal. For instance, a lighting control panel in your home could send interference over the same frequency as key fobs utilize. This could cause interference with the remote control of your car.

Incorrect OBDII Scan Tool

There are many reasons why a scanner could not work. Some are more complex than others.

Professional scan tools enable a mechanic observe the fiat car keys replacement's networks and run various self-tests. These tools can save you a lot of time, but they're expensive and not accessible to most DIYers.

If your OBD2 scan tool doesn't turn on, test the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If these are OK, it's likely that a fuse has blown. This is one of the most common causes of failures in the scan tool. It is generally easy to fix the problem by replacing the fuse that was blown.