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fiat 500 remote key replacement Panda Key Fob Replacement

fiat 500 car keys Panda key fobs contain a transponder chip which sends a signal to your car to unlock the doors or start the engine. However, the fob could be inoperable due to various reasons.

The most frequent cause of key fob failure is a dead coin battery. Other causes are water damage, a faulty receiver module, and signal interference.

Dead Coin Battery

If your key fob's battery is dead, the first step is to replace it. Make use of a button cell battery with the same voltage, size, and specifications as your previous one.

If the key fob has been exposed to water, for example a splash of rain or salt water on the beach, it's going to need to be cleaned before it is able to be used again. The trick is to use an old towel soaked in isopropyl, or electronic cleaner.

If the key fob hasn't been exposed to water but still does not work it could be due to an issue with the receiver module or an internal electronic chip. In these situations it is possible that reprogramming the key fob with an OBDII scanner could assist.

Water Damage

You might have water damage to your key fob if it was submerged in a puddle, pool or washing machine. It is usually possible to 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 fob to dry completely before putting in a new battery.

If your key fob isn't working, even after replacing the battery and programming it again, you might have a malfunctioning receiver module. There are reprogramming guidelines for the majority of vehicles' remote key fobs on YouTube or in the owner's guide. You can also reset the computer of your car using the OBDII scanner tool.

Faulty Receiver Module

The key fob contains a chip that connects to the vehicle's system. If this chip becomes damaged, it will be unable to longer send and receive signals to the vehicle. This could be due to dropping the key fob, or by water exposure. If the key fob is not working after exposure to water, it could be possible to repair it by cleaning the chip with isopropyl alcohol or electronic cleaner.

If the key fob does not respond to cleaning, it is likely that the module is in a fault and needs to be replaced. A faulty receiver can also cause the key to not work. This is usually caused by electromagnetic interference.

Electronic chip that is malfunctioning

The electronic chip inside your key fob plays a crucial role in the anti-theft security system of your vehicle. It sends a signal to the immobiliser unit inside your car to inform it whether or not the key is genuine. The car won't start when the chip is damaged.

A faulty chip can also be caused by interference signals from objects like bad weather conditions or transmitters on the same frequency near your vehicle. In this situation, you will need an entirely new fiat key key fob.

Contacts to the battery are not working properly.

The battery contacts on the key fob are delicate and could be damaged through repeated use. If they're bent, or broken, the fob won't transmit any signals to receiver modules inside the vehicle.

Modern fobs come with rubber seals that keep out water. A splash of water or a light rain should be fine however, submerging them in saltwater may damage the chip's electronic components.

The key fob contains chips that communicate with the vehicle's immobilizer to allow it to allow it to start. The system is based on the old red keys that were used in older vehicles, or the cryptocoding system used in the latest vehicles. This chip will need to be changed if it is damaged.

A faulty 12 Volt battery

A defective battery can cause the fiat 500 key fob to cease to function. When this happens, the car's computer system cannot recognize that the remote is in the vehicle.

Before replacing the battery, test it using a a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading falls significantly then it's time to replace it.

To test the battery's power, place an electrical load on it for a couple of minutes. This will remove approximately 1% of the surface charge. Then, you can measure the voltage once more. The better the battery's capacity is, the longer it will maintain its voltage. It should be at 12 volts or less for several minutes.

Faulty Radio Signal

This is the most frequent reason for a keyfob that ceases to send signals to the car. The battery could be replaced to fix this problem. However, it is important to purchase a battery that is the same voltage and size as the original one.

Fobs are subject to a lot of punishment, and aren't impervious to destruction. Battery contacts and buttons can be damaged by rough handling.

Other transmitters or objects using the same frequency could also interfere with the signal. For instance, a light control panel that is near your home could send interference over the same bandwidth that key fobs use. This could affect your car's remote control.

Incorrect OBDII scan tool

There are many reasons scanners may not perform. Some are more complex than others.

Professional scan tools let mechanics to monitor the car's network, and run various self-tests. These tools can save you a lot of time, but are expensive and are out of reach for the majority of DIYers.

If your OBD2 scan tool won't power on, test the voltage at terminals 16 (scantool power) and 4 (chassis earth). If all is fine, a fuse may have been blown. This is the most frequent reason for a scan tool to fail. It is often easy to fix the issue by replacing the fuse that was blown.