fiat punto key programming Panda fiat 500x key Fob Replacement

Fiat key code Panda key fobs contain transponder chips that send signals to your car to unlock the doors or start the engine. However, the fob could be inoperable due to various reasons.

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

Dead Coin Battery

Replace the battery in case your key fob is dead. Use a brand new button battery that has exactly the same size, voltage and specification as the previous one.

If the key fob was exposed to water (such as saltwater or rain at the beach) it should be cleaned prior to being used again. The best solution is to use an old towel soaked in isopropyl or an electronic cleaner.

If the key fob hasn't been exposed to water, but it is still not working it could be due to an issue with the receiver module or an internal electronic chip. In these cases, reprogramming the key fob with an OBDII scanner could help.

Water Damage

If your key fob's battery has taken immersed in a pool or puddle or walked down the washing machine, you may have some water damage. It is usually possible to get it working by taking out the batteries and cleaning the circuit board using ruby alcohol. It is best to let the fob completely dry before putting in the battery.

If your fiat punto key fob fob stopped working, even after replacing the battery and programming it again, you might have a malfunctioning receiver module. Reprogramming instructions are available for most vehicles' remote key fobs on YouTube or in your owner's guide. You could also try resetting the car's onboard computer using the OBDII scan tool.

Faulty Receiver Module

The key fob has a chip that communicates with the vehicle's system. If the chip is damaged, it will no longer transmit and receive signals to the vehicle. This can be caused by dropping the key fob or by water exposure. If your key fob stopped working due to exposure to water or water exposure, you might be able fix the issue if you clean the chip with electronic cleaner or isopropyl ethanol.

However, if the key fob is still unable to not respond after cleaning it you can be sure that the component is damaged and needs to be replaced. A faulty receiver can also cause the key to cease to function. This is typically caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob is a vital part of the anti-theft system in your car. It transmits a message the immobiliser in your car that tells it whether the key is legitimate. Your car will not start in the event that the chip is damaged.

A defective chip can be caused by interference signals from objects, bad weather conditions or transmitters operating on the same frequency in close proximity to your vehicle. In this situation an upgrade to the fob will be needed.

Faulty Battery Contacts

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

Modern fobs are equipped with rubber seals that keep out water. Immersing them in water, even if just a light drizzle or splash can harm the electronic chip.

The key fob has chip that communicates with the immobilizer system of the vehicle, allowing it to start it. The system utilizes the old red keys for older vehicles, or the cryptocoding system used in the latest vehicles. This chip will have to be changed if it is malfunctioning.

Problems with 12 Volt Batteries

A damaged battery can cause the key fob to cease working. When this occurs, the car's computer system will not recognize that the remote is in the vehicle.

Test the battery with the help of a voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading drops significantly then it's time to replace the battery.

To test the battery's capacity put an electrical load on it for a couple of minutes. This will remove 1percent of the surface charges. After that, measure the voltage. The greater the battery's capacity is, the longer it will keep its voltage. The ideal is to keep it close to 12 volts during several minutes.

Problems with Radio Signal

This is the main reason for the key fob not sending signals to a car. This issue can be fixed by replacing the battery. But, it is essential to select a replacement battery that is the same size and voltage as the original one.

The buttons are not impervious to destruction and can be damaged by a lot. The battery buttons and contacts are brittle which means they could be bent or broken by rough usage.

A signal may also be impacted by other transmitters or objects who use the same frequency. A light-control panel in your home, for example, may interfere with key fobs that have the same frequency. This can interfere with the remote control of your car.

Afflicted OBDII scan tool

There are many reasons a scanner tool may not perform. Some are more complex than others.

Professional scan tools let a mechanic observe the car's network, and run various self-tests. These can be real time savers but they are also extremely expensive and are out of the reach of most DIYers.

If your OBD2 scan tool fails to turn on, check voltage at terminals 16 (scantool power) and 4 (chassis earth). If all is fine the fuse could have failed. This is one of the most frequent causes of a scan tool failing. The most straightforward fix is to replace the fuse which has blown.