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Fiat Panda Key Fob Replacement

fiat punto key fob Panda key fobs contain an transponder chip that transmits an alert to your car to open the doors or start the engine. However, the fob could stop working due to a variety of causes.

The most frequent cause of key fob failure is the battery of the coin is dead. Other causes are water damage or a damaged module and interference signals.

Dead Coin Battery

If your key fob battery has failed, the initial step is to replace it. Use a brand new button battery with exactly the same size, voltage and specification as the previous one.

If the key fob was exposed to water, like a splash of rain or salt water at the beach, it needs to be cleaned before it is able to be used again. A paper towel soaked with isopropyl alcohol or electronic cleaner can work wonders.

If the key fob is not working even though it is not exposed to water, it could be due to a glitch in the receiver module or internal electronic chip. Reprogramming the keyfob using an OBDII scan may assist in these situations.

Water Damage

If your key fob took a bath in the puddle or pool or gone down the wash machine, you could be suffering some water damage. You can usually restore it's functionality by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It is best to let the fob completely dry before putting in the battery.

It could be that you have a defective module in the event that your key fob stops working after replacing the battery or reprogramming. You can find information on the reprogramming of most remote keys on YouTube or in your owner's manual. You can also reset your computer of your vehicle using the OBDII scanner tool.

Faulty Receiver Module

The key fob has an electronic chip that communicates with the vehicle's system. If the chip is damaged, it will be unable to longer transmit or receive signals to the vehicle. Dropping the key fob could cause this, as could water exposure. If the key fob is not functioning after exposure to water, it is possible to fix it by cleaning the chip using isopropyl alcohol or an electronic cleaner.

If the key fob doesn't respond to cleaning, it's likely that the module is in a fault and needs to be replaced. A defective receiver can cause the key to stop working. This is usually due to electromagnetic interference.

Faulty Electronic Chip

The chip that is embedded in your key fob is an essential part of the anti-theft system in your car. It transmits a signal to the immobiliser unit of the vehicle to determine whether or not the key is in fact valid. Your car won't start when the chip is damaged.

A defective chip could be caused by interference caused by objects, bad weather or transmitters near your vehicle. In this instance, you will need a new key fob.

Faulty battery contacts

The battery contacts in a key fob are very delicate and can get damaged with hard usage. If they're damaged or bent, the fob will not transmit any signals to the receiver modules in the car.

Modern fobs are made with rubber seals in order to keep out water. Immersing them in water, even if it's only a light drizzle or splash could damage the electronic chip.

The key fob has the chip that connects to the vehicle's immobilizer in order to allow it to start. This system utilizes cryptocoding systems in vehicles that are more modern, or the old red key system used in older ones. If the chip is defective it will have to be replaced.

A faulty 12 Volt battery

A faulty battery may cause the key fob to function. The car's computer won't recognize the remote when this occurs.

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

To determine the capacity of a battery test the battery's capacity by placing an electrical load on it for a couple of minutes. This will eliminate 1percent of the surface charges. After that, measure the voltage. The higher the capacity of the battery, the longer it can maintain its voltage. Ideal is to hold close to 12 volts over several minutes.

Faulty Radio Signal

This is the most typical reason for a key fob to stop sending signals to cars. The battery can be replaced to fix this problem. It is important to buy an identical battery dimensions and voltage as the original.

Fobs take a lot of punishment, and aren't indestructible. The battery buttons and contacts are brittle and can be bent or damaged by rough usage.

Other objects or transmitters using the same frequency can disrupt the signal. For instance, a light control panel in your home could transmit interference on the same frequency as key fobs use. This could affect your car's remote control.

Faulty OBDII scan tool

There are many reasons why a scan tool may not work. Some are more complex than others.

Professional scan tools allow a mechanic to observe the car's networks and perform a variety of self-tests. These can be real time savers, however they're also expensive, out of the budget of most DIYers.

If your OBD2 scan tool won't power on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition there is a chance that a fuse has ruptured. This is among the most frequent reasons for failure of the scanner. The simple fix is usually to replace the fuse that is blowing up.