Fiat Panda Key Fob Replacement

fiat 500 spare key Panda keyfobs are equipped with a transponder that sends an electronic signal from the fob to the car to unlock doors or turn on the motor. The fob can stop functioning for a variety of reasons.

The most commonly cited reason for key fob malfunction is an inoperable coin battery. Other causes include water damage an inoperative receiver module and signal interference.

Dead Coin Battery

If your key for fiat 500 fob battery has gone out of service, the first step is to replace it. Use a brand new button battery with identical in size, voltage and specification as the previous one.

If the key fob was exposed to water (such as rain or saltwater at the beach), it must 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 isn't working despite not being exposed water, it could be due to a glitch in the receiver module or in the internal electronic chip. In these cases it is possible that reprogramming the key fob with an OBDII scanner may assist.

Water Damage

If your key fob has taken an immersion in the puddle or pool or even a trip through the washing machine, it could have some water damage. It's usually possible to restore it's functionality by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It is best to allow the device to completely dry before putting in batteries.

It could be that you have a defective module if your key fob stops working after replacing the battery or reprogramming. Reprogramming instructions are available for the majority of vehicles' remote key fobs on YouTube or in your owner's guide. You can also try resetting the car's onboard computer with the OBDII scan tool.

Faulty Receiver Module

The key fob is equipped with an electronic chip that communicates with the vehicle's system. If this chip becomes damaged, it cannot longer be able to send or receive signals to the vehicle. Dropping the key fob could cause this, as well as water exposure. If the key fob you have purchased has stopped functioning due to exposure to water it is possible fix the issue if you clean the chip using electronic cleaner or isopropyl alcohol.

If the key fob doesn't respond to cleaning, it's possible that the component has an issue and must be replaced. A defective receiver can cause the key to stop working. This is usually caused by electromagnetic interference.

Faulty electronic chip

The electronic chip that is in your key fob is a vital role in the anti-theft system of your car. It sends a signal to the immobiliser unit in the vehicle to determine whether the key is in fact valid. Your car will not start in the event that the chip has been damaged.

A defective chip could be caused by interference caused by objects, bad weather or transmitters near your vehicle. In this scenario you'll require an entirely new key fob.

Contacts for the battery that are damaged

The battery contacts inside a key fob are very fragile and are susceptible to damage through repeated use. If they are damaged or bent, the fob will not be able to send any signals to the receiver modules in the car.

Modern fobs are made with rubber seals that keep out water. A splash of water or a light rain is acceptable However, submerging them in saltwater may cause damage to the chip's electronic components.

The key fob comes with chip that communicates with the immobilizer system of the vehicle to begin it. The system utilizes the old red keys for older vehicles or the cryptocoding system used in modern vehicles. This chip will have to be replaced if it's faulty.

Problems with 12 Volt Batteries

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

Test the battery using the voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops significantly, it's time to replace it.

Place an electrical load for a short period of time on the battery to check its capacity. This will remove 1percent of the surface charges. Then take another measurement of the voltage. The greater the battery's capacity, the longer it can maintain its voltage. Ideally, it will remain close to 12 volts several minutes.

Radio Signal Faulty Radio Signal

This is the main reason for the key fob to stop sending signals to cars. This problem can be solved by replacing the battery. However, it is crucial to choose a battery with the same voltage and size as the original one.

Fobs can take a lot punishment, and aren't impervious to destruction. Contacts on batteries and buttons can be damaged by rough handling.

A signal may also be disrupted by other transmitters or objects that use the same frequency. A light-control panel at your home, for instance could interfere with key fobs that have the same bandwidth. This could affect the remote control of your car.

Problems with OBDII Scan Tool

There are a number of reasons why a scanner could not function. Certain are more complicated than others.

Professional scan tools enable mechanics to monitor the car's network and run a variety of self-tests. These are great time savers but they can be expensive, and out of the budget of most DIYers.

If your OBD2 scan tool doesn't turn 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 the most frequent reason for failures of the scanner. It is often easy to fix the issue by replacing the fuse blowing up.