fiat remote key Panda Key Fob replacement Car keys Fiat 500

Fiat Panda keyfobs are equipped with a transponder which transmits a signal from the fob to the car to open doors or start the motor. The fob might stop working due to a variety of reasons.

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

Dead Coin Battery

Replace the battery if the key fob has died. Choose a button battery with the same voltage, size and specifications as your previous one.

If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it's going to need to be cleaned before it is able to be used again. A paper towel soaked in alcohol or electronic cleaner will work wonders.

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 cases, reprogramming the key fob using an OBDII scanner can help.

Water Damage

It is possible to get water damage to your key fob if it was submerged in a puddle, pool or washing machine. It's usually possible to get it back to working by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It's best to let the board completely dry before putting in batteries.

You may have a faulty module if your key fob stops working after replacing the battery or changing the programming. You can find information on the reprogramming of most remote keys on YouTube or in your owner's manual. You could also try resetting the car's onboard computer with the OBDII scan tool.

Faulty Receiver Module

The key fob contains a chip which communicates with the vehicle's system. This chip will stop sending and receiving signals to the car when it is damaged. A key fob falling off can cause this, as well as exposure to water. If the key fob has stopped functioning after exposure to water, it may be possible to fix the issue by cleaning the chip using isopropyl alcohol or an electronic cleaner.

If the key fob won't respond to cleaning, it's possible that the receiver module has a fault and needs to be replaced. A faulty receiver can also cause the key to not work. This is typically caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob is a crucial component of the anti-theft systems in your car. It sends out a signal the immobiliser unit inside your car to determine whether or not the key is genuine. If the chip is damaged or broken, your vehicle will not start.

A damaged chip could be caused by interference signals from other objects or weather conditions that are bad, or transmitters operating on the same frequency as your car. In this instance you'll require an entirely new key fob.

Faulty Battery Contacts

The battery contacts in the key fob are delicate and may be damaged when used for long periods of time. If they are bent, or broken, the fob won't send any signals to receiver modules inside the vehicle.

Modern fobs are constructed with rubber seals in order to keep out water. A splash of water or a light rain should be fine however, submerging them in saltwater can harm the chip's electronic components.

The key fob is equipped with a chip which communicates with the immobilizer system of the vehicle to start it. This system utilizes cryptocoding systems in newer vehicles as well as the traditional red key system in older ones. This chip will need to be replaced if malfunctioning.

A faulty 12 Volt battery

A defective battery can cause the key fob to function. The car's computer will not recognize the remote when this happens.

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

Set an electrical load for a short period of time on the battery to test its capacity. This will remove about 1 percent of the charge on the surface. Then, measure the voltage again. The greater the battery's capacity and the longer it can keep its voltage. Ideally, it should remain at or near 12 volts for several minutes.

The radio signal is not working properly. Radio Signal

This is the most frequent reason for a key fob that stops sending signals to the car. This problem can be solved by replacing the battery. However, it is important to choose a battery that has the same size and voltage as the original.

Fobs can take a lot abuse, but they're also not impervious to destruction. The battery contacts and buttons could be damaged through rough handling.

Other transmitters or objects using the same frequency can also interfere with the signal. A light-control panel in your home, for instance could interfere with key fobs which use the same bandwidth. This can affect the remote control of your car.

Faulty OBDII scan tool

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

Professional scan tools permit mechanics to examine the car's systems and run a range of self-tests. These tools can save time, but are expensive and out of reach for the majority of DIYers.

If your OBD2 scan tool won't power on, check voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they are all OK it could be that a fuse has ruptured. This is one of the most frequent causes of scan tool failure. It is often easy to fix the problem by replacing the fuse that was blown.