Fiat Panda Key Fob Replacement

fiat key fob replacement Panda key fobs contain transponder chips that send an alert to your car to open the doors or start the engine. The fob could stop working due to a variety of reasons.

A dead battery for the coin is the most common reason for a key fob malfunction. Other causes include water damage a faulty receiver module and signal interference.

Dead Coin Battery

If your key fob's battery has failed, the initial step is to replace it. Use a brand new button battery that is the same size, voltage and specifications 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 using it again. The best way to do this is using the paper towel and soak it in isopropyl or an electronic cleaner.

If the key fob hasn't been exposed to water, but remains inoperable it could be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob by using an OBDII scan could help in these cases.

Water Damage

If your key fob took an immersion in the pool or puddle or even a trip down the wash machine, you might have some water damage. It's possible to repair it by removing the batteries and cleaning the circuit board using ruby alcohol. It is recommended to let the fob completely dry before putting in a battery.

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

Faulty Receiver Module

The key fob's chip is the chip that communicates the vehicle's system. If the chip is damaged, it will be unable to longer be able to send or receive signals to the vehicle. This could be due to dropping the key fob, or due to exposure to water. If the key fob you have purchased has stopped functioning due to water exposure and you are unable fix the issue if you clean the chip with electronic cleaner or isopropyl ethanol.

If the key fob does not respond to cleaning, it's possible that the module has an issue and should be replaced. A defective receiver module could also cause the remote control key to stop functioning. This is usually caused by electromagnetic interference.

A defective electronic chip

The electronic chip that is in your key fob is a vital function in the anti-theft security system of your car. It sends a signal to the immobiliser device in your vehicle to tell it whether or not the key is legitimate. The car won't start if the chip is damaged.

A malfunctioning chip can be caused by interference from objects, bad weather or transmitters near your vehicle. In this situation an upgrade to the fob will be needed.

Contacts to the battery are not working properly.

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

Modern fobs have rubber seals that keep out water. A splash of water or a light rain should be fine however, submerging them in saltwater could damage the electronic chip.

The key fob contains chip that communicates with the immobilizer system of the vehicle to start it. The system is based on the old red keys for older vehicles or the crypto coding system in newer vehicles. If the chip is damaged, it will need to be replaced.

Faulty 12 Volt Batterie

A faulty battery can cause the key fob to cease to function. When this happens the car's computer won't recognize that the remote is within the vehicle.

Before replacing the battery, test it with the voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading drops dramatically then it's time to replace it.

Set an electrical load for a short period of time on the battery to check its capacity. This will take off approximately 1% of the surface charge. Then, measure the voltage once more. The longer a battery can keep its voltage steady, the better its capacity. Ideal is to hold close to 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most common reason for the key fob not sending signals to cars. The battery could be replaced to fix this problem. It is crucial to buy a battery with the same voltage and dimensions as the original.

Fobs take a lot of punishment, and aren't impervious to destruction. Contacts on batteries and buttons can 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, may interfere with key fobs that use the same bandwidth. This can interfere with the remote control in your car.

Incorrect OBDII Scan Tool

There are many reasons why a scanner may not work. Some are more complicated than others.

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

If your OBD2 scanner won't turn on, check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're both in good shape it's possible that a fuse has been blown. This is the most frequent cause of scan tool failure. The easiest solution is to replace the fuse that has been blown.