fiat 500x key Panda Key Fob Replacement

new fiat 500 key Panda keyfobs are equipped with a transponder that transmits an indication from the fob to the car to unlock doors or turn on the motor. The fob may stop working due to a variety reasons.

The most frequent cause of key fob malfunction is a dead coin battery. Other causes include water damage the receiver module is defective, and signal interference.

Dead Coin Battery

Replace the battery in case your key fob has gone out of service. Use a brand New Fiat 500 Key Fob button battery with exactly the same size, voltage and specification as the old one.

If the key fob was exposed to water (such as saltwater or rain at the beach) it must be cleaned before being used again. A paper towel soaked in isopropyl alcohol or electronic cleaner will work wonders.

If the key fob isn't working despite not being exposed water, it could be due to a glitch in the receiver module, or even in the internal electronic chip. In these situations it is possible that reprogramming the key fob with an OBDII scanner could aid.

Water Damage

If your key fob's battery has taken a bath in the pool or puddle or walked down the wash machine, you could be suffering some water damage. It's usually possible to get it working again by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's best to let the circuit board completely dry prior to installing the battery.

You could have a damaged module in the event that your key fob stops working after replacing the battery or reprogramming. You can find reprogramming procedures for most vehicles' remote key fobs on YouTube or in the owner's manual. You can also reset your computer of your vehicle using the OBDII scanner tool.

Faulty Receiver Module

The key fob is equipped with the chip that communicates the vehicle's system. If this chip becomes damaged, it will be unable to longer transmit or receive signals to the vehicle. This could be due to dropping the key fob, or through exposure to water. If the key fob you have purchased has stopped functioning due to exposure to water or water exposure, you might be able to fix it by attempting to clean the chip with electronic cleaner or isopropylethanol.

If the key fob does not respond to cleaning, it's likely that the module is in an issue and must be replaced. A malfunctioning receiver could cause the key to stop working. This usually happens due to electromagnetic interference.

Faulty Electronic Chip

The chip that is embedded in your key fob is an important component of the anti-theft systems in your vehicle. It sends a signal to the immobiliser in your car to determine that the key is valid. If the chip is damaged or broken, your vehicle will not start.

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

Contacts to the battery are not working properly.

The battery contacts inside a key fob are very fragile and are susceptible to damage by repeated use. If they are bent, or broken, the fob won't send any signals to the receiver modules inside the vehicle.

Modern fobs have rubber seals to keep out water. Immersing them in water, even if it is just an occasional drizzle or splash could harm the chip's electronic circuit.

The key fob is equipped with chips that communicate with the vehicle's immobilizer system in order to activate it. The system utilizes the red keys of older vehicles or the cryptocoding system found in modern vehicles. This chip will have to be replaced if defective.

A faulty 12 Volt battery

A damaged battery could cause the key fob not to work. The car's computer won't recognize the remote when this occurs.

Before replacing the battery, test it by using a an voltmeter for determining its capacity. A fully charged battery will read 12.6 volts. If the reading drops significantly, it is time to replace the battery.

Place an electrical load for a few seconds on the battery to test its capacity. This will take away 1% of the surface charges. After that, measure the voltage. The longer the battery can hold its voltage and the higher its capacity. Ideally, it should remain at 12 volts or less for several minutes.

Faulty Radio Signal

This is the most typical reason for a key fob to stop sending signals to cars. This problem can be solved by replacing the battery. It is however important to select a replacement battery with the same size and voltage as the original.

Fobs aren't indestructible and are susceptible to damage. The battery buttons and contacts are brittle and are susceptible to being bent or damaged by excessive use.

Other transmitters or objects operating on the same frequency may also disrupt the signal. A light-control panel at your home, for example could interfere with key fobs that use the same frequency. This could cause interference with your car's remote control.

Faulty OBDII scan tool

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

Professional scan tools enable a mechanic observe the car's network, and run various self-tests. They can be huge time-savers, but they can also be very expensive, out of the budget of many DIYers.

If your OBD2 scan tool won't power on, check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition it could be that a fuse has been blown. This is one of the most common causes of failures in the scan tool. The simple fix is usually to replace the fuse that is blowing up.