Fiat Panda Key Fob Replacement

fiat 500 spare key Panda key fobs contain a transponder chip that sends signals to your car to unlock the doors or start the engine. However, the fob could stop working for several reasons.

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

Dead Coin Battery

Replace the battery if the key fob has gone out of service. Use a brand new button battery that has identical in size, voltage and specifications as the previous one.

If the key fob was exposed to water (such as saltwater or rain at the beach) It must be cleaned prior to using it again. The best way to do this is using a paper towel soaked with isopropyl or electronic cleaner.

If the key fob hasn't been exposed to water but still does not work it could be because of a problem with the receiver module or an internal electronic chip. Reprogramming the keyfob through an OBDII scan could help in these instances.

Water Damage

You could have water damage if your key fob was submerged in a puddle, pool or washing machine. It's usually possible to repair it by taking out the batteries and cleaning the circuit board using ruby alcohol. It's a good idea to allow the fob to dry completely prior to installing a new battery.

If your key fob stopped working even after replacing the battery and reprogramming it, you may have a faulty receiver module. There are instructions for the reprogramming of most remote keys on YouTube or in the owner's manual. You can also reset your car's computer using the OBDII scanner tool.

Faulty Receiver Module

The key fob is equipped with a chip that connects to the car's system. The chip will stop sending and receiving signals to the car if damaged. This can be caused by dropping the key fob or by water exposure. If the key fob has stopped working after water exposure it could be possible to repair it by cleaning the chip with isopropyl ethanol or electronic cleaner.

If the key fob does not respond after cleaning it, it is likely that the module is defective and will require to be replaced. A malfunctioning receiver could cause the key to stop working. This is often caused by electromagnetic interference.

Faulty Electronic Chip

The chip inside your key fob plays a crucial part in the anti-theft security system of your vehicle. It sends a message to the immobiliser in your car to inform it whether the key is genuine. If the chip is damaged or broken, your vehicle won't start.

A faulty chip may also be caused by interference from objects, bad weather or transmitters in the vicinity of your vehicle. In this scenario you'll need a new key fob.

Contacts for the battery that are defective

The battery contacts of the fob's battery can be damaged due to heavy use. If they're bent or broken, the fob won't send any signals to the receiver modules in the vehicle.

Modern fobs are equipped with rubber seals that keep out water. A splash of water or light rain is fine however, submerging them in saltwater may damage the electronic chip.

The key fob is equipped with a chip which communicates with the immobilizer system of the vehicle in order to start it. The system is based on the old red keys that were used in older vehicles or the crypto coding system in modern vehicles. If the chip is not working properly, it will need to be replaced.

Faulty 12 Volt Batterie

A faulty battery can cause the key fob to cease to function. When this occurs the car's computer cannot recognize that the remote is inside the vehicle.

Test the battery using an voltmeter prior to replacing it to determine its capacity. A fully charged battery will read 12.6 volts. If the reading falls significantly, it is time to replace the battery.

Set an electrical load for a few moments on the battery to gauge its capacity. This will remove 1percent of the surface charges. Then, you can measure the voltage again. The longer a battery can hold its voltage greater is its capacity. Ideal is to hold close to 12 volts during several minutes.

The radio signal is not working properly. Radio Signal

This is the most frequent reason for a key fob to stop sending signals to a car. The battery could be replaced to fix this issue. It is important to buy a battery that has the same voltage and dimensions as the original.

The buttons are not impervious to destruction and are susceptible to damage. The battery buttons and contacts are delicate, so they can get bent or damaged from rough use.

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

The tool is not working properly. OBDII scan tool

There are many reasons scanners may not function. Certain are more complicated than others.

Professional scan tools allow a mechanic to observe the car's networks and run a variety of self-tests. These are real time savers but they can also be very expensive, and out of the budget of many DIYers.

If your OBD2 scanner won't start make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition it could be that a fuse has blown. This is among the most frequent reasons for failure of the scanner. The most straightforward fix is to replace the fuse that has been blown.