An Intermediate Guide For Fiat 500 Keys

Fiat Panda Key Fob Replacement

replacement fiat 500 key Panda keyfobs are equipped with a transponder that sends an electronic signal from the fob to the car that allows it to unlock doors or start the motor. However, the key fob may stop working due to a variety of causes.

The most common cause of key fob malfunction is the battery of the coin is dead. Other causes include water damage malfunctioning receiver modules and signal interference.

Dead Coin Battery

Replace the battery if your key fob has gone out of service. Use a button cell battery with the same voltage, size, and specifications as the previous one.

If the key fob has been exposed to water, for example a splash of rain or salt water at the beach, it will have to be cleaned before it can be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can work wonders.

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

Water Damage

If your key fob took immersed in a pool or puddle or gone down the wash machine, you may have some water damage. It's possible to get it working by taking out the batteries and cleaning the circuit board with rubbing alcohol. It's best to let the circuit board completely dry prior to installing the battery.

If your key fob has stopped working even after replacing the battery and reconfiguring it, you may have a defective receiver module. You can find instructions for reprograming the majority of remote keys on YouTube or refer to the owner's manual. You can also try resetting the car's onboard computer by using the OBDII scan tool.

Faulty Receiver Module

The key fob contains the chip that communicates the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. This could be due to dropping the key fob or by exposure to water. If the key fob is not working after water exposure it may be possible to fix it by cleaning the chip using isopropyl ethanol or electronic cleaner.

However, if the key fob does not respond after cleaning it it is likely that the module is defective and needs to be replaced. A defective receiver module could also cause the remote control key to stop working. This is typically caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob plays an important role in the anti-theft security system of your car. It transmits a message to the immobiliser inside your car to tell it whether the key is genuine. If the chip is damaged or broken, your vehicle will not start.

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

Contacts for the battery that are damaged

The battery contacts of the fob's key can be damaged through heavy use. If they're bent, or damaged, the fob will not transmit any signals to receiver modules inside the vehicle.

Modern fobs feature rubber seals to keep out water. Submerging them in water, even if it's just a light drizzle or splash could damage the electronic chip.

The key fob is equipped with an embedded chip that communicates to the immobilizer system of the vehicle in order to start it. This system utilizes cryptocoding systems in modern vehicles, or the old red key system used in older ones. If this chip is faulty it will have to be replaced.

Faulty 12 Volt Battery

A faulty battery can cause the key fob to stop working. If this happens, the car's computer system will not be able to recognize that the remote is in the vehicle.

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

To test the battery's capacity put an electrical load on it for a few minutes. This will take away 1% of the surface charges. Then, test the voltage once more. The longer a battery can keep its voltage steady more effectively, the greater its capacity. The ideal scenario is to keep it close to 12 volts several minutes.

Radio Signal Faulty Radio Signal

This is the most frequent reason for a key fob that ceases to send signals to the car. The battery can be replaced to solve this problem. However, it is important to purchase a battery that is the same voltage and size as the original.

Fobs aren't impervious to damage and can withstand a lot. The battery buttons and contacts are delicate and can be bent or broken by rough usage.

A signal can also be disrupted by other transmitters or objects that operate on the same frequency. A light control panel in your home, for example could interfere with key fobs that use the same frequency. This could affect the remote control of your car.

The tool is not working properly. OBDII scan tool

There are a number of reasons why a scan tool may not work. Certain are more complicated than others.

Professional scan tools allow a mechanic to monitor the car's network and run a variety of self-tests. These tools can save time, but they're expensive and out of reach for the majority of DIYers.

If your OBD2 scanner won't start examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition, a fuse may have blown. This is one of the most common causes of scan tool failure. It is generally easy to fix the problem by replacing the blown fuse.