20 Truths About Fiat 500 Keys: Busted

fiat 500 lost key panda key fob (click to investigate) fiat replacement key

reprogram fiat 500 key fob Panda key fobs contain transponder chips that send a signal to your car to unlock the doors or start the engine. However, the fob can be inoperable due to various reasons.

The most frequent cause of key fob failure is the battery of the coin is dead. Other causes include water damage as well as a defective module and interference signals.

Dead Coin Battery

If your key fob battery is dead, the first step is to replace it. Use a button cell battery that has the same voltage, size and specification as your old one.

If the key fob was exposed to water (such as rain or saltwater at the beach), it must be cleaned prior to being used again. The best method is to use a paper towel soaked with isopropyl or an electronic cleaner.

If the key fob hasn't been exposed to water, how do i Get a spare key For my fiat 500 but still does not work it could be due to a problem with the receiver module or an internal electronic chip. In these situations you can reprogramme the key fob using an OBDII scanner may aid.

Water Damage

If your key fob's battery has taken submerged in a pool or puddle or even a trip down the washing machine, you may have some water damage. It is usually possible to get it back to working by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's a good idea allow the fob to dry completely before putting in a brand new battery.

If your key fob isn't working even after replacing the battery and changing the program, you could have a problem with the receiver module. Reprogramming instructions are available for most remote key fobs on YouTube or in the owner's manual. You could also try resetting the car's computer onboard using the OBDII scan tool.

Faulty Receiver Module

The key fob is equipped with an electronic chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car when it is damaged. A key fob falling off can cause this, as can water exposure. If the key fob you have purchased has stopped functioning due to exposure to water it is possible fix the issue if you clean the chip using electronic cleaner or isopropylethanol.

However, if the key fob still does not respond even after cleaning it you can be sure that the receiver module is not functioning properly and needs to be replaced. A damaged receiver can cause the key to cease to function. This is usually due to electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob plays an important role in the anti-theft system in your car. It sends a signal the immobiliser unit in your vehicle to tell it whether the key is genuine. The car won't start in the event that the chip has been damaged.

A faulty chip can also be caused by interference signals from objects such as weather conditions, objects or transmitters operating on the same frequency as your vehicle. In this situation you'll need an entirely new key fob.

Contacts to the battery are not working properly.

The battery contacts on the key fob are fragile and are susceptible to damage with hard usage. If they're bent or broken the fob won't send any signals to the receiver modules in the car.

Modern fobs are made with rubber seals to keep out water. A splash of water or a light rain should be fine however, submerging them in saltwater may damage the electronic chip.

The key fob has the chip that connects to the vehicle's immobilizer to allow it to allow it to start. The system uses the old red keys for older vehicles, or the cryptocoding system that is used in modern vehicles. If the chip is defective and needs to be replaced.

Poor 12 Volt Battery

A damaged battery can cause the key fob to stop working. When this happens, the car's computer system cannot recognize that the remote is within the vehicle.

Before replacing the battery, test it with an voltmeter to gauge its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly it is time to replace the battery.

To test the battery's power test the battery's capacity by placing an electrical load on it for a few minutes. This will eliminate one percent of the surface charges. Then, test the voltage once more. The higher the capacity of the battery is, the longer it will maintain its voltage. Ideal is to hold at or near 12 volts for several minutes.

Faulty Radio Signal

This is the most typical reason behind a key fob that ceases to send signals to the car. The battery can be replaced to fix this problem. It is important to buy a battery with the same voltage and dimensions as the original.

Fobs aren't indestructible and can take a lot. The battery buttons and contacts are brittle which means they could be bent or damaged by excessive use.

A signal may also be interrupted by other transmitters or objects who use the same frequency. A light-control panel at your home, for instance, may interfere with key fobs that use the same bandwidth. This could affect the remote control in your car.

Problems with OBDII Scan Tool

There are a variety of reasons why scanners may not function. Some are more complex than others.

Professional scan tools enable mechanics to monitor the car's network, and run various self-tests. These tools can save you a lot of time, but they're expensive and not accessible to the majority of DIYers.

If your OBD2 scan tool isn't turning on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If these are both present it's possible that a fuse is blowing. This is the most typical reason for failures of the scanner. It is often easy to fix the problem by replacing the fuse blowing up.