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What You Can Do To Get More Out Of Your Fiat 500 Keys
fiat ducato key replacement are equipped with a transponder that sends an electronic signal from the fob to the car to open doors or start the motor. The fob can stop functioning due to a variety reasons.

The most common reason for key fob failure is a dead coin battery. Other causes include water damage as well as a defective module and interference signals.

Dead Coin Battery

Replace the battery if your key fob has failed. Choose a button battery that has the same voltage, size and specifications as the old one.

If the key fob was exposed to water (such as rain or saltwater at the beach) it must be cleaned before being used again. The best solution is to use an old towel soaked in isopropyl or an electronic cleaner.

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

Water Damage

There could be water damage if your key fob was submerged in a puddle, pool or washing machine. It is usually possible to get it back to working by removing the battery and scrubbing the circuit board with isopropyl alcohol. It is best to let the circuit board completely dry before installing a battery.

You may have a faulty module if your key fob stops working after replacing the battery or changing the programming. There are instructions for reprogramming most vehicles' remote keys on YouTube or consult the owner's manual. You can also reset the computer in your car with the OBDII scanner tool.

Faulty Receiver Module

The key fob contains a chip which communicates with the vehicle's system. The chip will stop sending and receiving signals to the car when it is damaged. This can be caused by dropping the key fob or by exposure to water. If the key fob is not working after exposure to water, it may be possible to fix the issue by cleaning the chip using isopropyl alcohol or an electronic cleaner.

However, if the key fob is still unable to not respond even after cleaning it you can be sure that the receiver module is not functioning properly and will require to be replaced. A defective receiver module could also cause the remote control key to stop functioning. This is usually due to electromagnetic interference.

Faulty Electronic Chip

The electronic chip in your key fob is a vital element of the anti-theft device in your car. It sends a signal to the immobiliser inside your car to determine whether the key is genuine. If the chip is damaged or broken, the car won't start.

A defective chip could be caused by interference from objects, bad weather or transmitters in the vicinity of your vehicle. In this instance you'll require a new key fob.


Contacts of the battery may be damaged.

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

Modern fobs come with rubber seals to keep out water. Submerging them in water even if just an occasional drizzle or splash could damage the chip's electronic circuit.

The key fob is equipped with chip that communicates with the immobilizer system of the vehicle in order to start it. This system makes use of cryptocoding systems in the latest vehicles and the older red key system in older ones. If the chip is damaged it must be replaced.

The 12 Volt Battery is faulty

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

Before replacing the battery, test it with a voltmeter to determine its capacity. A fully charged battery will read 12.6 volts. If the reading decreases significantly it's time to change it.

Place an electrical load for a few seconds on the battery to gauge its capacity. This will take away approximately 1 percent of the surface charge. After that, measure the voltage. The longer the battery is able to keep its voltage steady greater is its capacity. Ideally, it should remain close to 12 volts several minutes.

The radio signal is not working properly. Radio Signal

This is the most common cause of a key fob that stops sending signals to the car. This issue can be resolved by replacing the battery. It is crucial to purchase batteries that have the same dimensions and voltage as the original.

The buttons are not impervious to destruction and can be damaged by a lot. Contacts on batteries and buttons can be damaged by rough handling.

The signal could also be affected by other objects or transmitters that use the same frequency. For instance, a light control panel that is near your home could transmit interference using the same frequency that key fobs utilize. This can interfere with the remote control in your car.

Incorrect OBDII scan tool

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

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

If your OBD2 scan tool won't power on, check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they're all fine it could be that a fuse has blown. This is among the most common causes of failures in the scan tool. It is generally easy to fix the problem by replacing the blown fuse.

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