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fiat 500 stolen without keys Panda keyfobs are equipped with a transponder which transmits signals from the fob to the car to unlock doors or start the motor. The fob might stop working for a variety of reasons.

A dead coin battery is the most frequent cause of key fob malfunctions. Other causes include water damage or a malfunctioning module and interference signals.

Dead Coin Battery

If your key fob's battery has died, the first thing to do is replace it. Use a brand new button battery that has exactly the same size, voltage and specification as the old one.

If the key fob was exposed to water, like a splash of rain or salt water on the beach, it will need to be cleaned before it can be used again. The best method is to use an old towel soaked in isopropyl, or electronic cleaner.

If the key fob hasn't been exposed to water but it is still not working it could be a problem with the receiver module or an internal electronic chip. In these instances, reprogramming the spare key for fiat 500 fob using an OBDII scanner might help.

Water Damage

If your key fob has taken a bath in the pool or puddle, or taken a trip down the washing machine, you could be suffering some water damage. It's possible to get it back in working order by taking the batteries off and cleaning the circuit board with ruby alcohol. It's a good idea let the fob dry completely before putting in a brand new battery.

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

Faulty Receiver Module

The key fob's chip is a chip that communicates with the car's system. This chip will stop sending and receiving signals to the car if it becomes damaged. This can be caused by dropping the key fob or by exposure to water. If the key fob you have purchased has stopped working due to water exposure and you are unable fix the issue if you clean the chip using electronic cleaner or isopropylethanol.

If the fiat ducato key replacement fob won't respond to cleaning, it is likely that the module is in an issue and should be replaced. A defective receiver can cause the key to not work. This is usually due to electromagnetic interference.

A malfunctioning electronic chip

The electronic chip inside the key fob is an essential component of the anti-theft systems in your car. It sends a signal to the immobiliser unit in the vehicle to determine whether or not the key is legitimate. If the chip is damaged or broken, the car will not start.

A faulty chip can also be caused by interference signals from objects such as weather conditions, objects or transmitters operating on the same frequency in close proximity to your car. In this instance an upgrade to the fob will be needed.

Contacts of the battery may be damaged.

The battery contacts of the key fob are fragile and are susceptible to damage through repeated use. If they are bent, or damaged, the fob will not transmit any signals to receiver modules inside the vehicle.

Modern fobs come with rubber seals that block out water. A splash of water or light rain is fine but submerging them into saltwater can damage the chip's electronic components.

The key fob comes with chip that communicates with the immobilizer system of the vehicle in order to start it. This system uses crypto coding systems in vehicles that are more modern, or the old red key system for older models. This chip will have to be replaced if defective.

Problems with 12 Volt Batteries

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

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

To determine the capacity of a battery test the battery's capacity by placing an electrical load on it for a few minutes. This will eliminate 1percent of the charges. Then, test the voltage once more. The higher the capacity of the battery and the longer it can maintain its voltage. Ideally, it will remain close to 12 volts for several minutes.

The radio signal is not working properly. Radio Signal

This is the main reason for the key fob not sending signals to a car. The battery is able to be replaced to resolve this problem. It is crucial to buy an identical battery voltage and dimensions as the original.

Fobs aren't indestructible and can take a lot. The battery contacts and buttons could be damaged through rough handling.

Other transmitters or objects using the same frequency may also disrupt a signal. A light-control system in your home, for instance can interfere with key fobs that use the same bandwidth. This can interfere with the remote control of your car.

Afflicted OBDII Scan Tool

There are a variety of reasons why scanner tools may not perform. Some are more complex than others.

Professional scan tools permit mechanics to examine the car's systems and conduct a variety self-tests. These tools can help save time, but they are costly and out of reach for the majority of DIYers.

If your OBD2 scan tool doesn't turn on, check voltage at terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition it's possible that a fuse has been blown. This is the most frequent cause of scan tool failure. It is generally easy to fix the problem by replacing the fuse that has blown.