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fiat 500 Electric key Panda keyfobs are equipped with a transponder which transmits an electronic signal from the fob to the car in order to unlock doors or turn on the motor. The fob could stop working for a variety of reasons.

A dead battery for the coin is the most common cause of key fob malfunctions. Other causes include water damage a faulty receiver module, and signal interference.

Dead Coin Battery

Replace the battery if the key fob is dead. Choose a new button battery that has identical in size, voltage, and specification like 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 trick is to use an old towel soaked in isopropyl or electronic cleaner.

If the key fob hasn't been exposed to water, but isn't working, there may be a problem with the receiver module or an internal electronic chip. Reprogramming the keyfob using an OBDII scan may help in these instances.

Water Damage

There could be water damage to your key fob if it was submerged in a puddle, pool or washing machine. It is usually possible to get it back in working order by removing the batteries and cleaning the circuit board using ruby alcohol. It's a good idea to allow the fob to dry completely before installing a new battery.

There could be a problem with the module when your key fob ceases working after replacing the battery or updating. There are instructions for reprogramming most vehicles' remote keys on YouTube or refer to the owner's manual. You can also reset your computer of your car using the OBDII scanner tool.

Faulty Receiver Module

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

If the key fob doesn't respond to cleaning, it's possible that the component has a fault and needs to be replaced. A faulty receiver module can also cause the remote control key to cease functioning. This is usually due to electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob plays an important part in the anti-theft security system of your vehicle. It sends a signal to the immobiliser in your car to tell it that the key is valid. If the chip is damaged or broken, your car will not start.

A defective chip could be caused by interference caused by objects, bad weather or transmitters near your vehicle. In this scenario you'll require a new key fob.

Contacts for the battery that are defective

The battery contacts in a key fob are very delicate and could be damaged with hard usage. If they're bent or broken, the fob won't send any signals to receiver modules in the vehicle.

Modern fobs are made with rubber seals in order to keep out water. A splash of water or light rain should be fine However, submerging them in saltwater may harm the chip's electronic components.

The fiat ducato key fob fob houses the chip that connects to the vehicle's immobilizer to allow it to start it. It uses the old red keys that were used in older vehicles or the cryptocoding system found in newer vehicles. This chip will need to be changed if it is malfunctioning.

Problematic 12 Volt Battery

A defective 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 within the vehicle.

Before replacing the battery, test it using a the voltmeter to determine its capacity. A fully charged battery will display 12.6 volts. If the reading drops dramatically it's time to change it.

Place an electrical load for a short time on the battery to gauge its capacity. This will eliminate 1percent of the charges. After that, measure the voltage. The greater the battery's capacity, the longer it can maintain its voltage. It should be at 12 volts or less for several minutes.

Radio Signal Faulty Radio Signal

This is the most frequent reason for a fiat multipla key fob that ceases to send signals to the car. This problem can be solved by replacing the battery. However, it is important to purchase a battery that has the same size and voltage as the original one.

Fobs are not indestructible and can be damaged by a lot. Contacts and buttons on batteries can be damaged through rough handling.

Other transmitters or objects operating on the same frequency could also interfere with a signal. For instance, a light-control panel close to your home can transmit interference using the same frequency as key fobs utilize. This could interfere with the remote control of your car.

Incorrect OBDII Scan Tool

There are many reasons why a scanner might not work. Some are more complex than others.

Professional scan tools enable a mechanic observe the car's networks and run various self-tests. These tools can save a lot of time, but are costly and are out of reach for the majority of DIYers.

If your OBD2 scanner isn't turning on make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If all is fine there is a chance that a fuse has ruptured. This is one of the most common causes of scan tool failure. It is generally easy to fix the problem by replacing the fuse blowing up.