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fiat replacement car keys Panda key fobs contain a transponder chip which sends an alert to your car to open the doors or start the engine. However, the fob could stop working due to a variety of causes.

The most frequent cause of key fob malfunction is a dead coin battery. Other reasons include water damage, a faulty receiver module, and signal interference.

Dead Coin Battery

If the battery in your key fob has died, the first thing to do is replace it. Choose a button battery that has the same voltage, size, and specifications as the old one.

If the key fob has been exposed to water, such as a splash of rain or salt water on the beach, it will have to be cleaned before it is able to be used again. The best method is to use a paper towel soaked with isopropyl, or electronic cleaner.

If the key fob has not been exposed to water, but still does not work it could be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob using an OBDII scan can assist in these situations.

Water Damage

If your key fob has gotten immersed in a pool or puddle or walked down the wash machine, you might 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 is best to allow the device to completely dry before installing a battery.

You may have a faulty module in the event that your remote stops working after replacing the battery or replacing it with. There are instructions for the reprogramming of most remote keys on YouTube, or consult your owner's manual. You could also try resetting the car's computer onboard using the OBDII scan tool.

Faulty Receiver Module

The key fob contains the chip that communicates with the vehicle's system. If the chip is damaged, it will no longer transmit or receive signals to the vehicle. The key fob being dropped can cause this, as could water exposure. If the key fob has stopped working after exposure to water, it is possible to repair the issue by cleaning or cleaning the chip with isopropyl alcohol or electronic cleaner.

If the key fob is still unable to not respond after cleaning it, it is likely that the component is damaged and will need to be replaced. A faulty receiver module can also cause the remote control key to stop functioning. This is typically caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip in your key fob is a crucial component of the anti-theft system in your car. It transmits a signal to the immobiliser device in your vehicle to tell it whether the key is valid. The car won't start when the chip is damaged.

A malfunctioning chip could be caused by interference signals from other objects or weather conditions that are bad, or transmitters on the same frequency near your vehicle. In this instance the replacement fob will be required.

Contacts of the battery may be damaged.

The battery contacts inside a key fob are very delicate and may be damaged by repeated use. If they're bent, or damaged, the fob will not transmit any signals to receiver modules in the vehicle.

Modern fobs are equipped with rubber seals to keep out water. A splash of water or light rain is acceptable, but submerging them in saltwater can cause damage to the electronic chip.

The key fob comes with an electronic chip that communicates with the immobilizer system of the vehicle, allowing it to start it. The system utilizes the old red keys in older vehicles or the crypto coding system in newer vehicles. If the chip is not working properly it must be replaced.

A faulty 12 Volt battery

A malfunctioning battery could cause the remote to cease working. The car's computer may not recognize the remote if this happens.

Test the battery with the voltmeter before replacing it to determine its capacity. A fully charged battery should display 12.6 volts. If the reading falls significantly it's time to change it.

Install an electrical charge for a short time on the battery to check its capacity. This will remove one percent of the surface charges. Then take another measurement of the voltage. The longer a battery is able to keep its voltage steady and the higher its capacity. Ideal is to hold at or near 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the main reason for keys not sending signals to a car. The issue can be fixed by replacing the battery. It is however important to choose a battery that is the same voltage and size as the original one.

Fobs endure a lot of punishment, and aren't indestructible. The battery buttons and contacts are brittle and can be bent or damaged by excessive use.

A signal can also be impacted by other transmitters or objects that operate on the same frequency. For instance, a light-control panel close to your home can transmit interference using the same bandwidth that key fobs use. This can interfere with the remote control in your car.

Afflicted OBDII Scan Tool

There are many reasons why a scan tool could not work. Some are more complex than others.

Professional scan tools permit mechanics to monitor the car's network and run a variety of self-tests. These can be real time savers, however they're also expensive, and beyond the budget of many DIYers.

If your OBD2 scanner doesn't work make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are both present the chances are that a fuse has blown. This is among the most frequent reasons for failure of the scanner. It is generally simple to fix the issue by replacing the fuse that was blown.