Why No One Cares About Fiat 500 Keys
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fiat spare key Panda keyfobs are equipped with a transponder that sends an electronic signal from the fob to the car that allows it to unlock doors or turn on the motor. However, the fob can be inoperable due to various reasons.
The most commonly cited reason for key fob malfunction is a dead coin battery. Other reasons include water damage, the receiver module is defective and signal interference.
Dead Coin Battery
Replace the battery in case your key fob is dead. Use a brand new button battery that has the same voltage, size 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 before using again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner will be the solution.
If the key fob doesn't working even though it is not exposed to water, it could be due to a malfunction in the receiver module or an internal electronic chip. Reprogramming the keyfob by using an OBDII scan can help in these cases.
Water Damage
There could be water damage to your key fob if it was submerged in a pool, puddle or washing machine. It's generally possible to get it working by taking the batteries off and cleaning the circuit board using rubbing alcohol. It's a good idea allow the fob to dry completely before installing a new battery.
It could be that you have a defective module in the event that your key fob stops working after replacing the battery or reprogramming. There are reprogramming guidelines for all vehicles' remote key fobs on YouTube or in the owner's manual. You can also reset the computer of your vehicle using the OBDII scanner tool.
Faulty Receiver Module
The key fob's chip is an electronic chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car if damaged. The key fob being dropped can result in this, as can water exposure. If the key fob you have purchased has stopped functioning due to water exposure it is possible to fix it if clean the chip using electronic cleaner or isopropylethanol.
If the key fob does not respond to cleaning, it's possible that the receiver module has an issue and must be replaced. A defective receiver module could also cause the remote control key to stop functioning. This is usually caused by electromagnetic interference.
Faulty Electronic Chip
The chip that is embedded in your key fob is an important component of the anti-theft systems in your car. It sends a message to the immobiliser in your car to determine whether the key is genuine. The car won't start when the chip is damaged.
A malfunctioning chip can be caused by interference from other objects, bad weather or transmitters near your vehicle. In this case you'll need an entirely new key fob.
Contacts of the battery may be damaged.
The battery contacts on the fob's battery can be damaged by heavy usage. If they're bent, or broken, the fob won't send any signals to the receiver modules in the vehicle.
Modern fobs come with rubber seals to keep out water. Immersing them in water, even if just small splash or drizzle can harm the chip's electronic components.
The key fob houses a chip that communicates with the vehicle's immobilizer to allow it to begin it. The system uses the red keys of older vehicles or the cryptocoding system used in the latest vehicles. The chip must be changed if it is faulty.
Faulty 12 Volt Battery
A faulty battery may cause the key fob to work. When this happens the car's computer cannot recognize that the remote is in the vehicle.
Test the battery using an voltmeter prior to replacing it to determine its capacity. A fully charged battery should display 12.6 volts. If the reading drops significantly, it is time to replace the battery.
Put an electrical load for a few moments on the battery to check its capacity. This will remove approximately 1 percent of the surface charge. Then, test the voltage once more. The longer the battery is able to hold its voltage and the higher its capacity. The ideal scenario is to keep it at or near 12 volts for several minutes.
The radio signal is not working properly. Radio Signal
This is the most frequent reason for a keyfob that stops sending signals to the car. This issue can be fixed by replacing the battery. However, it is important to choose a battery that is the same voltage and size as the original.
Fobs endure a lot of punishment, and aren't indestructible. The battery buttons and the contacts are fragile, so they can get bent or damaged by rough use.
Other transmitters or objects using the same frequency can also disrupt the signal. A light-control panel at your home, for instance can interfere with key fobs that use the same bandwidth. This could affect the remote control of your car.
Problems with OBDII Scan Tool
There are many reasons why a scanner tool may not perform. Some are more complex than others.
Professional scan tools permit mechanics to monitor the car's network and run a variety of self-tests. They can be huge time savers, however they are also extremely expensive and are out of the reach of most DIYers.
If your OBD2 scan tool won't power on, check voltage at the terminals 16 (scantool power) and 4 (chassis earth). If all is fine there is a chance that a fuse has been blown. This is one of the most frequent causes of failures in the scan tool. The easiest fix is to replace the fuse which has blown.