Don't Make This Silly Mistake With Your Fiat 500 Keys
Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder that sends signals from the fob to the car that allows it to unlock doors or start the motor. However, the fob can be inoperable due to various reasons.
The most common reason for key fob malfunction is an inoperable coin battery. Other reasons include water damage, malfunctioning receiver modules, and signal interference.
Dead Coin Battery
If the battery in your key fob has died, the first thing to do is replace it. Use a button cell with the same voltage, size, and specification as your old one.
If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it needs to be cleaned before it is able to be used again. The trick is to use an old towel soaked in isopropyl or electronic cleaner.
If the key fob isn't working even though it is not exposed to water, it could be due to a glitch in the receiver module or in the internal electronic chip. In these cases you can reprogramme the key fob with an OBDII scanner can assist.
Water Damage
If your key fob's battery has taken an immersion in the pool or puddle or gone to the washing machine, you may have some water damage. It's possible to get it back in working order by getting rid of the batteries and cleaning the circuit board with ruby alcohol. It's best to allow the device to completely dry prior to installing batteries.
It could be that you have a defective module if your key fob stops working after replacing the battery or replacing it with. You can find the instructions for reprograming the majority of remote keys on YouTube or consult the owner's manual. You can also reset the car's computer using the OBDII scanner tool.
Faulty Receiver Module
The key fob has the chip that communicates with the car's system. If this chip becomes damaged, it cannot longer send and receive signals to the vehicle. Dropping the key fob could cause this, as could water exposure. If the key fob has stopped working after exposure to water, it is possible to fix the issue by cleaning the chip with isopropyl alcohol or an electronic cleaner.
However, if the key fob is still unable to not respond after cleaning it, it is likely that the module is defective and will need to be replaced. A faulty receiver module can also cause the remote control key to cease functioning. This is usually caused by electromagnetic interference.
A defective electronic chip
The electronic chip in your key fob plays a crucial role in the anti-theft security system of your vehicle. It transmits a signal to the immobiliser device in your car to determine whether the key is in fact valid. If the chip is damaged or broken, your vehicle will not start.
A damaged chip could be caused by interference caused by objects, bad weather or transmitters close to your vehicle. In this situation it is likely that a new fob would be needed.
Faulty Battery Contacts
The battery contacts of the key fob are delicate and can get damaged when used for long periods of time. If they're bent or broken, the fob won't 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 However, submerging them in saltwater may damage the chip's electronic components.
The key fob contains a chip which communicates with the immobilizer system of the vehicle in order to start it. It uses the red keys of older vehicles as well as the cryptocoding system found in the latest vehicles. The chip must be changed if it is malfunctioning.
The 12 Volt Battery is faulty
A malfunctioning battery could cause the key fob to function. The car's computer may not recognize the remote if this happens.
Before you replace the battery, test it by using a the voltmeter to determine its capacity. A fully charged battery will display 12.6 volts. If the reading decreases significantly the time is now to replace it.
To test a battery's capacity, place an electrical load on it for a couple of minutes. This will eliminate approximately 1 percent of the surface charge. Then take another measurement of the voltage. The longer the battery is able to hold its voltage, the better its capacity. It should be close to 12 volts for several minutes.
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This is the main cause of a key fob that stops sending signals to the car. This issue can be resolved by replacing the battery. But, it is essential to select a replacement battery that has the same voltage and size as the original.
Fobs are subject to a lot of punishment, and aren't indestructible. Contacts on batteries and buttons can be damaged through rough handling.
Other transmitters or objects using the same frequency can also interfere with the signal. A light-control system in your home, for example could interfere with key fobs that use the same frequency. This could affect the remote control of your car.
Faulty OBDII Scan Tool
There are many reasons why a scan tool may not work. Some are more complex than others.
Professional scan tools let mechanics to monitor the car's network and perform various self-tests. These tools can save a lot of time, but are expensive and out of reach for the majority of DIYers.
If your OBD2 scanner isn't turning on Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they are all OK it could be that a fuse has failed. This is the main reason for failure of the scan tool. It is typically easy to fix the problem by replacing the fuse that has blown.