Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder, which sends a signal from the fob to the car to unlock doors or turn on the motor. However, the fob can not function due to a variety of reasons.
A dead battery for the coin is the most frequent cause of malfunctioning keys. Other causes are water damage as well as a defective module and interference signals.
Dead Coin Battery
Replace the battery in case your key fob has died. Use a new button cell battery with exactly the same size, voltage and specification as the original.
If the key fob was exposed to water (such as rain or saltwater at the beach) it should be cleaned before using again. The best method is to use an old towel soaked in isopropyl, or electronic cleaner.
If the key fob isn't working despite being not exposed to water, it could be due a malfunction in the receiver module or in the internal electronic chip. Reprogramming the keyfob through an OBDII scan may assist in these situations.
Water Damage
If your key fob has taken a bath in the puddle or pool or walked to the washing machine, you may have some water damage. It's generally possible to fix it by removing the batteries and cleaning the circuit board with rubbing alcohol. It is best to allow the device to completely dry before installing the battery.
It could be that you have a defective module in the event that your remote stops working after replacing the battery or replacing it with. You can find reprogramming procedures for most vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset the computer of your vehicle using the OBDII scanner tool.
Faulty Receiver Module
The key fob is equipped with a chip which communicates with the vehicle's system. This chip will stop sending and receiving signals to the car if damaged. This could be due to dropping the key fob or due to exposure to water. If the key fob is not working after exposure to water it is possible to fix the issue by cleaning the chip using isopropyl alcohol, or electronic cleaner.
If the key fob doesn't respond to cleaning, it's possible that the module has issues and needs to be replaced. A damaged receiver module may also cause the remote control key to not function. This is usually caused by electromagnetic interference.
Faulty Electronic Chip
The chip that is embedded in your key fob is a crucial element of the anti-theft device in your vehicle. It transmits a message to the immobiliser inside your car to determine that the key is valid. The car won't start in the event that the chip is damaged.
A faulty chip can also be caused by interference signals from other objects such as weather conditions, objects or transmitters on the same frequency close to your car. In this scenario you'll require a new key fob.
Contacts to the battery are not working properly.
The battery contacts on the key fob are delicate and can get damaged with hard usage. If spare key fiat 500 are damaged or bent, the fob will not transmit any signals to the receiver modules in the car.
Modern fobs feature rubber seals that keep out water. Submerging them in water even if it is just the slightest splash or drizzle could damage the chip's electronic circuit.
The key fob is equipped with an electronic chip that communicates with the vehicle's immobilizer system in order to begin it. The system utilizes the old red keys for older vehicles, or the cryptocoding system used in the latest vehicles. The chip must be replaced if it's faulty.
Faulty 12 Volt Batterie
A malfunctioning battery could cause the key fob to function. The car's system will not recognize the remote when this happens.
Before you replace the battery, you should test it with a the voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops dramatically the time is now to replace it.
Install an electrical charge for a short time on the battery to check its capacity. This will remove 1percent of the surface charges. After that, take the voltage again. The longer a battery is able to keep its voltage steady greater is its capacity. Ideal is to hold close to 12 volts over several minutes.
Problems with Radio Signal
This is the most common cause of a key fob that stops sending signals to the car. The issue can be fixed by replacing the battery. It is essential to purchase a battery with the same voltage and dimensions as the original.
Fobs are not indestructible and can withstand a lot. Battery contacts and buttons can be damaged by rough handling.
Other transmitters or objects operating on the same frequency could also disrupt a signal. A light-control panel at your home, for example can interfere with key fobs that have the same frequency. This can interfere with your car's remote control.
Problems with OBDII Scan Tool
There are a number of reasons why a scan tool might not work. Some are more complex than others.
Professional scan tools let a mechanic observe the car's network, and run various self-tests. These can be real time savers, but they are also extremely expensive, and out of the budget of many DIYers.
If your OBD2 scanner isn't turning on examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are both present it's likely that a fuse has been blown. This is among the most frequent reasons for failure of the scanner. The simple fix is usually to replace the fuse that is blowing up.