Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder that sends a signal from the fob to the car that allows it to unlock doors or start the motor. The fob can stop functioning due to a variety of reasons.
The most common reason for key fob malfunction is a dead coin battery. Other causes include water damages, a faulty module, and interference signals.
Dead Coin Battery
Replace the battery if the key fob has died. Make use of a new button battery that has exactly the same size, voltage, and specification like the previous one.
If the key fob was exposed to water, like a splash of rain or salt water on the beach, it will need to be cleaned before it is able to be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can help.
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 an internal electronic chip. Reprogramming the keyfob by using an OBDII scan may help in these cases.
Water Damage
If your key fob has taken a bath in the pool or puddle or gone to the washing machine, it could have some water damage. It's possible to fix it by getting rid of the batteries and cleaning the circuit board with ruby alcohol. It is a good idea to allow the fob to dry completely before putting in a brand new battery.
If your key fob stopped working even after replacing the battery and reprogramming it, you may have a defective receiver module. Reprogramming instructions are available for most 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 contains an electronic chip that communicates with the vehicle's system. If the chip is damaged, it cannot longer transmit or receive signals to the vehicle. This can be caused by dropping the key fob, or by water exposure. If fiat 500 key fob fob isn't functioning due to exposure to water and you are unable to fix it by attempting to clean the chip using electronic cleaner or isopropyl ethanol.
If the key fob won't respond to cleaning, it is likely that the module is in a fault and needs to be replaced. A faulty receiver module can also cause the remote control key to cease functioning. This is typically caused by electromagnetic interference.
Faulty Electronic Chip
The chip inside your key fob plays a crucial role in the anti-theft security system of your vehicle. It sends a message to the immobiliser in your car that tells it if the key is valid. If the chip is damaged or broken, the car won't start.
A malfunctioning chip can be caused by interference from objects, bad weather or transmitters close to your vehicle. In this case the replacement fob will be required.
Faulty Battery Contacts
The battery contacts of the fob's key can be damaged by excessive usage. If they are broken or bent, the fob will not send any signals to the receiver modules in the car.
Modern fobs have rubber seals that keep out water. Immersing them in water, even if it's just small splash or drizzle could damage the chip's electronic components.
The key fob contains an electronic chip that communicates with the vehicle's immobilizer system to activate it. This system utilizes cryptocoding systems in newer vehicles and the older red key system for older ones. If the chip is not working properly, it will need to be replaced.
Faulty 12 Volt Battery
A damaged battery could cause the key fob not to work. The car's computer may not recognize the remote if this occurs.
Test the battery using a voltmeter before replacing it to determine its capacity. A fully charged battery should display 12.6 volts. If the reading decreases significantly, it is time to replace the battery.
To test the battery's capacity test the battery's capacity by placing an electrical load on it for a few minutes. This will eliminate about 1% of the surface charge. Then measure the voltage again. The better the battery's capacity, the longer it can maintain its voltage. Ideal is that it stays at or near 12 volts for several minutes.
Radio Signal Faulty Radio Signal
This is the most frequent reason for a keyfob that stops sending signals to the car. The battery can be replaced to fix this problem. It is however important to select a replacement battery that is the same size and voltage as the original one.
Fobs take a lot of abuse, and they aren't impervious to destruction. Battery contacts and buttons can be damaged through rough handling.
The signal could also be interrupted by other objects or transmitters that operate on the same frequency. A light-control panel in your home, for instance could interfere with key fobs using the same frequency. This could cause interference with the remote control of your car.
Incorrect OBDII Scan Tool
There are many reasons scanner tools may not function. 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 are great time savers, however they are also extremely expensive and are out of the range of most DIYers.
If your OBD2 scanner won't start make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're both in good shape, it's likely that a fuse has been blown. This is the most frequent cause of scan tool failure. The easiest fix is to replace the fuse that has been blown.