Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain an transponder chip that transmits signals to your car to open the doors or start the engine. However, the fob could be inoperable due to various reasons.
The most common reason for key fob malfunction is the battery of the coin is dead. Other reasons include water damage, an inoperative receiver module and signal interference.
Dead Coin Battery
Replace the battery if your key fob has failed. Make use of a new button battery that is identical in size, voltage and specification like the previous one.
If the key fob has been exposed to water, such as a splash of rain or salt water at the beach, it's going to need to be cleaned before it can be used again. The best way to do this is using the paper towel and soak it in isopropyl or electronic cleaner.
If the key fob has not been exposed to water but remains inoperable it could be an issue with the receiver module or an internal electronic chip. In these cases, reprogramming the key fob using an OBDII scanner may help.
Water Damage
It is possible to get water damage to your key fob if it was submerged in a pool, puddle or washing machine. It is usually possible to get it working again by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It is a good idea to allow the fob to dry completely before putting in a new battery.
It could be that you have a defective module if your key fob stops working after replacing the battery or replacing it with. There are instructions for changing the programming of most remote keys on YouTube, or consult the owner's manual. You can also try resetting the car's computer onboard using the OBDII scan tool.
Faulty Receiver Module
The key fob is equipped with a chip which communicates with the vehicle's system. If this chip becomes damaged, it will be unable to longer be able to send or receive signals to the vehicle. Dropping the key fob could cause this, as well as water exposure. If your key fob has stopped working due to exposure to water or water exposure, you might be able to fix it by attempting to clean the chip using electronic cleaner or isopropylethanol.
If the key fob won't respond to cleaning, it's likely that the module is in issues and needs to be replaced. A faulty receiver module can also cause the remote control key to cease functioning. This is usually caused by electromagnetic interference.
Electronic chip that is malfunctioning
The chip that is embedded in your key fob is an important part of the anti-theft system in your car. It sends a signal the immobiliser unit of your car to inform it whether the key is legitimate. If the chip is damaged or broken, your car will not start.
A faulty chip can also be caused by interference signals from other objects such as weather conditions, objects or transmitters on the same frequency as your car. In this case it is likely that a new fob would be required.
Faulty Battery Contacts
The battery contacts on the fob's battery can be damaged by excessive usage. If they're bent, or damaged, the fob will not send any signals to receiver modules in the vehicle.
Modern fobs are made with rubber seals to keep out water. In the event of submerging them in water, even if it's only small splash or drizzle could harm the chip's electronic circuit.
The key fob has an electronic chip that communicates with the vehicle's immobilizer system in order to allow it to start. This system utilizes cryptocoding systems in the latest vehicles, or the old red key system for older ones. If this chip is faulty and needs to be replaced.
fiat 500 key fob with 12 Volt Batteries
A malfunctioning battery could cause the remote to cease working. When this happens the car's computer will not be able to recognize that the remote is in the vehicle.
Before you replace the battery, you should test it with a a voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading decreases significantly the time is now to replace it.
Install an electrical charge for a short time on the battery to test its capacity. This will take away about 1 percent of the charge on the surface. Then, test the voltage once more. The longer a battery can keep its voltage steady and the higher its capacity. The ideal scenario is to keep it close to 12 volts for several minutes.
Problems with Radio Signal
This is the most common reason behind a key fob that ceases to send signals to the car. The battery is able to be replaced to resolve this problem. It is however important to choose a battery that is the same size and voltage as the original.
Fobs are not indestructible and can be damaged by a lot. Contacts and buttons on batteries can be damaged by rough handling.
A signal may also be disrupted by other objects or transmitters that use the same frequency. For instance, a light control panel near your home may transmit interference using the same frequency as key fobs utilize. This could interfere with the remote control in your car.
Afflicted OBDII Scan Tool
There are a number of reasons why a scanner could not work. Some are more complicated than others.
Professional scan tools let mechanics to monitor the car's network and run various self-tests. These can be real time savers but they can be expensive, out of the budget of most DIYers.
If your OBD2 scan tool fails to turn on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If all is fine it could be that a fuse has blown. This is the most typical reason for a scan tool to fail. It is generally easy to fix the issue by replacing the fuse blowing up.