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Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain an transponder chip that transmits a signal to your car to unlock the doors or start the engine. The fob might stop working due to a variety reasons.
The most common cause of key fob failure is an inoperable coin battery. Other causes include water damages, a faulty module, and interference signals.
Dead Coin Battery
Replace the battery if the key fob has failed. Choose a button battery with the same voltage, size and specification as your old 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 alcohol or electronic cleaner can work wonders.
If the key fob is not working despite not being exposed to water, it could be due a malfunction in the receiver module or in the internal electronic chip. In these situations it is possible to re-programme the key fob using an OBDII scanner may help.
Water Damage
You could have water damage if your key fob was submerged in a puddle, pool or washing machine. It's generally possible to repair it by removing the batteries and cleaning the circuit board using rubbing alcohol. It's a good idea let the fob dry completely prior to installing a new battery.
If your key fob isn't working, even after replacing the battery and programming it again, you might have a malfunctioning receiver module. There are reprogramming guidelines for the majority of vehicles' remote key fobs on YouTube or in your owner's guide. You can also try resetting the car's onboard computer by using the OBDII scan tool.
Faulty Receiver Module
The key fob contains a chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. Dropping the key fob can cause this, as well as exposure to water. If your key fob stopped working due to water exposure or water exposure, you might be able to fix it if you clean the chip with electronic cleaner or isopropyl alcohol.
If the key fob still does not respond after cleaning it, then it is likely that the module is faulty and will require to be replaced. A defective receiver can cause the key to not work. This is usually due to electromagnetic interference.
Faulty electronic chip
The electronic chip inside the key fob is an important component of the anti-theft system in your car. It sends a signal to the immobiliser inside your car that tells it whether the key is legitimate. The car will not start in the event that the chip is damaged.
A faulty chip can also be caused by interference signals from other objects like bad weather conditions or transmitters on the same frequency near your vehicle. In this situation the replacement fob will be needed.
Contacts for the battery that are defective
The battery contacts on the fob's battery can be damaged through heavy use. If they are damaged or bent, the fob will not be able to send any signals to the receiver modules inside the car.
Modern fobs feature rubber seals that keep out water. Immersing them in water, even if it's just an occasional drizzle or splash could damage the chip's electronic circuit.
The key fob has the chip that connects to the vehicle's immobilizer system to start it. The system is based on the old red keys that were used in older vehicles, or the cryptocoding system that is used in newer vehicles. If the chip is defective, it will need to be replaced.
A faulty 12 Volt battery
A malfunctioning battery could cause the remote to cease to function. The car's computer won't recognize the remote when this happens.
Before you replace the battery, test it by using a an voltmeter for determining its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly the time is now to replace it.
Install an electrical charge for a few moments on the battery to gauge its capacity. replacement fiat key will take away approximately 1 percent of the surface charge. Then, measure the voltage again. The better the battery's capacity is, the longer it will maintain its voltage. Ideal is that it stays close to 12 volts over several minutes.
Faulty Radio Signal
This is the main reason for keys not sending signals to cars. The battery can be replaced to solve this problem. It is however important to choose a battery that is the same voltage and size as the original.
Fobs aren't impervious to damage and are susceptible to damage. The battery buttons and contacts are brittle which means they could be bent or damaged by the force of.
A signal can also be disrupted by other objects or transmitters who use the same frequency. For instance, a light control panel close to your home can send interference on the same bandwidth that key fobs utilize. This can interfere with the remote control of your car.
Incorrect OBDII Scan Tool
There are a number of reasons why a scan tool might not work. Certain are more complicated than others.
Professional scan tools allow a mechanic to examine the car's systems and conduct a variety self-tests. These are great time savers but they are also extremely expensive, out of the budget of many DIYers.
If your OBD2 scan tool doesn't turn on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If they're all fine, a fuse may have failed. This is among the most common causes of a scan tool failing. The easiest fix is to replace the fuse which has blown.