Fiat 500 Keys: A Simple Definition
fiat punto car key Panda Key Fob Replacement
fiat a602 Key Panda fiat 500 spare key cut fobs contain a transponder chip which sends a signal to your car to open the doors or start the engine. The fob can stop functioning for a variety.
The most frequent cause of key fob malfunction is a dead coin battery. Other causes include water damages or a malfunctioning module and interference signals.
Dead Coin Battery
If your key fob's battery has gone out of service, the first step is to replace it. Choose a button battery with the same voltage, size and specifications as your previous one.
If the key fob was exposed to water, like a splash of rain or salt water at the beach, it's going to 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 doesn't working even though it is not exposed to water it could be due a malfunction in the receiver module or an internal electronic chip. In these instances it is possible that reprogramming the key fob using an OBDII scanner can aid.
Water Damage
You could have water damage if your key fob was submerged in a puddle, pool or washing machine. It's possible to get it working by getting rid of the batteries and cleaning the circuit board with ruby alcohol. It is best to let the fob completely dry before installing batteries.
You may have a faulty module in the event that your key fob stops working after replacing the battery or reprogramming. 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 in your car with the OBDII scanner tool.
Faulty Receiver Module
The key fob contains the chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car if damaged. A key fob falling off can result in this, as can water exposure. If your key fob isn't working due to water exposure and you are unable to fix it if clean the chip using electronic cleaner or isopropyl alcohol.
However, if the key fob continues to not respond after cleaning it then it is likely that the module is defective and must be replaced. A faulty receiver can also cause the key to cease to function. This is often caused by electromagnetic interference.
Faulty Electronic Chip
The electronic chip in your key fob is a vital function in the anti-theft security system in your car. It transmits a message the immobiliser inside your car that tells it if the key is valid. The car will not start in the event that the chip has been damaged.
A malfunctioning chip could be caused by interference signals from objects, bad weather conditions or transmitters on the same frequency as your vehicle. In this instance you'll require an entirely new fiat 500 key key fob.
Contacts for the battery that are defective
The battery contacts on the key fob are delicate and can get damaged with hard 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 to keep out water. Submerging them in water even if just a light drizzle or splash can harm the chip's electronic components.
The key fob houses a chip that communicates with the vehicle's immobilizer system in order to activate it. The system relies on cryptocoding systems in modern vehicles or the red key system in older ones. This chip will need to be replaced if it's defective.
Problems with 12 Volt Batteries
A defective battery can cause the remote to cease working. If this happens, the car's computer system will not be able to recognize that the remote is inside the vehicle.
Before replacing the battery, test it with an voltmeter to gauge its capacity. A fully charged battery should display 12.6 volts. If the reading falls dramatically it is time to replace the battery.
To determine the capacity of a battery put an electrical load on it for a few minutes. This will remove about 1% of the surface charge. After that, take the voltage again. The longer the battery is able to keep its voltage steady more effectively, the greater its capacity. It is ideal to maintain close to 12 volts during several minutes.
Radio Signal Faulty Radio Signal
This is the most frequent reason for a keyfob that ceases to send signals to the car. The battery is able to be replaced to resolve this issue. However, it is crucial to buy a new battery that is the same size and voltage as the original.
Fobs can take a lot abuse, but they're also not impervious to destruction. The battery buttons and contacts are brittle, so they can get bent or broken with rough usage.
Other transmitters or objects operating on the same frequency can disrupt a signal. For example, a light-control panel in your home could send interference over the same frequency as key fobs utilize. This can affect the remote control of your car.
Faulty OBDII scan tool
There are a number of reasons why a scan tool may not work. Certain are more complicated than others.
Professional scan tools allow mechanics to examine the car's systems and perform a variety of self-tests. These tools can save a lot of time, but are expensive and are out of reach for the majority of DIYers.
If your OBD2 scan tool won't power on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If these are both present, it's likely that a fuse has been blown. This is the most frequent reason for failure of the scan tool. It is typically simple to fix the issue by replacing the fuse that has blown.
