20 Truths About Fiat 500 Keys: Busted
Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder, which sends a signal from the fob to the car to open doors or turn on the motor. However, the fob could stop working due to a variety of causes.
A dead coin battery is the most common reason for the malfunction of a key fob. Other causes include water damage malfunctioning receiver modules and signal interference.
Dead Coin Battery
Replace the battery if the key fob has died. Choose a new button battery that is the same voltage, size, and specification as the original.
If the key fob has been exposed to water, like 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 solution is to use the paper towel and soak it in isopropyl or an electronic cleaner.
If the key fob isn't working despite not being exposed water, it could be due a malfunction in the receiver module or internal electronic chip. In these situations it is possible to re-programme the key fob using an OBDII scanner might assist.
Water Damage
There could be water damage if your key fob was submerged in a puddle, pool or washing machine. It's usually possible to get it working again by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's best to let the board completely dry prior to installing a battery.
There could be a problem with the module if your key fob stops working after replacing the battery or reprogramming. You can find information on reprogramming most vehicles' remote keys on YouTube or refer to the owner's manual. You could also try resetting the car's computer onboard using the OBDII scan tool.
Faulty Receiver Module
The key fob has a chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car when it is damaged. This can be caused by dropping the key fob or through exposure to water. If your key fob has stopped working due to exposure to water and you are unable fix the issue if you clean the chip with electronic cleaner or isopropylethanol.
However, if the key fob does not respond after cleaning it then it is likely that the component is damaged and must be replaced. A faulty receiver module can also cause the remote control key to stop functioning. This is usually due to electromagnetic interference.
Faulty Electronic Chip
The chip that is embedded in your key fob is a vital component of the anti-theft systems in your car. It transmits a message the immobiliser inside your car to determine that the key is valid. If the chip is damaged or broken, your vehicle won't start.
A defective chip could be caused by interference from objects, bad weather or transmitters in the vicinity of your vehicle. In this scenario the replacement fob will be needed.
Contacts for the battery that are damaged
The battery contacts of a key fob are very delicate and could be damaged through repeated use. If they are broken or bent, the fob will not send any signals to the receiver modules inside the car.
Modern fobs have rubber seals to keep out water. Immersing them in water, even if it's just an occasional drizzle or splash could harm the chip's electronic circuit.
The key fob has chips that communicate with the vehicle's immobilizer system to activate it. This system makes use of cryptocoding systems in newer vehicles or the red key system in older ones. This chip will need to be changed if it is faulty.
Poor 12 Volt Battery
A damaged battery can cause the remote to stop working. When this occurs the car's computer won't recognize that the remote is within the vehicle.
Before you replace the battery, test it with an voltmeter for determining its capacity. A fully charged battery should display 12.6 volts. If the reading drops dramatically the time is now to replace it.
To test a battery's capacity to determine its capacity, put an electric load on it for a couple of minutes. This will remove 1percent of the surface charges. Then, measure the voltage once more. The longer a battery is able to keep its voltage steady more effectively, the greater its capacity. The ideal scenario is to keep it at 12 volts or less for several minutes.
Faulty Radio Signal
This is the main cause of a key fob that ceases to send signals to the car. This issue can be resolved by replacing the battery. It is however important to select a replacement battery that has the same size and voltage as the original.
Fobs aren't impervious to damage and are susceptible to damage. Contacts on batteries and buttons can be damaged by rough handling.
Other transmitters or objects that use the same frequency could also interfere with the signal. For example, a light-control panel that is near your home could transmit interference on the same frequency that key fobs utilize. This can interfere with the remote control of your car.
Incorrect OBDII scan tool
There are a variety of reasons why a scanner tool may not function. Some are more complex than others.
Professional scan tools let a mechanic observe the car's network and run various self-tests. These are great time savers, however they can also be very expensive, out of the reach of most DIYers.
If your OBD2 scan tool won't power on, check voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they are all OK the fuse could have blown. This is the most common reason for failure of the scan tool. replacement fiat 500 key is usually easy to fix the issue by replacing the blown fuse.