Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder which transmits a signal from the fob to the car that allows it to unlock doors or start the motor. The fob could stop working for 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
If your key fob's battery has died, the first thing to do is replace it. Make use of a new button battery that has the same voltage, size and specification like the previous one.
If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned prior to being used again. A paper towel soaked in alcohol or electronic cleaner can do the trick.
If the key fob has not been exposed to water but still does not work it could be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan may help in these instances.
Water Damage
You might have water damage if your key fob was submerged in a pool, puddle or washing machine. It's usually possible to restore it's functionality by removing the battery and scrubbing the circuit board with isopropyl alcohol. It is recommended to allow the device to completely dry before installing a battery.
There could be new key for fiat 500 with the module when your key fob ceases working after replacing the battery or replacing it with. There are instructions for reprogramming most vehicles' remote keys on YouTube or refer to the owner's manual. You can also reset the car's computer using the OBDII scanner tool.
Faulty Receiver Module
The key fob has the chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car if damaged. The key fob being dropped can cause this, as could exposure to water. If your key fob isn't functioning due to water exposure and you are unable to fix it if clean the chip with electronic cleaner or isopropyl alcohol.
If the key fob does not respond to cleaning, it's possible that the module has issues and needs to be replaced. A damaged receiver can cause the key to cease to function. This usually happens due to electromagnetic interference.
Electronic chip that is malfunctioning
The electronic chip in the key fob is a vital element of the anti-theft device in your vehicle. It sends a signal to the immobiliser inside your car to inform it if the key is valid. Your car will not start when the chip is damaged.
A faulty chip can also be caused by interference signals from other objects such as weather conditions, objects or transmitters operating on the same frequency in close proximity to your vehicle. In this situation you'll need a new key fob.
Contacts with the battery may be damaged.
The battery contacts of the fob's battery can be damaged due to heavy use. If they are bent, or damaged, the fob will not transmit any signals to receiver modules inside the vehicle.
Modern fobs feature rubber seals to keep out water. A splash of water or a light rain is fine however, submerging them in salt water could damage the electronic chip.
The key fob contains chip that communicates with the immobilizer system of the vehicle, allowing it to start it. The system is based on the old red keys that were used in older vehicles or the crypto coding system in the latest vehicles. If the chip is damaged it will have to be replaced.
Problematic 12 Volt Battery
A damaged battery can cause the key fob to cease working. When this happens the car's computer won't recognize that the remote is inside the vehicle.
Before you replace the battery, test it with the voltmeter to determine its capacity. A fully charged battery will read 12.6 volts. If the reading falls significantly the time is now to replace it.
Place an electrical load for a short time on the battery to gauge its capacity. This will take away about 1% of the surface charge. Then take another measurement of the voltage. The better the battery's capacity and the longer it can keep its voltage. Ideal is to hold close to 12 volts over several minutes.
Radio Signal Faulty Radio Signal
This is the main reason for the key fob not sending signals to a car. This issue can be resolved by replacing the battery. It is crucial to buy batteries that have the same voltage and dimensions as the original.
Fobs take a lot of abuse, and they aren't impervious to destruction. The battery buttons and contacts are brittle, so they can get bent or damaged by the force of.
Other transmitters or objects operating on the same frequency can also disrupt the signal. For instance, a light-control panel near your home may transmit interference on the same frequency as key fobs use. This can interfere with the remote control of your car.
Incorrect OBDII Scan Tool
There are many reasons a scanner tool may not perform. Certain are more complicated than others.
Professional scan tools enable mechanics to examine the car's systems and conduct a variety self-tests. These can be real time savers but they can be expensive, and beyond the range of most DIYers.
If your OBD2 scan tool doesn't turn on, test the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they are all OK, a fuse may have failed. This is among the most common causes of failures in the scan tool. It is usually simple to fix the issue by replacing the blown fuse.