Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain an transponder chip that transmits an alert to your car to open the doors and start the engine. The fob can stop functioning due to a variety reasons.
The most frequent cause of key fob malfunction is the battery of the coin is dead. Other causes are water damage, a faulty module, and interference signals.
Dead Coin Battery
If the battery in your key fob has gone out of service, the first thing to do is replace it. Use a brand new button battery that has identical in size, voltage and specification like the previous one.
If the key fob was exposed to water, such as a splash of rain or salt water at the beach, it needs to be cleaned before it can be used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can help.
If the key fob has not been exposed to water but isn't working, there may be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan could help in these instances.
Water Damage
You might have water damage if your key fob was submerged in a pool, puddle or washing machine. You can usually restore it's functionality by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It's a good idea to allow the fob to dry completely prior to installing a new battery.
If your key fob stopped working even after replacing the battery and reprogramming it, you may have a problem with the receiver module. You can find reprogramming instructions for all vehicles' remote key fobs on YouTube or in the owner's guide. You could also try resetting the car's onboard computer with the OBDII scan tool.
Faulty Receiver Module
The key fob is equipped with an electronic chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. This could be due to dropping the key fob or due to exposure to water. If the key fob stopped working after exposure to water, it may be possible to fix the issue by cleaning the chip using isopropyl alcohol or an electronic cleaner.
If the key fob doesn't respond to cleaning, it's possible that the module has an issue and should be replaced. A defective receiver module could also cause the remote control key to stop functioning. This usually happens due to electromagnetic interference.
Electronic chip that is malfunctioning
The electronic chip in the key fob is an essential component of the anti-theft systems in your car. It sends a signal to the immobiliser unit in the vehicle to determine whether the key is legitimate. The car will not start if the chip is damaged.
A defective chip can be caused by interference signals from objects like bad weather conditions or transmitters operating on the same frequency in close proximity to your vehicle. In this instance you'll need an entirely new key fob.
Contacts to the battery are not working properly.
The battery contacts inside a key fob are very delicate and could be damaged with hard usage. If they're bent, or broken, the fob won't send any signals to the receiver modules in the vehicle.
Modern fobs are constructed with rubber seals to keep out water. Submerging them in water, even if it's just small splash or drizzle, can damage the electronic chip.
The key fob contains an electronic chip that communicates with the vehicle's immobilizer system to allow it to start. The system uses the old red keys for older vehicles, or the cryptocoding system used in newer vehicles. The chip must be replaced if defective.
Faulty 12 Volt Battery
A malfunctioning battery could cause the key fob to function. The car's computer will not recognize the remote when this occurs.
Test the battery with a voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly, it's time to replace it.
Install an electrical charge for a few seconds on the battery to check its capacity. This will take off approximately 1% of the charge on the surface. Then, you can measure the voltage again. The better the battery's capacity is, the longer it will keep its voltage. Ideally, it will remain close to 12 volts for several minutes.
Radio Signal Faulty Radio Signal
This is the most frequent reason for the key fob to stop sending signals to the car. The battery can be replaced to solve this problem. It is essential to purchase an identical battery dimensions and voltage as the original.
Fobs take a lot of punishment, and aren't indestructible. The battery buttons and the contacts are fragile, so they can get bent or damaged by rough use.
A signal can also be interrupted by other objects or transmitters who use the same frequency. A light-control panel in your home, for example, may interfere with key fobs that have the same bandwidth. This could affect the remote control of your car.
Incorrect OBDII scan tool
There are many reasons scanners don't work. Certain are more complicated than others.
Professional scan tools enable a mechanic observe the car's networks and run various self-tests. These tools can save you a lot of time, but they are costly and out of reach for most DIYers.
If thekeylab.co.uk OBD2 scan tool isn't turning on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If these are both present it's possible that a fuse has been blown. This is the most common reason for failure of the scan tool. The easiest solution is to replace the fuse that is blowing up.