Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain a transponder chip which sends a signal to your car to open the doors and start the engine. However, the fob may stop working for several reasons.
The most commonly cited reason for key fob failure is a dead coin battery. Other causes include water damage or a malfunctioning module and interference signals.
Dead Coin Battery
Replace the battery if your key fob is dead. Make use of a button cell battery with the same voltage, size and specifications as the old one.
If the key fob was exposed to water (such as rain or saltwater at the beach) it should be cleaned prior to being used again. The trick is to use the paper towel and soak it in isopropyl or electronic cleaner.
If the key fob isn't working even though it is not exposed to water it could be due to a glitch in the receiver module or in the internal electronic chip. In these situations it is possible that reprogramming the key fob using an OBDII scanner can assist.
Water Damage
There could be water damage to your key fob if it was submerged in a pool, puddle or washing machine. It is usually possible to be able to get it back up and running by taking the battery off and cleaning the circuit board with isopropyl alcohol. It is best to let the fob completely dry prior to installing the battery.
There could be a problem with the module in the event that your remote stops working after replacing the battery or replacing it with. You can find the instructions for the reprogramming of most remote keys on YouTube or refer to the owner's manual. You can also try resetting the car's onboard computer with the OBDII scan tool.
Faulty Receiver Module
The key fob contains an electronic chip that communicates with the vehicle's system. If this chip becomes damaged, it can no longer send and receive signals to the vehicle. This could be due to dropping the key fob or through exposure to water. If your key fob has stopped working due to exposure to water it is possible to fix it if clean the chip with electronic cleaner or isopropyl alcohol.
If the key fob is still unable to not respond after cleaning it, it is likely that the receiver module is not functioning properly and must be replaced. A faulty receiver module can also cause the remote control key to stop functioning. This is often caused by electromagnetic interference.
A defective electronic chip
The electronic chip inside your key fob plays an important role in the anti-theft security system in your car. It sends a message to the immobiliser in your car that tells it that the key is valid. The car will not start if the chip is damaged.
A faulty chip may also be caused by interference from other objects, bad weather or transmitters close to your vehicle. In this scenario, you will need a new key fob.
Contacts with the battery may be damaged.
The battery contacts of the fob's battery can be damaged through heavy use. If they're bent, or damaged, the fob will not send any signals to receiver modules inside the vehicle.
Modern fobs are made with rubber seals to keep out water. In the event of submerging them in water, even if just small splash or drizzle could harm the chip's electronic components.
The key fob comes with chip that communicates with the immobilizer system of the vehicle in order to start it. The system uses the old red keys for older vehicles, or the cryptocoding system used in modern vehicles. If the chip is defective it will have to be replaced.
The 12 Volt Battery is faulty
A damaged battery could cause the key fob not to function. When this occurs, the car's computer system will not be able to recognize that the remote is inside the vehicle.
Test the battery using the voltmeter before replacing it to determine its capacity. A fully charged battery will display 12.6 volts. If the reading decreases significantly, it's time to replace it.
Install an electrical charge for a short time on the battery to check its capacity. This will take away approximately 1 percent of the charge on the surface. Then measure the voltage again. The longer a battery can hold its voltage, the better its capacity. Ideal is that it stays close to 12 volts for several minutes.
Faulty Radio Signal
This is the most frequent reason for a key fob that ceases to send signals to the car. This problem can be solved by replacing the battery. It is crucial to buy an identical battery voltage and dimensions as the original.
Fobs aren't indestructible and can withstand a lot. The battery contacts and buttons are delicate and can be bent or damaged by the force of.
Other transmitters or objects operating on the same frequency could also interfere with a signal. For instance, a light-control panel in your home could send interference over the same frequency that key fobs use. This could cause interference with the remote control of your car.
Incorrect OBDII scan tool
There are many reasons scanners don't perform. fiat 500 key programming are more complicated than others.
Professional scan tools enable a mechanic observe the car's network and perform various self-tests. These can be real time savers, however they can be expensive, and out of the range of most DIYers.
If your OBD2 scanner won't turn on Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they are all OK it could be that a fuse has blown. This is among the most frequent causes of scan tool failure. The easiest solution is to replace the fuse which has blown.