Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain transponder chips that send signals to your car to open the doors and start the engine. However, the key fob may stop working for several reasons.
A dead battery for the coin is the most frequent cause of a key fob malfunction. Other causes include water damage, an inoperative receiver module and signal interference.
Dead Coin Battery
If your key fob battery has failed, the initial step is to replace it. Make use of a new button battery that has the same size, voltage and specification like the previous one.
If the key fob was exposed to water, for example a splash of rain or salt water at the beach, it's going to need to be cleaned before it can be used again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner can work wonders.
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. In these cases you can reprogramme the key fob with an OBDII scanner might help.
Water Damage
If your key fob's battery has taken an immersion in the pool or puddle or walked through the washing machine, you could be suffering some water damage. It is usually possible to restore it's functionality by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's a good idea allow the fob to dry completely before putting in a brand new battery.
You may have a faulty module in the event that your key fob stops working after replacing the battery or updating. You can find reprogramming instructions for all vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset your computer of your vehicle using the OBDII scanner tool.
Faulty Receiver Module
The key fob has the chip that communicates with the vehicle's system. If this chip becomes damaged, it will be unable to longer send and receive signals to the vehicle. This can be caused by dropping the key fob, or by water exposure. If the key fob is not working after exposure to water, it could be possible to fix the issue by cleaning the chip with isopropyl alcohol or electronic cleaner.
If the key fob doesn't respond to cleaning, it's possible that the receiver module has issues and needs to be replaced. A damaged receiver can cause the key to stop working. This is usually caused by electromagnetic interference.
Faulty Electronic Chip
The chip inside your key fob plays an important role in the anti-theft system of your vehicle. It sends out a signal the immobiliser unit inside your car to determine whether the key is valid. If the chip is damaged or damaged, your car will not start.
A defective chip can be caused by interference signals from other objects, bad weather conditions or transmitters on the same frequency close to your car. In this situation it is likely that a new fob would be required.
Faulty battery contacts
The battery contacts in the key fob are delicate and may be damaged with hard usage. If they're bent or damaged, the fob will not send any signals to the receiver modules in the vehicle.
Modern fobs have rubber seals that keep out water. In the event of submerging them in water, even if just an occasional drizzle or splash could harm the chip's electronic components.
The key fob houses a chip that communicates with the vehicle's immobilizer system in order to start it. The system uses the old red keys that were used in older vehicles as well as the cryptocoding system found in modern vehicles. If the chip is not working properly, it will need to be replaced.
Poor 12 Volt Battery
A faulty battery may cause the key fob to work. The car's computer will not recognize the remote when this happens.
Before replacing the battery, you should test it with a an voltmeter to gauge its capacity. A fully charged battery should display 12.6 volts. If the reading decreases significantly then it's time to replace the battery.
Set an electrical load for a short period of time on the battery to gauge its capacity. This will take off about 1% of the surface charge. Then, stuck can measure the voltage again. The better the battery's capacity, the longer it can keep its voltage. Ideal is to hold close to 12 volts during several minutes.
The radio signal is not working properly. Radio Signal
This is the most typical reason for the key fob not sending signals to vehicles. The battery is able to be replaced to resolve this problem. It is important to buy an identical battery voltage and dimensions as the original.
Fobs take a lot of punishment, and aren't impervious to destruction. The battery contacts and buttons are delicate and can be bent or damaged from rough usage.
Other transmitters or objects that use the same frequency could also disrupt the signal. For example, a light-control panel near your home may transmit interference using the same bandwidth that key fobs use. This can interfere with the remote control of your car.
Incorrect OBDII scan tool
There are a number of reasons why a scanner could not function. Some are more complex than others.
Professional scan tools allow a mechanic to monitor the car's network and run a range of self-tests. They can be huge time savers but they are also extremely expensive, and beyond the budget of many DIYers.
If your OBD2 scan tool isn't turning on, check voltage at terminals 16 (scantool power) and 4 (chassis earth). If they are all OK, a fuse may have been blown. This is one of the most common causes of a scan tool failing. It is usually easy to fix the problem by replacing the blown fuse.