You Can Explain Fiat 500 Keys To Your Mom Fiat Panda Key Fob Replacement

Fiat Panda keyfobs are equipped with a transponder, which sends an indication from the fob to the car to open doors or start the motor. However, the key fob may stop working due to a variety of causes.

A dead battery for the coin is the most common reason for key fob malfunctions. Other causes include water damage, an inoperative receiver module, and signal interference.

Dead Coin Battery

If your key fob battery is dead, the first step is to replace it. Make use of a button cell battery that has the same voltage, size, and specification as your old one.

If the key fob has been exposed to water, such as a splash of rain or salt water on the beach, it will have to be cleaned before it is able to be used again. The trick is to use a paper towel that has been soaked in isopropyl, or electronic cleaner.

If the key fob has not been exposed to water but isn't working, there may be a problem with the receiver module or an internal electronic chip. In these cases you can reprogramme the key fob with an OBDII scanner can assist.

Water Damage

If your key fob has gotten submerged in a puddle or pool or even a trip to the washing machine, you could be suffering some water damage. You can usually get it back to working by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's best to allow the fob to dry completely before putting in a new battery.

There could be a problem with the module in the event that your remote stops working after replacing the battery or changing the programming. You can find instructions for the reprogramming of most remote keys on YouTube, or consult your owner's manual. You can also try resetting the car's onboard computer by using the OBDII scan tool.

Faulty Receiver Module

The key fob's chip is a chip that connects to the car's system. This chip will stop sending and receiving signals to the car if it becomes damaged. Dropping the key fob could cause this, as well as 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.

If G28 does not respond after cleaning it then it is likely that the receiver module is not functioning properly and needs to be replaced. A faulty receiver module can also cause the remote control key to stop functioning. This is often caused by electromagnetic interference.

A malfunctioning electronic chip

The chip that is embedded in the key fob is an important part of the anti-theft system in your car. It transmits a signal to the immobiliser unit in your car to inform it whether the key is legitimate. Your car will not start in the event that the chip has been damaged.

A defective chip can be caused by interference signals from other objects or weather conditions that are bad, or transmitters operating on the same frequency close to your car. In this scenario you'll need a new key fob.

Faulty Battery Contacts

The battery contacts in a key fob are very fragile and are susceptible to damage through repeated use. If they're bent, or broken, the fob won't transmit any signals to receiver modules inside the vehicle.

Modern fobs are made with rubber seals that keep out water. Immersing them in water, even if it's just the slightest splash or drizzle could damage the chip's electronic components.

The key fob has a chip which communicates with the immobilizer system of the vehicle, allowing it to start it. It uses the old red keys that were used in older vehicles, or the cryptocoding system found in the latest vehicles. This chip will have to be changed if it is defective.

Poor 12 Volt Battery

A defective battery can cause the key fob to function. The car's computer will not recognize the remote if this happens.


Before you replace the battery, test it by using a an voltmeter for determining its capacity. A fully charged battery will display 12.6 volts. If the reading drops significantly then it's time to replace it.

Install an electrical charge for a few moments on the battery to check its capacity. This will take away 1% of the surface charges. After that, take the voltage once more. The better the battery's capacity is, the longer it will maintain its voltage. The ideal is to keep it close to 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most typical cause of a key fob that ceases to send signals to the car. This issue can be fixed by replacing the battery. It is however important to buy a new battery that is the same size and voltage as the original.

Fobs are not indestructible and can be damaged by a lot. Contacts on batteries and buttons can be damaged through rough handling.

The signal could also be impacted by other transmitters or objects who use the same frequency. For instance, a lighting control panel near your home may transmit interference on the same frequency that key fobs utilize. This could interfere with the remote control of your car.

Incorrect OBDII scan tool

There are many reasons why scanner tools may not function. Some are more complicated than others.

Professional scan tools enable mechanics to look over the car's network and perform various self-tests. These tools can help save time, but they are costly and not accessible to the majority of DIYers.

If your OBD2 scan tool doesn't turn on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If they're all fine the fuse could have blown. This is the most typical reason for failure of the scan tool. The simple fix is usually to replace the blown fuse.