Fiat doblo key fob replacement Panda Key Fob replacement fiat 500 key

Fiat Panda keyfobs are equipped with a transponder, which sends signals from the fob to the car to unlock doors or start the motor. However, the fob could stop working for several reasons.

A dead coin battery is the most frequent cause of key fob malfunctions. Other causes are water damage, malfunctioning receiver modules, and signal interference.

Dead Coin Battery

If your key fob battery has gone out of service, the first thing to do is replace it. Make use of a new button battery that has identical in size, voltage and specifications as the previous one.

If the key fob has been exposed to water, like a splash of rain or salt water on the beach, it needs to be cleaned before it can be used again. A paper towel soaked in alcohol or electronic cleaner can do the trick.

If the key fob hasn't been exposed to water but still does not work, there may be an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob by using an OBDII scan may help in these instances.

Water Damage

If your key fob has gotten an immersion in the puddle or pool or gone down the washing machine, it could have some water damage. It's usually possible to fix it by taking the batteries off and cleaning the circuit board using ruby alcohol. It's a good idea let the fob dry completely before putting in a new battery.

If your key fob isn't working, even after replacing the battery and reprogramming it, you may have a problem with the receiver module. There are instructions for changing the programming of most remote keys on YouTube or consult the owner's manual. You can also reset the computer of your car using the OBDII scanner tool.

Faulty Receiver Module

The key for fiat 500 fob is equipped with a chip that communicates with the car's system. The chip will stop sending and receiving signals to the car when it is damaged. Dropping the key fob could result in this, as can water exposure. If the key fob you have purchased has stopped working due to water exposure, you may be able to fix it if you clean the chip using electronic cleaner or isopropyl alcohol.

If the key fob does not respond to cleaning, it's possible that the module has an issue and must be replaced. A faulty receiver module can also cause the remote control key to stop functioning. This is usually due to electromagnetic interference.

A malfunctioning electronic chip

The chip inside your key fob plays a vital part in the anti-theft security system of your vehicle. It transmits a message to the immobiliser inside your car to tell it if the key is valid. The car won't start in the event that the chip is damaged.

A faulty chip can also be caused by interference signals from other objects, bad weather conditions or transmitters operating on the same frequency close to your car. In this situation it is likely that a new fob would be required.

Contacts to the battery are not working properly.

The battery contacts in a key fob are very delicate and can get damaged by repeated use. If they're broken or bent, the fob will not transmit any signals to the receiver modules inside the car.

Modern fobs are equipped with rubber seals that keep out water. A splash of water or light rain should be fine but submerging them into salt water could harm the chip's electronic components.

The key fob comes with chip that communicates with the immobilizer system of the vehicle, allowing it to start it. The system utilizes the old red keys for older vehicles as well as the cryptocoding system found in the latest vehicles. This chip will need to be changed if it is malfunctioning.

Problematic 12 Volt Battery

A malfunctioning battery could cause the key fob to cease working. The car's computer may not recognize the remote if this happens.

Before you replace the battery, test it with an voltmeter for determining its capacity. A fully charged battery should read 12.6 volts. If the reading decreases significantly it is time to replace the battery.

Place an electrical load for a few moments on the battery to check its capacity. This will take off about 1 percent of the charge on the surface. After that, measure the voltage. The greater the battery's capacity and the longer it can maintain its voltage. The ideal scenario is to keep it close to 12 volts several minutes.

Problems with Radio Signal

This is the most frequent reason for a key fob to stop sending signals to vehicles. This problem can be solved by replacing the battery. It is important to buy batteries that have the same dimensions and voltage as the original.

Fobs aren't indestructible and can withstand a lot. Battery contacts and buttons can be damaged by rough handling.

Other transmitters or objects using the same frequency may also interfere with the signal. For instance, a lighting control panel that is near your home could send interference over the same bandwidth that key fobs utilize. This could cause interference with your car's remote control.

Faulty OBDII Scan Tool

There are a number of reasons why a scan tool might not work. Some are more complicated than others.

Professional scan tools let mechanics to monitor the car's network, and run various self-tests. These can be real time-savers, but they can be expensive, out of the budget of most DIYers.

If your OBD2 scan tool won't power on, make sure you check the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If all is fine it could be that a fuse has failed. This is the main reason for failure of the scan tool. It is usually easy to fix the problem by replacing the fuse that has blown.