Fiat Panda Key Fob Replacement

fiat car key cutting Panda key fobs contain a transponder chip which sends the signal to your vehicle to open the doors or start the engine. The fob can stop functioning for a variety of reasons.

The most frequent cause of key fob malfunction is a dead coin battery. Other causes include water damages, a faulty module, and interference signals.

Dead Coin Battery

Replace the battery if your key fob has gone out of service. Use a brand new button battery with the same voltage, size and specification as the original.

If the key fob was exposed to water (such as saltwater or rain at the beach) it must be cleaned before using again. The best method is to use the paper towel and soak it in isopropyl or electronic cleaner.

If the key fob isn't working despite being not exposed to water, it could be due to a malfunction in the receiver module or an internal electronic chip. Reprogramming the keyfob using an OBDII scan can help in these cases.

Water Damage

If your key fob's battery has taken immersed in a pool or puddle or gone through the washing machine, you might have some water damage. It's usually possible to fix it by getting rid of the batteries and cleaning the circuit board with rubbing alcohol. It's a good idea to let the fob dry completely before putting in a brand new key for fiat 500 battery.

You may have a faulty module if your key fob stops working after replacing the battery or reprogramming. Reprogramming instructions are available for most vehicles' remote key fobs on YouTube or in the owner's guide. You can also try resetting the car's onboard computer using the OBDII scan tool.

Faulty Receiver Module

The key fob's chip is the chip that communicates the vehicle's system. If this chip becomes damaged, it cannot longer be able to send or receive signals to the vehicle. A key fob falling off can cause this, as well as exposure to water. If your key fob isn't functioning due to water exposure it is possible to fix it by attempting to clean the chip with electronic cleaner or isopropyl alcohol.

If the key fob is still unable to not respond following cleaning, then it is likely that the receiver module is not functioning properly and must be replaced. A damaged receiver module may also cause the remote control key to stop working. This is usually caused by electromagnetic interference.

Faulty electronic chip

The chip inside your key fob plays a vital role in the anti-theft security system in your car. It sends a signal to the immobiliser unit inside your car to inform it whether the key is genuine. Your car won't start in the event that the chip is damaged.

A defective chip could be caused by interference from objects, bad weather or transmitters in the vicinity of your vehicle. In this scenario it is likely that a new fob would be required.

Contacts to the battery are not working properly.

The battery contacts of the fob's battery can be damaged by heavy usage. If they're broken or bent, the fob won't send any signals to the receiver modules inside the car.

Modern fobs are equipped with rubber seals that block out water. A splash of water or light rain should be fine, but submerging them in saltwater could cause damage to the electronic chip.

The key fob has an electronic chip that communicates with the immobilizer system of the vehicle in order to start it. This system uses crypto coding systems in newer vehicles as well as the traditional red key system for older models. The chip must be replaced if it's faulty.

A faulty 12 Volt battery

A malfunctioning battery could cause the key fob not to function. When this happens the car's computer cannot recognize that the remote is inside the vehicle.

Before replacing the battery, you should test it with a 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.

Set an electrical load for a few moments on the battery to test its capacity. This will eliminate one percent of the surface charges. Then measure the voltage again. The greater the battery's capacity is, the longer it will keep its voltage. It is ideal to maintain close to 12 volts during several minutes.

Problems with Radio Signal

This is the most common cause of a key fob that stops sending signals to the car. The issue can be fixed by replacing the battery. It is crucial to buy an identical battery voltage and dimensions as the original.

Fobs take a lot of abuse, but they're also not indestructible. The battery buttons and contacts are brittle and can be bent or broken by excessive use.

Other objects or transmitters using the same frequency could also interfere with the signal. A light-control panel in your home, for example could interfere with key fobs using the same bandwidth. This could interfere with the remote control of your car.

Problems with OBDII Scan Tool

There are many reasons why a scan tool could not function. Some are more complex than others.

Professional scan tools let a mechanic observe the car's network, and run various self-tests. These tools can save you a lot of time, but they're expensive and not accessible to most DIYers.

If your OBD2 scan tool won't power on, test the voltage at terminals 16 (scantool power) and 4 (chassis earth). If they're all fine it could be that a fuse has failed. This is the most typical reason for failure of the scan tool. The simple fix is usually to replace the fuse that is blowing up.