Fiat Panda Key Fob Replacement

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

A dead coin battery is the most common cause of key fob malfunctions. Other causes include water damages, a faulty module, and interference signals.

Dead Coin Battery

If your key fob's battery has died, the first thing to do is replace it. Make use of a button cell battery that has the same voltage, size and specifications as your previous one.

If the key fob was exposed to water (such as saltwater or rain at the beach) It must be cleaned before being used again. A paper towel soaked in isopropyl alcohol or electronic cleaner can help.

If the key fob hasn't been exposed to water but isn't working it could be due to an issue with the receiver module or an internal electronic chip. Reprogramming the keyfob through an OBDII scan could aid in these situations.

Water Damage

There could be water damage if your key fob was submerged in a puddle, pool or washing machine. It's usually possible to fix it by removing the batteries and cleaning the circuit board with rubbing alcohol. It is a good idea to let the fob dry completely before installing a new battery.

You may have a faulty module when your key fob ceases working after replacing the battery or changing the programming. You can find reprogramming instructions for most remote key fobs on YouTube or in the owner's manual. You could also try resetting the car's onboard computer by using the OBDII scan tool.

Faulty Receiver Module

The key fob's chip is the chip that communicates with the car's system. This chip will stop sending and receiving signals to the car when it is damaged. This can be caused by dropping the key fob or by water exposure. If the key fob you have purchased has stopped working due to exposure to water it is possible to fix it if you clean the chip with electronic cleaner or isopropyl alcohol.

However, if the key fob continues to not respond after cleaning it, it is likely that the module is defective and needs to be replaced. A faulty receiver module can also cause the remote control key to not function. This is usually caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip inside your key fob is an essential element of the anti-theft device in your car. It transmits a signal to the immobiliser unit of your car to determine whether or not the key is legitimate. The car will not start in the event that the chip is damaged.

A malfunctioning chip could be caused by interference signals from other objects like bad weather conditions or transmitters on the same frequency close to your car. In this scenario an upgrade to the fob will be needed.

Faulty battery contacts

The battery contacts on a key fob can be damaged through heavy use. If they are bent, or broken, the fob won't transmit any signals to receiver modules in the vehicle.

Modern fobs come with rubber seals to keep out water. Submerging them in water, even if just small splash or drizzle could damage the chip's electronic circuit.

The key fob contains chip that communicates with the immobilizer system of the vehicle, allowing it to start it. It uses the old red keys in older vehicles as well as the cryptocoding system found in newer cars. If this chip is faulty it will have to be replaced.

Faulty 12 Volt Battery

A damaged battery can cause the key fob to stop working. The car's system will not recognize the remote when this occurs.

Test the battery using a voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops significantly, it is time to replace the battery.

To determine the capacity of a battery, place an electrical load on it for a few minutes. This will take away 1percent of the charges. Then, measure the voltage again. The higher the capacity of the battery is, the longer it will maintain its voltage. Ideally, it should remain close to 12 volts for several minutes.

Faulty Radio Signal

This is the most common reason for a key fob to stop sending signals to the car. The battery can be replaced to fix this problem. It is essential to purchase batteries that have the same voltage and dimensions as the original.

Fobs are subject to a lot of punishment, and aren't impervious to destruction. Contacts and buttons on batteries can be damaged by rough handling.

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

Afflicted OBDII Scan Tool

There are many reasons why a scanner could not function. Certain are more complicated than others.

Professional scan tools permit mechanics to look over the car's networks and perform a variety of self-tests. These are great time-savers, but they are also extremely expensive, and out of the range of most DIYers.

If your OBD2 scan tool won't power on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition it's likely that a fuse has failed. This is among the most frequent causes of a scan tool failing. It is often easy to fix the problem by replacing the fuse that has blown.