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fiat grande punto key fiat panda key replacement Key Fob Replacement

fiat car key Panda key fobs contain transponder chips that send signals to your car to open the doors or start the engine. However, the fob can not function due to a variety of reasons.

The most frequent cause of key fob malfunction is an inoperable coin battery. Other causes include water damage as well as a defective module and interference signals.

Dead Coin Battery

If your key fob battery has died, the first thing to do is replace it. Use a new button cell battery that is identical in size, voltage and specifications as the old one.

If the key fob has been exposed to water, like a splash of rain or salt water at the beach, it will have to be cleaned before it is able to be used again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner can work wonders.

If the key fob hasn't been exposed to water but isn't working it could be an issue with the receiver module or an internal electronic chip. In these instances, reprogramming the key fob with an OBDII scanner may assist.

Water Damage

You could have water damage to your key fob if it was submerged in a puddle, pool or washing machine. You can usually get it working again by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's best to let the circuit board completely dry prior to installing the battery.

You could have a damaged 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 the owner's manual. You could also try resetting the car's onboard computer using the OBDII scan tool.

Faulty Receiver Module

The key fob has a chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if it becomes damaged. The key fob being dropped can result in this, as can exposure to water. If the key fob has stopped working after water exposure it may be possible to fix it by cleaning the chip using isopropyl ethanol or electronic cleaner.

If the key fob doesn't respond to cleaning, it's possible that the module has an issue and must be replaced. A malfunctioning receiver could cause the key to stop working. This is often caused by electromagnetic interference.

A defective electronic chip

The electronic chip in your key fob plays an important part in the anti-theft security system in your car. It sends a signal the immobiliser unit in your car to inform it whether or not the key is valid. If the chip is damaged or broken, the car will not start.

A malfunctioning chip can be caused by interference from other objects, weather conditions or transmitters located near your vehicle. In this instance, a new fob will be needed.

Contacts to the battery are not working properly.

The battery contacts in the Key code fiat fob are fragile and are susceptible to damage with hard usage. If they're damaged or bent, the key fob will not send any signals to the receiver modules inside the car.

Modern fobs have rubber seals to keep out water. In the event of submerging them in water, even if it's just a light drizzle or splash could damage the chip's electronic components.

The spare fiat 500 key fob comes with chip that communicates with the immobilizer system of the vehicle to start it. This system utilizes cryptocoding systems in modern vehicles as well as the traditional red key system used in older ones. If the chip is defective it will have to be replaced.

Poor 12 Volt Battery

A malfunctioning battery could cause the key fob to work. If this happens the car's computer will not recognize that the remote is in the vehicle.

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

To test the battery's power test the battery's capacity by placing an electrical load on it for a few minutes. This will take off about 1 percent of the surface charge. Then, measure the voltage again. The longer a battery can hold its voltage, the better its capacity. Ideally, it will remain close to 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most common reason for the key fob not sending signals to the car. This problem can be solved by replacing the battery. It is crucial to buy a battery with the same voltage and dimensions as the original.

Fobs endure a lot of punishment, and aren't indestructible. The battery buttons and the contacts are fragile, so they can get bent or broken by rough usage.

Other transmitters or objects that use the same frequency can interfere with the signal. For instance, a lighting control panel close to your home can send interference on the same frequency that key fobs use. This can affect the remote control of your car.

Afflicted OBDII scan tool

There are many reasons why a scanner tool may not work. Certain are more complicated than others.

Professional scan tools enable a mechanic observe the car's network and perform various self-tests. These tools can save a lot of time, but are expensive and out of reach for most DIYers.

If your OBD2 scanner won't start, check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're both in good shape it's likely that a fuse has been blown. This is one of the most frequent reasons for failure of the scanner. It is often easy to fix the issue by replacing the fuse that was blown.