You've Forgotten Fiat 500 Keys: 10 Reasons That You No Longer Need It

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fiat punto key Panda key fobs contain transponder chips that send the signal to your vehicle to open the doors and start the engine. However, the key fob may be inoperable due to various reasons.

A dead coin battery is the most frequent reason for malfunctioning keys. Other causes are 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. 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, for example a splash of rain or salt water on the beach, it's going to need to be cleaned before it is able to be used again. A paper towel soaked in alcohol or electronic cleaner will do the trick.

If the key fob hasn't been exposed to water, but it is still not working it could be a problem with the receiver module or an internal electronic chip. Reprogramming the keyfob with an OBDII scan may assist in these situations.

Water Damage

If your key fob took immersed in a pool or puddle or gone down the washing machine, you might have some water damage. You can usually restore it's functionality by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's a good idea allow the fob to dry completely before installing a new battery.

You may have a faulty module in the event that your remote stops working after replacing the battery or changing the programming. You can find the instructions for reprogramming most vehicles' remote keys on YouTube, or consult 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 is equipped with the chip that communicates with the vehicle's system. The chip will stop sending and receiving signals to the car when it is damaged. A key fob falling off can cause this, as could exposure to water. If the key fob has stopped working after exposure to water, it could be possible to repair the issue by cleaning or cleaning the chip using isopropyl alcohol or an electronic cleaner.

If the key fob doesn't respond to cleaning, it's possible that the module has a fault and needs to be replaced. A defective receiver module could also cause the remote control key to stop working. This is typically caused by electromagnetic interference.

Faulty Electronic Chip

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

A malfunctioning chip can be caused by interference from other objects, weather conditions or transmitters close to your vehicle. In this instance it is likely that a new fob would be needed.

Contacts of the battery may be damaged.

The battery contacts inside a key fob are very fragile and are susceptible to damage with hard usage. If they're broken or bent, the fob will not transmit any signals to the receiver modules in the car.

Modern fobs come with rubber seals to keep out water. A splash of water or a light rain is fine but submerging them into salt water could cause damage to the electronic chip.

The key fob contains chip that communicates with the immobilizer system of the vehicle, allowing it to start it. This system makes use of cryptocoding systems in newer vehicles, or the old red key system for older ones. If this chip is faulty, it will need to be replaced.

Faulty 12 Volt Battery

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

Test the battery using the voltmeter before replacing it to determine its capacity. A fully charged battery will display 12.6 volts. If the reading drops significantly the time is now to replace it.

Place an electrical load for a few seconds on the battery to check its capacity. This will take off about 1 percent of the charge on the surface. Then, you can measure the voltage once more. The longer a battery can hold its voltage greater is its capacity. The ideal is to keep it close to 12 volts during several minutes.

Radio Signal Faulty Radio Signal

This is the most typical cause of a fiat ducato key fob programming fob that stops sending signals to the car. The issue can be fixed by replacing the battery. It is crucial to purchase a battery with the same dimensions and voltage as the original.

Fobs take a lot of abuse, but they're not impervious to destruction. Battery contacts and buttons can be damaged through rough handling.

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

Incorrect OBDII scan tool

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

Professional scan tools allow a mechanic to examine the car's systems and perform a variety of self-tests. These can be real time savers, however they can be expensive, out of the budget of most DIYers.

If your OBD2 scan tool isn't turning on, test the voltage at the terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition, it's likely that a fuse is blowing. This is among the most frequent causes of a scan tool failing. The most straightforward fix is to replace the fuse which has blown.