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fiat punto locked keys in car fiat panda key key fobs contain transponder chips that send signals to your car to open the doors or start the engine. The fob may stop working for a variety of reasons.

The most common reason for key fob failure is a dead coin battery. Other causes are water damage as well as a defective module and interference signals.

Dead Coin Battery

Replace the battery if your key fob has died. Use a brand new button battery with the same voltage, size, and specification like the previous one.

If the key fob was exposed to water (such as saltwater or rain at the beach) it must be cleaned prior where to get a fiat key cut being used again. The best solution is to use an old towel soaked in isopropyl, or electronic cleaner.

If the key fob is not working even though it is not exposed to water, it could be due to a glitch in the receiver module or internal electronic chip. Reprogramming the keyfob by using an OBDII scan may help in these instances.

Water Damage

It is possible to get water damage if your key fob was submerged in a pool, puddle or washing machine. It's usually possible to get it working by taking the batteries off and cleaning the circuit board with rubbing alcohol. It is best to let the fob completely dry before installing a battery.

You may have a faulty module in the event that your remote stops working after replacing the battery or changing the programming. There are instructions for changing the programming of most remote keys on YouTube, or consult your owner's manual. You can also reset your computer in your car with the OBDII scanner tool.

Faulty Receiver Module

The key fob's chip is a chip which communicates with the vehicle's system. If the chip is damaged, it will no longer transmit or receive signals to the vehicle. A key fob falling off can cause this, as can water exposure. If your key fob stopped working due to water exposure, you may be able fix the issue if you clean the chip with electronic cleaner or isopropylethanol.

If the key fob won't respond to cleaning, it's likely that the module is in an issue and must be replaced. A damaged receiver module may also cause the remote control key to cease functioning. This is typically caused by electromagnetic interference.

Faulty electronic chip

The electronic chip that is in your key fob plays a crucial role in the anti-theft system of your vehicle. It sends a message to the immobiliser inside your car to determine if the key is valid. If the chip is damaged or broken, the car won't start.

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

Contacts with the battery may be damaged.

The battery contacts of the fob's key can be damaged by heavy usage. If they are broken or bent, the fob will not be able to send any signals to the receiver modules inside the car.

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

The key fob contains a chip which communicates with the immobilizer system of the vehicle to begin it. This system uses crypto coding systems in modern vehicles or the red key system used in older ones. If the chip is not working properly it must be replaced.

Faulty 12 Volt Battery

A malfunctioning battery could cause the remote to stop working. The fiat car key cutting's computer may not recognize the remote if this occurs.

Test the battery using an voltmeter prior to replacing it to determine its capacity. A fully charged battery will read 12.6 volts. If the reading falls dramatically then it's time to replace the battery.

To test the battery's power to determine its capacity, put an electric load on it for a couple of minutes. This will take off about 1 percent of the charge on the surface. Then, you can measure the voltage. The longer the battery is able to keep its voltage steady, the better its capacity. The ideal is to keep it close to 12 volts for several minutes.

Radio Signal Faulty Radio Signal

This is the most typical cause of a key fob that ceases to send signals to the car. The battery is able to be replaced to resolve this issue. However, it is important to buy a new battery that has the same size and voltage as the original one.

Fobs take a lot of abuse, but they're also not impervious to destruction. The battery buttons and the contacts are fragile and are susceptible to being bent or broken by the force of.

The signal could also be disrupted by other transmitters or objects who use the same frequency. For instance, a light control panel that is near your home could transmit interference using the same frequency as key fobs use. This can affect the remote control of your car.

Faulty OBDII Scan Tool

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

Professional scan tools let mechanics to observe the car's network and perform various self-tests. They can be huge time savers, but they are also extremely expensive, and out of the range of most DIYers.

If your OBD2 scan tool fails to turn on, test the voltage at terminals 16 (scantool power) and 4 (chassis earth). If both are in good condition it could be that a fuse has been blown. This is one of the most common causes of a scan tool failing. The easiest solution is to replace the fuse that has been blown.