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Fiat Panda key fobs contain a transponder chip that sends an alert to your car to open the doors and start the engine. However, the key fob may stop working due to a variety of causes.

A dead coin battery is the most common reason for key fob malfunctions. Other causes are water damage, the receiver module is defective, and signal interference.

Dead Coin Battery

If your key fob's battery is dead, the first step is to replace it. Use a button cell with the same voltage, size and specification as your old one.

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

If the key fob has not been exposed to water, but remains inoperable it could be a problem with the receiver module or an internal electronic chip. In these cases it is possible to re-programme the key fob using an OBDII scanner may help.

Water Damage

If your key fob's battery has taken a bath in the pool or puddle or even a trip to the washing machine, you could be suffering some water damage. You can usually restore it's functionality by removing the battery and scrubbing the circuit board with isopropyl alcohol. It's best to let the circuit board completely dry before putting in a battery.

If your key fob stopped working, even after replacing the battery and reprogramming it, you may have a faulty receiver module. You can find information on reprograming the majority of remote keys on YouTube or M.dpsee.co.krwww.dpgshop.co.kr/member/login.html?noMemberOrder=&returnUrl=http%3a%2f%2fwww.stes.tyc.edu.tw%2Fxoops%2Fmodules%2Fprofile%2Fuserinfo.php%3Fuid%3D1486220 in your owner's manual. You could also try resetting the car's computer onboard using the OBDII scan tool.

Faulty Receiver Module

The key fob is equipped with the chip that communicates with the vehicle's system. This chip will stop sending and receiving signals to the car when it is damaged. Dropping the key fob can cause this, as could water exposure. If your key fob stopped working due to exposure to water, you may be able to fix it if clean the chip with electronic cleaner or isopropylethanol.

If the key fob still does not respond even after cleaning it you can be sure that the component is damaged and needs to be replaced. A defective receiver can cause the key to cease to function. This is usually caused by electromagnetic interference.

Faulty Electronic Chip

The electronic chip that is in your key fob plays a crucial role in the anti-theft security system of your vehicle. It sends a signal the immobiliser unit inside your vehicle to tell it whether the key is in fact valid. If the chip is damaged or broken, your vehicle will not start.

A damaged chip could be caused by interference signals from objects, bad weather conditions or transmitters operating on the same frequency close to your vehicle. In this scenario, you will need an entirely new key fob.

Faulty battery contacts

The battery contacts inside a key fob are very delicate and could be damaged when used for long periods of time. If they are damaged or bent, the key fob will not be able to send any signals to the receiver modules inside the car.

Modern fobs are designed with rubber seals that keep out water. In the event of submerging them in water, even if it's only the slightest splash or drizzle could damage the chip's electronic components.

The key fob is equipped with an electronic chip that communicates with the immobilizer system of the vehicle to begin it. The system uses the red keys of older vehicles or how To get fiat key code the crypto coding system in modern vehicles. This chip needs to be changed if it is defective.

Poor 12 Volt Battery

A malfunctioning battery could cause the key fob to function. The car's computer won't recognize the remote if 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 falls significantly then it's time to replace the battery.

To determine the capacity of a battery, place an electrical load on it for a few minutes. This will eliminate 1percent of the surface charges. Then measure the voltage again. The longer a battery can hold its voltage more effectively, the greater its capacity. Ideal is to hold close to 12 volts over several minutes.

Problems with Radio Signal

This is the most frequent reason for keys not sending signals to cars. The battery can be replaced to fix this problem. However, it is important to select a replacement battery with the same voltage and size as the original one.

Fobs aren't impervious to damage and can be damaged by a lot. Contacts on batteries and buttons can be damaged through rough handling.

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

The tool is not working properly. OBDII scan tool

There are a variety of reasons why a scanner tool may not perform. Some are more complex than others.

Professional scan tools allow a mechanic to observe the car's networks and run a variety of self-tests. These are real time-savers, but they can also be very expensive and are out of the reach of most DIYers.

If your OBD2 scanner won't turn on make sure you check the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition, it's likely that a fuse has blown. This is the most common reason for failure of the scan tool. It is generally easy to fix the problem by replacing the fuse that has blown.