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Fiat Panda key fobs contain a transponder chip which sends an alert to your car to open the doors or Replacement Key For Fiat Ducato Van start the engine. The fob might stop working for a variety of reasons.

The most common reason for key fob malfunction is the battery of the coin is dead. Other causes include water damages or a damaged module and interference signals.

Dead Coin Battery

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

If the key fob has been exposed to water, such as a splash of rain or salt water on the beach, it needs to be cleaned before it is able to be used again. A paper towel soaked in alcohol or electronic cleaner will help.

If the key fob isn't working even though it is not exposed to water, it could be due to a glitch in the receiver module or in the internal electronic chip. Reprogramming the keyfob through an OBDII scan can help in these cases.

Water Damage

You might have water damage to your key fob if it was submerged in a pool, puddle or washing machine. It's generally possible to repair it by getting rid of the batteries and cleaning the circuit board with rubbing alcohol. It's best to let the fob dry completely before putting in a new battery.

It could be that you have a defective module if your key fob stops working after replacing the battery or reprogramming. You can find reprogramming instructions for all vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset the computer of your vehicle using the OBDII scanner tool.

Faulty Receiver Module

The key fob has an electronic chip that communicates with the vehicle's system. If this chip becomes damaged, it will no longer transmit or receive signals to the vehicle. This can be caused by dropping the key fob, or through exposure to water. If the key fob stopped functioning after exposure to water, it is possible to fix the issue by cleaning the chip with isopropyl alcohol or electronic cleaner.

If the key fob continues to not respond after cleaning it it is likely that the module is faulty and will require to be replaced. A damaged receiver module may also cause the remote control key to cease functioning. This usually happens due to electromagnetic interference.

Faulty Electronic Chip

The electronic chip in your key fob is a vital part in the anti-theft security system of your car. It transmits a signal to the immobiliser unit in your vehicle to tell it whether or not the key is valid. Your car will not start in the event that the chip is damaged.

A malfunctioning chip could be caused by interference signals from other objects such as weather conditions, objects or transmitters operating on the same frequency close to your car. In this instance, a new fob will be needed.

Contacts to the battery are not working properly.

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

Modern fobs are designed with rubber seals that keep out water. A splash of water or light rain is acceptable However, submerging them in salt water could cause damage to the electronic chip.

The key fob has chip that communicates with the immobilizer system of the vehicle, allowing it to start it. This system makes use of cryptocoding systems locked keys in car boot fiat punto newer vehicles as well as the traditional red key system in older models. If the chip is defective it will have to be replaced.

The 12 Volt Battery is faulty

A defective battery can cause the key fob to stop working. When this occurs, the car's computer system won't recognize that the remote is in the vehicle.

Before you replace the battery, test it with the voltmeter to determine its capacity. A fully charged battery should display 12.6 volts. If the reading drops significantly the time is now to replace it.

Put an electrical load for a few seconds on the battery to check its capacity. This will remove approximately 1 percent of the surface charge. Then measure the voltage again. The better the battery's capacity is, the longer it will keep its voltage. Ideally, it will remain close to 12 volts several minutes.

Radio Signal Faulty Radio Signal

This is the most typical reason for a key fob to stop sending signals to cars. This issue can be resolved by replacing the battery. However, it is important to choose a battery that is the same voltage and size as the original.

The buttons are not impervious to destruction and can withstand a lot. The battery buttons and contacts are delicate and can be bent or broken with rough usage.

Other transmitters or objects operating on the same frequency could also interfere with a signal. A light control panel in your home, for instance could interfere with key fobs that use the same frequency. This can affect the remote control of your car.

Faulty OBDII scan tool

There are many reasons scanners may not function. Certain are more complicated than others.

Professional scan tools enable mechanics to examine the car's systems and run a range of self-tests. These are great time-savers, but they are also extremely expensive, and beyond the budget of many DIYers.

If your OBD2 scan tool isn't turning on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If they are all OK it could be that a fuse has failed. This is the main reason for failure of the scan tool. It is typically simple to fix the issue by replacing the fuse that has blown.