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fiat bravo key Panda Key Fob fiat replacement car keys

fiat keys panda fiat key fobs (click to investigate) fobs contain a transponder chip which sends a signal to your car to open the doors or start the engine. The fob may stop working due to a variety reasons.

The most common reason for key fob malfunction is a dead coin battery. Other causes include water damage, a faulty module, and interference signals.

Dead Coin Battery

Replace the battery if the key fob is dead. Make use of a new button battery that is the same size, voltage and specification as the previous one.

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

If the key fob isn't working even though it is not exposed to water, it could be due a malfunction in the receiver module, or even in the internal electronic chip. In these cases it is possible to re-programme the key fob using an OBDII scanner can help.

Water Damage

If your key fob has taken an immersion in the pool or puddle or walked down the wash machine, you may have some water damage. You can usually get it back to working by taking the battery off and cleaning the circuit board with isopropyl alcohol. It's best to let the fob dry completely prior to installing a new battery.

You could have a damaged module in the event that your key fob stops working after replacing the battery or replacing it with. You can find instructions for the reprogramming of most remote keys on YouTube or consult 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's chip is a chip that communicates with the vehicle's system. If this chip becomes damaged, it will be unable to longer be able to send or receive signals to the vehicle. Dropping the key fob can result in this, as can exposure to water. If the key fob has stopped working after water exposure it is possible to fix it by cleaning the chip using isopropyl alcohol or electronic cleaner.

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

Faulty Electronic Chip

The electronic chip that is in your key fob is a vital part in the anti-theft security system of your vehicle. It sends a signal to the immobiliser inside your car to determine whether the key is legitimate. If the chip is damaged or broken, your car will not start.

A damaged chip could be caused by interference signals from objects or weather conditions that are bad, or transmitters operating on the same frequency as your car. In this scenario an upgrade to the fob will be required.

Contacts of the battery may be damaged.

The battery contacts of the key fob are delicate and can get damaged with hard usage. If they're bent or broken, the fob won't transmit any signals to receiver modules inside the vehicle.

Modern fobs are constructed with rubber seals to keep out water. Immersing them in water, even if just small splash or drizzle, can damage the electronic chip.

The key fob has chips that communicate with the vehicle's immobilizer system in order to allow it to start. This system uses crypto coding systems in modern vehicles or the red key system for older ones. This chip needs to be replaced if malfunctioning.

Faulty 12 Volt Batterie

A faulty battery may cause the key fob to work. If this happens, the car's computer system cannot recognize that the remote is inside the vehicle.

Test the battery with the voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly, it is time to replace the battery.

Put an electrical load for a few moments on the battery to test its capacity. This will remove 1percent of the surface charges. Then, you can measure the voltage. The better the battery's capacity is, the longer it will keep its voltage. It should be at 12 volts or less for several minutes.

The radio signal is not working properly. Radio Signal

This is the main reason for a key fob that stops sending signals to the car. The battery is able to be replaced to resolve this issue. It is however important to buy a new battery that is the same size and voltage as the original.

The buttons are not impervious to destruction and are susceptible to damage. Contacts and buttons on batteries can be damaged by rough handling.

Other transmitters or objects using the same frequency may also disrupt a signal. For instance, a light-control panel in your home could transmit interference using the same frequency that key fobs utilize. This could affect the remote control of your car.

Afflicted OBDII scan tool

There are a number of reasons why a scan tool may not work. Some are more complex than others.

Professional scan tools let mechanics to look over the car's networks and run various self-tests. These are real time savers, however they can also be very expensive, and beyond the range of most DIYers.

If your OBD2 scanner isn't turning on Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If these are OK, it's likely that a fuse is blowing. This is among the most common causes of failures in the scan tool. It is often easy to fix the problem by replacing the fuse that has blown.