Forget Fiat 500 Keys: 10 Reasons Why You Don't Really Need It

fiat doblo key Panda Key Fob Replacement

fiat punto car key Panda keyfobs are equipped with a transponder which transmits a signal from the fob to the car in order to unlock doors or start the motor. However, the fob can stop working due to a variety of causes.

The most frequent cause of key fob malfunction is an inoperable coin battery. Other causes are water damage, an inoperative receiver module and signal interference.

Dead Coin Battery

Replace the battery if your key fob is dead. Use a button cell battery with the same voltage, size, and specifications as your previous one.

If the key fob has been exposed how to start a fiat 500x with key water, such as 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 that has been soaked in isopropyl alcohol or electronic cleaner will help.

If the key fob hasn't been exposed to water, but still does not work it could be an issue with the receiver module or an internal electronic chip. In these situations you can reprogramme the key fob with an OBDII scanner may aid.

Water Damage

You might have water damage if your key fob was submerged in a puddle, pool or washing machine. You can usually restore it's functionality by taking the battery off and cleaning the circuit board with isopropyl alcohol. It is best to let the fob completely dry prior to installing batteries.

You could have a damaged module if your key fob stops working after replacing the battery or reprogramming. You can find information on the reprogramming of most remote keys on YouTube, or consult your owner's manual. You can also reset the computer in your car with the OBDII scanner tool.

Faulty Receiver Module

The key fob has a chip which communicates with the vehicle's system. If the chip is damaged, it can no longer be able to send or receive signals to the vehicle. Dropping the key fob could cause this, as well as water exposure. If the key fob stopped functioning after exposure to water, it could be possible to repair 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 an issue and should be replaced. A defective receiver can cause the key to not work. This is usually due to electromagnetic interference.

Electronic chip that is malfunctioning

The electronic chip inside your key fob is an important part of the anti-theft system in your vehicle. It transmits a message the immobiliser inside your car to determine whether the key is genuine. If the chip is damaged or broken, your car won't start.

A faulty chip may also be caused by interference from other objects, weather conditions or transmitters in the vicinity of your vehicle. In this scenario the replacement fob will be needed.

Contacts for the battery that are defective

The battery contacts on a key fob are very delicate and can get damaged when used for long periods of time. If they are bent, or broken, the fob won't transmit any signals to receiver modules in the vehicle.

Modern fobs come with rubber seals that block out water. A splash of water or a light rain should be fine However, submerging them in saltwater can cause damage to the chip's electronic components.

The key fob has chip that communicates with the immobilizer system of the vehicle to begin it. This system makes use of cryptocoding systems in newer vehicles as well as the traditional red Leather key Cover system used in older models. This chip will need to be replaced if malfunctioning.

Faulty 12 Volt Battery

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

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

Place an electrical load for a few seconds on the battery to determine its capacity. This will remove 1percent of the charges. Then measure the voltage again. The better the battery's capacity and the longer it can keep its voltage. Ideally, it should remain close to 12 volts for several minutes.

The radio signal is not working properly. Radio Signal

This is the most typical reason behind a key fob that ceases to send signals to the car. The battery can be replaced to solve this issue. However, it is crucial to choose a battery that is the same size and voltage as the original.

Fobs aren't indestructible and can take a lot. Contacts and buttons on batteries can be damaged by rough handling.

A signal can also be impacted by other objects or transmitters that use the same frequency. For instance, a light-control panel that is near your home could send interference on the same frequency as key fobs use. This can affect the remote control of your car.

Afflicted OBDII Scan Tool

There are a number of reasons why a scanner could not work. Certain are more complicated than others.

Professional scan tools enable mechanics to monitor the car's network and perform various self-tests. These are great time-savers, but they can be expensive, and beyond the reach of most DIYers.

If your OBD2 scanner doesn't work Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition it's likely that a fuse is blowing. This is one of the most frequent reasons for failure of the scanner. The simple fix is usually to replace the fuse which has blown.