A Journey Back In Time The Conversations People Had About Fiat 500 Keys 20 Years Ago
fiat punto key replacement contain a transponder chip that sends the signal to your vehicle to open the doors or start the engine. The fob may stop working for a variety.
The most common cause of key fob malfunction is the battery of the coin is dead. Other causes include water damages as well as a defective module and interference signals.
Dead Coin Battery
Replace the battery in case your key fob has died. Choose a button battery 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 before using again. The best method is to use a paper towel soaked with isopropyl, or electronic cleaner.
If the key fob doesn't working even though it is not exposed to water, it could be due to a glitch in the receiver module, or even in the internal electronic chip. In these cases it is possible that reprogramming the key fob with an OBDII scanner could help.
Water Damage
If your key fob's battery has taken an immersion in the puddle or pool or even a trip down the wash machine, you might have some water damage. It's generally possible to repair it by taking the batteries off and cleaning the circuit board using rubbing alcohol. It is recommended to let the board 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 replacing it with. You can find the instructions for changing the programming of most remote keys on YouTube or refer to the owner's manual. You can also reset the car's computer using the OBDII scanner tool.
Faulty Receiver Module
The key fob has a chip which communicates with the vehicle's system. The chip will stop sending and receiving signals to the car if damaged. This can be caused by dropping the key fob, or through exposure to water. If the key fob is not working after exposure to water it may be possible to fix it by cleaning the chip with isopropyl alcohol or an electronic cleaner.
However, if the key fob is still unable to not respond after cleaning it you can be sure that the module is faulty and will need to be replaced. A defective receiver module could also cause the remote control key to stop functioning. This is typically caused by electromagnetic interference.
Faulty Electronic Chip
The electronic chip in your key fob is a crucial component of the anti-theft systems in your vehicle. It sends a signal to the immobiliser inside your car to tell it that the key is valid. The car won't start if 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 as your car. In this situation it is likely that a new fob would be needed.
Faulty Battery Contacts
The battery contacts on the key fob could be damaged through heavy use. If they are bent or broken the fob will not transmit any signals to the receiver modules inside the car.
Modern fobs are constructed with rubber seals to keep out water. A splash of water or a light rain is fine, but submerging them in saltwater can cause damage to the electronic chip.
The key fob has the chip that connects to the vehicle's immobilizer to allow it to activate it. The system utilizes the red keys of older vehicles or the cryptocoding system used in modern vehicles. This chip will need to be replaced if damaged.
Poor 12 Volt Battery
A faulty battery can cause the remote to cease to function. When this happens the car's computer cannot recognize that the remote is within the vehicle.
Test the battery using the help of a voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading falls significantly it's time to change it.
To test the battery's capacity test the battery's capacity by placing an electrical load on it for a couple of minutes. This will eliminate 1% of the surface charges. Then, test the voltage again. The higher the capacity of the battery and the longer it can maintain its voltage. Ideal is to hold close to 12 volts for several minutes.
Problems with Radio Signal
This is the main reason for keys not sending signals to vehicles. This problem can be solved by replacing the battery. It is crucial to purchase batteries that have the same dimensions and voltage as the original.
Fobs are subject to a lot of abuse, but they're not impervious to destruction. The battery buttons and contacts are brittle and can be bent or damaged by excessive use.
Other transmitters or objects using the same frequency may also interfere with the signal. A light control panel in your home, for instance can interfere with key fobs using the same bandwidth. This could affect the remote control of your car.
Afflicted OBDII Scan Tool
There are many reasons why a scan tool could not function. Some are more complex than others.
Professional scan tools enable mechanics to examine the car's systems and conduct a variety self-tests. These tools can save a lot of time, but they're expensive and out of reach for most DIYers.
If your OBD2 scanner won't turn on Check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're both in good shape the chances are that a fuse has blown. This is one of the most common causes of failures in the scan tool. The easiest fix is to replace the fuse that is blowing up.