Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder that transmits an indication from the fob to the car to unlock doors or start the motor. The fob can stop functioning due to a variety of reasons.
The most commonly cited reason for key fob malfunction is the battery of the coin is dead. Other causes include water damage or a damaged module and interference signals.
Dead Coin Battery
If the battery in your key fob is dead, the first step is to replace it. Choose fiat 500 car keys with the same voltage, size and specifications as the old one.
If the key fob was exposed to water (such as rain or saltwater at the beach), it must be cleaned before being used again. The trick is to use an old towel soaked in isopropyl or an electronic cleaner.
If the key fob has not been exposed to water, but isn't working it could be due to a problem with the receiver module or an internal electronic chip. In these cases you can reprogramme the key fob with an OBDII scanner can aid.
Water Damage
You might have water damage if your key fob was submerged in a puddle, pool or washing machine. It's usually possible to fix it by taking the batteries off and cleaning the circuit board with ruby alcohol. It's a good idea allow the fob to dry completely prior to installing a new battery.
You may have a faulty module when your key fob ceases working after replacing the battery or updating. You can find instructions for reprogramming most vehicles' remote keys on YouTube, or consult your owner's manual. You can also try resetting the car's onboard computer by using the OBDII scan tool.
Faulty Receiver Module
The key fob is equipped with the chip that communicates the vehicle's system. If this chip becomes damaged, it cannot longer transmit and receive signals to the vehicle. Dropping the key fob could cause this, as can exposure to water. If your key fob stopped functioning due to exposure to water it is possible to fix it if clean the chip using electronic cleaner or isopropyl alcohol.
If the key fob does not respond to cleaning, it is possible that the receiver module has a fault and needs to be replaced. A damaged receiver can cause the key to stop working. This usually happens due to electromagnetic interference.
Faulty Electronic Chip
The electronic chip inside your key fob plays a crucial function in the anti-theft security system of your car. It sends a signal to the immobiliser unit inside the vehicle to determine whether or not the key is valid. Your car will not start when the chip is damaged.
A faulty chip can also be caused by interference signals from other objects like bad weather conditions or transmitters operating on the same frequency in close proximity to your car. In this instance you'll require an entirely new key fob.
Contacts of the battery may be damaged.
The battery contacts of a key fob are very delicate and could be damaged by repeated use. If they're bent, or damaged, the fob will not send any signals to the receiver modules in the vehicle.
Modern fobs are made with rubber seals in order to keep out water. A splash of water or light rain should be fine however, submerging them in saltwater may harm the electronic chip.
The key fob comes with an electronic chip that communicates with the immobilizer system of the vehicle to start it. The system relies on cryptocoding systems in the latest vehicles and the older red key system in older models. If the chip is not working properly it must be replaced.
A faulty 12 Volt battery
A damaged battery could cause the key fob not to work. The car's computer will not recognize the remote when this happens.
Before you replace the battery, test it with the voltmeter to determine its capacity. A fully charged battery will display 12.6 volts. If the reading falls significantly then it's time to replace the battery.
To determine the capacity of a battery put an electrical load on it for a couple of minutes. This will eliminate 1percent of the surface charges. Then, test the voltage once more. The longer the battery can hold its voltage greater is its capacity. It should be close to 12 volts for several minutes.
Radio Signal Faulty Radio Signal
This is the most common reason behind a key fob that ceases to send signals to the car. The battery can be replaced to solve this issue. It is essential to purchase an identical battery dimensions and voltage as the original.
Fobs take a lot of abuse, but they're also not impervious to destruction. The battery buttons and contacts are delicate and can be bent or damaged from rough usage.
A signal may also be affected by other objects or transmitters who use the same frequency. A light-control panel at your home, for instance, may interfere with key fobs that have the same bandwidth. This could cause interference with the remote control of your car.
Faulty OBDII Scan Tool
There are a variety of reasons why scanners may not function. Some are more complicated than others.
Professional scan tools allow a mechanic to look over the car's networks and perform a variety of self-tests. These tools can save time, but they are costly and out of reach for most DIYers.
If your OBD2 scanner doesn't work, check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If they're all fine there is a chance that a fuse has blown. This is the most frequent reason for failure of the scan tool. It is generally simple to fix the issue by replacing the fuse blowing up.