Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain a transponder chip which sends an alert to your car to unlock the doors or start the engine. However, the fob may stop working for several reasons.
The most common reason for key fob failure is an inoperable coin battery. Other reasons include water damage, malfunctioning receiver modules, and signal interference.
Dead Coin Battery
Replace the battery if your key fob is dead. Make use of a new button battery that is exactly the same size, voltage and specification 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 best method is to use a paper towel that has been soaked in isopropyl, or electronic cleaner.
If the key fob is not working even though it is not exposed to water, it could be due to a problem in the receiver module, or even in the internal electronic chip. Reprogramming the keyfob using an OBDII scan could assist in these situations.
Water Damage
You might have water damage to your key fob if it was submerged in a pool, puddle or washing machine. It's possible to get it back in working order by taking out the batteries and cleaning the circuit board using ruby alcohol. It's best to let the fob dry completely before installing a new battery.
You may have a faulty module if your key fob stops working after replacing the battery or reprogramming. There are fiat 500 key cover for the reprogramming of most remote keys on YouTube or in the owner's manual. You could also try resetting the car's onboard computer by using the OBDII scan tool.
Faulty Receiver Module
The key fob contains the chip that communicates with the vehicle's system. If this chip becomes damaged, it can no longer send and receive signals to the vehicle. This can be caused by dropping the key fob, or by water exposure. If your key fob stopped functioning due to water exposure, you may be able to fix it if clean the chip using electronic cleaner or isopropyl alcohol.
However, if the key fob is still unable to not respond even after cleaning it it is likely that the component is damaged and must be replaced. A malfunctioning receiver could cause the key to not work. This is usually caused by electromagnetic interference.
A malfunctioning electronic chip
The electronic chip in the key fob is a vital component of the anti-theft systems in your car. It sends a signal to the immobiliser device in your car to inform it whether or not the key is genuine. If the chip is damaged or broken, your car will not start.
A faulty chip may also be caused by interference from other objects, weather conditions or transmitters close to your vehicle. In this case you'll need a new key fob.
Contacts for the battery that are defective
The battery contacts on the key fob could be damaged through heavy use. If they are bent or broken the fob will not be able to send any signals to the receiver modules inside the car.
Modern fobs come with rubber seals in order to keep out water. A splash of water or a light rain is acceptable, but submerging them in saltwater can cause damage to the electronic chip.
The key fob has an electronic chip that communicates with the vehicle's immobilizer system in order to allow it to start. The system utilizes the old red keys in older vehicles as well as the crypto coding system in modern vehicles. If the chip is damaged, it will need to be replaced.
A faulty 12 Volt battery
A malfunctioning battery could cause the key fob to function. When this occurs the car's computer cannot recognize that the remote is in the vehicle.
Before replacing the battery, test it by using a the voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading decreases significantly it's time to change it.
Install an electrical charge for a few seconds on the battery to test its capacity. This will remove 1% of the surface charges. Then measure the voltage again. The longer the battery is able to hold its voltage more effectively, the greater its capacity. The ideal scenario is to keep it at 12 volts or less for several minutes.
The radio signal is not working properly. Radio Signal
This is the most typical cause of a key fob that stops sending signals to the car. This issue can be resolved by replacing the battery. However, it is important to choose a battery that has the same size and voltage as the original.
Fobs aren't indestructible and can be damaged by a lot. The battery buttons and contacts are brittle and can be bent or broken with the force of.
Other transmitters or objects operating on the same frequency may also interfere with a signal. A light-control panel at your home, for instance, may interfere with key fobs which use the same bandwidth. This could interfere with your car's remote control.
Problems with OBDII Scan Tool
There are a variety of reasons why a scanner tool may not work. Some are more complex than others.
Professional scan tools enable a mechanic observe the car's networks and run various self-tests. These are great time-savers, but they're also expensive, and beyond the budget of many DIYers.
If your OBD2 scanner isn't turning on examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If they are all OK the fuse could have blown. This is among the most frequent reasons for failure of the scanner. It is usually easy to fix the problem by replacing the fuse blowing up.