Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder that transmits an indication from the fob to the car to open doors or turn on the motor. The fob may stop working for a variety.
A dead coin battery is the most common cause of a key fob malfunction. Other causes are water damage, a faulty module, and interference signals.
Dead Coin Battery
Replace the battery in case your key fob has failed. Use a new button cell battery that is exactly the same size, voltage, and specification as the original.
If the key fob was exposed to water, like a splash of rain or salt water on the beach, it will have to be cleaned before it can be used again. A paper towel soaked in alcohol or electronic cleaner will work wonders.
If the key fob doesn't working despite not being exposed to water it could be due to a malfunction in the receiver module or in the internal electronic chip. In these instances you can reprogramme the key fob with an OBDII scanner can aid.
Water Damage
If your key fob took immersed in a puddle or pool or even a trip to the washing machine, you could be suffering some water damage. It's usually possible to get it working by taking out the batteries and cleaning the circuit board using ruby alcohol. It's best to allow the fob to dry completely prior to installing a new battery.
There could be a problem with the module if your key fob stops working after replacing the battery or changing the programming. You can find the instructions for reprogramming most vehicles' remote keys on YouTube or refer to your owner's manual. You can 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 connects to the vehicle's system. This chip will stop sending and receiving signals to the car if it becomes damaged. This could be due to dropping the key fob or by water exposure. If the key fob is not working after exposure to water it may be possible to fix it by cleaning the chip with isopropyl ethanol or electronic cleaner.
If the key fob does not respond to cleaning, it is likely that the module is in an issue and should be replaced. A damaged receiver module may also cause the remote control key to cease functioning. This is often caused by electromagnetic interference.
Electronic chip that is malfunctioning
The electronic chip inside your key fob plays a vital function in the anti-theft security system of your car. It sends a message to the immobiliser inside your car to determine that the key is valid. If the chip is damaged or broken, the car won't start.
A faulty chip can also be caused by interference signals from other objects or weather conditions that are bad, or transmitters operating on the same frequency near your vehicle. In this scenario you'll need a new key fob.
Contacts to the battery are not working properly.
The battery contacts on a key fob are very fragile and are susceptible to damage through repeated use. If they're broken or bent, the fob won't send any signals to the receiver modules in the car.
Modern fobs feature rubber seals that keep out water. A splash of water or a light rain is acceptable but submerging them into saltwater could cause damage to the chip's electronic components.
thekeylab.co.uk contains the chip that connects to the vehicle's immobilizer to allow it to begin it. It uses the old red keys for older vehicles, or the crypto coding system in newer cars. If this chip is faulty, it will need to be replaced.
A faulty 12 Volt battery
A malfunctioning battery could cause the key fob to function. When this happens, the car's computer system will not recognize that the remote is inside the vehicle.
Test the battery with the help of a voltmeter to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops significantly then it's time to replace it.
To determine the capacity of a battery to determine its capacity, put an electric load on it for a couple of minutes. This will take off about 1 percent of the charge on the surface. Then take another measurement of the voltage. The longer a battery is able to hold its voltage more effectively, the greater its capacity. The ideal scenario is to keep it at or near 12 volts for several minutes.
Faulty Radio Signal
This is the most common reason for the key fob to stop sending signals to cars. The battery can be replaced to solve this issue. It is however important to select a replacement battery that has the same voltage and size as the original one.
Fobs endure a lot of abuse, but they're not indestructible. Contacts on batteries and buttons can be damaged through rough handling.
Other transmitters or objects operating on the same frequency may also disrupt the signal. For instance, a lighting control panel in your home could send interference on the same frequency as key fobs utilize. This could affect the remote control of your car.
Incorrect OBDII Scan Tool
There are many reasons scanners don't function. Some are more complex than others.
Professional scan tools allow a mechanic to look over the car's networks and perform a variety of self-tests. These are real time savers, however they can be expensive, and beyond the budget of 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 all fine the fuse could have ruptured. This is the main reason for a scan tool to fail. The most straightforward fix is to replace the fuse that is blowing up.