Fiat Panda Key Fob Replacement
Fiat Panda key fobs contain a transponder chip that sends the signal to your vehicle to open the doors and start the engine. However, the fob may stop working for several reasons.
A dead coin battery is the most frequent cause of the malfunction of a key fob. Other causes include water damage an inoperative receiver module and signal interference.
Dead Coin Battery
If the battery in your key fob has gone out of service, the first step is to replace it. Use a new button cell battery with exactly the same size, voltage and specification as the old one.
If the key fob has been exposed to water, for example a splash of rain or salt water on the beach, it will need to be cleaned before it can be used again. The best way to do this is using a paper towel that has been soaked in isopropyl or an electronic cleaner.
If the key fob doesn't working despite not being exposed water, it could be due to a glitch in the receiver module or an internal electronic chip. Reprogramming the keyfob using an OBDII scan could aid in these situations.
Water Damage
You could have water damage if your key fob was submerged in a pool, puddle or washing machine. www.g28carkeys.co.uk is usually possible to get it working again by getting rid of the battery and scrubbing the circuit board with isopropyl alcohol. It is best to let the board completely dry before installing the battery.
If your key fob stopped working, even after replacing the battery and reconfiguring it, you may have a defective receiver module. You can find reprogramming instructions for most remote key fobs on YouTube or in your owner's guide. You can also reset the car's computer using the OBDII scanner tool.
Faulty Receiver Module
The key fob contains a chip that communicates with the car'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 stopped working after water exposure it is possible to fix the issue by cleaning the chip with isopropyl alcohol, or electronic cleaner.
If the key fob does not respond even after cleaning it it is likely that the module is defective and needs to be replaced. A damaged receiver can cause the key to not work. This is typically caused by electromagnetic interference.
A defective electronic chip
The electronic chip inside your key fob is a vital role in the anti-theft system of your vehicle. It sends a message to the immobiliser inside your car that tells it whether the key is genuine. If the chip is damaged or broken, your car will not start.
A defective chip can be caused by interference signals from other objects such as weather conditions, objects or transmitters on the same frequency close to your car. In this situation it is likely that a new fob would be needed.
Faulty battery contacts
The battery contacts inside the key fob are delicate and can get damaged when used for long periods of time. If they're bent or damaged, the fob will not send any signals to receiver modules in the vehicle.
Modern fobs are made with rubber seals to keep out water. A splash of water or a light rain should be fine but submerging them into saltwater can damage the chip's electronic components.
The key fob houses chips that communicate with the vehicle's immobilizer system in order to start it. This system makes use of cryptocoding systems in modern vehicles and the older red key system in older ones. This chip will have to be replaced if it's malfunctioning.
Poor 12 Volt Battery
A defective battery can cause the key fob not to work. The car's computer will not recognize the remote when this occurs.
Test the battery using the voltmeter before replacing it to determine its capacity. A fully charged battery should read 12.6 volts. If the reading drops dramatically the time is now to replace it.
To test the battery's power to determine its capacity, put an electric load on it for a couple of minutes. This will remove 1percent of the surface charges. Then, test the voltage once more. The longer the battery can hold its voltage and the higher its capacity. The ideal is to keep it close to 12 volts during several minutes.
Faulty Radio Signal
This is the main reason for a key fob to stop sending signals to vehicles. The battery is able to be replaced to resolve this issue. It is crucial to buy batteries that have the same dimensions and voltage as the original.
Fobs take a lot of abuse, but they're not impervious to destruction. The battery buttons and contacts are brittle which means they could be bent or broken by rough usage.
The signal could also be affected by other objects or transmitters which use the same frequency. For instance, a lighting control panel near your home may transmit interference on the same frequency as key fobs use. This could interfere with the remote control of your car.
Problems with OBDII Scan Tool
There are a number of reasons why a scanner may not work. Certain are more complicated than others.
Professional scan tools allow mechanics to observe the car's networks and perform a variety of self-tests. These are great time savers but they can also be very expensive, out of the budget of many DIYers.
If your OBD2 scanner won't turn on examine the voltage at terminal 16 (scan tool power) and terminal 4 (chassis ground). If all is fine it could be that a fuse has been blown. This is the most frequent cause of scan tool failure. It is typically easy to fix the problem by replacing the fuse blowing up.