fiat 500 key fob replacement Panda Key Fob replacement fiat 500 key fob

Fiat 500 New Key Panda key fobs contain a transponder chip that sends an alert to your car to open the doors or start the engine. However, the fob may be inoperable due to various reasons.

The most frequent cause of key fob malfunction is a dead coin battery. Other causes are water damage, a faulty receiver module, and signal interference.

Dead Coin Battery

If your key fob's battery is dead, the first step is to replace it. Use a new button cell battery with exactly the same size, voltage and specifications as the old one.

If the key fob was exposed to water (such as saltwater or rain at the beach) it should be cleaned prior to being used again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner will work wonders.

If the key fob is not working even though it is not exposed to water it could be due a malfunction in the receiver module or an internal electronic chip. In these situations you can reprogramme the key fob using an OBDII scanner may aid.

Water Damage

If your key fob's battery has taken an immersion in the puddle or pool or gone to the washing machine, you could be suffering some water damage. You can usually get it back to working by taking off the battery and then scrubbing the circuit board with isopropyl alcohol. It's a good idea let the fob dry completely before putting in a brand new battery.

You could have a damaged module in the event that your key fob stops working after replacing the battery or reprogramming. Reprogramming instructions are available for the majority of vehicles' remote key fobs on YouTube or in your owner's guide. You can also reset the computer in your car with the OBDII scanner tool.

Faulty Receiver Module

The key fob contains a chip which communicates with the vehicle's system. This chip will stop sending and receiving signals to the car when it is damaged. A key fob falling off can result in this, as can water exposure. If your key fob stopped functioning due to exposure to water or water exposure, you might be able to fix it by attempting to clean the chip with electronic cleaner or isopropyl alcohol.

However, if the key fob does not respond after cleaning it, it is likely that the module is defective and must be replaced. A malfunctioning receiver could cause the key to stop working. This is usually caused by electromagnetic interference.

A malfunctioning electronic chip

The electronic chip in your key fob is a vital element of the anti-theft device in your car. It transmits a message the immobiliser inside your car to tell it that the key is valid. If the chip is damaged or broken, your vehicle will not start.

A defective chip could be caused by interference from objects, bad weather or transmitters in the vicinity of your vehicle. In this scenario it is likely that a new fob would be needed.

Contacts to the battery are not working properly.

The battery contacts on the key fob are fragile and are susceptible to damage with hard usage. If they are damaged or bent, the key fob will not be able to send any signals to the receiver modules in the car.

Modern fobs have rubber seals that block out water. Submerging them in water, even if it is just an occasional drizzle or splash, can damage the chip's electronic circuit.

The key fob has a chip that communicates with the vehicle's immobilizer to allow it to activate it. The system relies on cryptocoding systems in newer vehicles and the older red key system used in older models. If the chip is not working properly it must be replaced.

Faulty 12 Volt Battery

A defective battery can cause the key fob not to work. When this happens the car's computer cannot recognize that the remote is inside the vehicle.

Before you replace 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 is time to replace the battery.

Put an electrical load for a short time on the battery to gauge its capacity. This will take away approximately 1 percent of the surface charge. After that, measure the voltage. The better the battery's capacity, the longer it can maintain its voltage. 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 common reason for keys not sending signals to vehicles. This problem can be solved by replacing the battery. It is essential to purchase a battery with the same voltage and dimensions as the original.

Fobs take a lot of abuse, but they're not impervious to destruction. Contacts on batteries and buttons can be damaged through rough handling.

The signal could also be interrupted by other transmitters or objects that use the same frequency. For instance, a lighting control panel that is near your home could transmit interference on the same frequency that key fobs use. This can affect the remote control of your car.

Problems with OBDII Scan Tool

There are many reasons a scanner tool may not function. Some are more complicated than others.

Professional scan tools let a mechanic observe the car's network, and run various self-tests. These can be real time-savers, but they can be expensive, out of the budget of many DIYers.

If your OBD2 scanner won't start, check the voltage on terminal 16 (scan tool power) and terminal 4 (chassis ground). If both are in good condition the fuse could have been blown. This is one of the most frequent causes of failures in the scan tool. The easiest fix is to replace the fuse which has blown.