Reasons Your Fiat 500 Key Fob Won't Work

A key fob for fiat Punto remote key replacement 500 makes it simple to open doors and start your vehicle. There are a variety of reasons why the key fob might stop working. This includes a dead coin-battery water damage, problems with receiver modules, as well as interference.

This listing is for a NEW replacement Fiat Flip Key Remote - like the Ilco brand that must be professionally programmed by a local automotive locksmith (click here for Locksmith Search). Includes trunk, lock and unlock buttons.

Dead Coin Battery

The most common reason your 500 key fob won't function is the battery is dead. Modern key fobs have an operating range that is limited and must be within a few inches of your vehicle in order to function. If you're not close to your vehicle, and you press the key fob button the car will not respond, and will display a "Key Fob Not Detected" message in the instrument cluster.

If this happens, replace the coin cell battery (Part number CR2032) with a new one from a reliable brand such as Panasonic, Duracell, or Energizer. They are typically available in your local hardware store or on the internet.

After you've replaced the battery of your coin cell you can test it by standing next to your Fiat 500 and pressing the buttons. The car will blink its parking lights and the key fob should operate the lock and unlock switches.

If the key fob won't work after replacing the battery, it might be damaged by water that blocks it from connecting to the receiver module inside your car. Water damage can happen in many ways, including simply splashing or submerging the key fob into saltwater at the beach. If you suspect your fob was exposed to water, put it in a dry rice bag to pull the moisture back out. If that doesn't work your fob will probably need to be reset by a professional auto locksmith or the dealer.

Water Damage

Water damage can happen if you immerse the fob into the ocean or wash it in a machine. Saltwater is especially dangerous to the circuit board of the fob and can cause it to short out and eventually die. It's not good to get the fob wet, but don't give it up even if you accidentally drop the fob in water or fail to take it out of your pocket.

First, remove the battery. Clean the electronic chip with isopropyl ethanol or a similar product and then dry it completely before replacing the battery. Test the fob afterward to verify if it's functioning. If the fob doesn't work, it may have to be reprogrammed. This is usually done by an auto locksmith or dealer.

If the key is older and hasn't been programmed to your car it is likely to need to be replaced completely. This is a simple process that can be carried out by a professional automotive locksmith. The locksmith will require the key to be cut to match your vehicle's ignition. The locksmith also needs to reprogram your fob in the vehicle's system. This is a quick and cost-effective procedure that can be completed on the next day.

Receiver Module Issues

The 500 key fob could be inoperable because it's out of range. The remote usually has 30 feet of range or less and if it's far from your car, it will not respond to your commands. You can easily solve this issue by moving the remote closer to your car until it responds.

If you've replaced the battery in your coin (commonly called a "button" or "watch") and the fob won't work, it could have an internal circuit board issue. In the majority of cases, reprogramming your fob will fix the issue. You can find the steps for the majority of vehicles on YouTube or in the owner's manual.

It is possible to replace the metal clips that hold the coin battery in place. If they loose tension it could hinder the battery from being properly seated, and this will cause your remote to malfunction.

In rare instances the fob might become desync'd with your vehicle due to software problems or hardware issues. This issue can be fixed by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain situations they may have to install the software again in your body control module as well.

Interference

Interference can also cause the key fob to not be able to receive or transmit signals. This could happen if the key fob is near the radio transmitter (cell phones and radar detectors) or another source of electromagnetic radiation. The key fob may not function due to a poor connection with the buttons water damage or damage to the internal chips.

If your key fob suddenly stopped working, or if you've tried everything at home to solve the issue (e.g. It could be a defective 500 receiver module in the event that you've tried replacing the battery, reprogramming or using an alternative key fob. The receiver module, located beneath the dashboard, receives radio frequency signals from your key fob. It transforms the signals into electronic commands that are then read by the vehicle.

Luckily, there is an easy way to reset all on-board systems in your 500 device, including the key fob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Then, reconnect the battery. This will eliminate any remaining electrical charge, and then restart the computer of your car. This could help you get your spare key for fiat 500 fob to work again. If the issue persists, you should speak with an expert technician. They can identify the exact cause of any problems.