Reasons Your Fiat 500 Key Fob Won't Work
A fiat 500 key fob is a great way to unlock the doors and start the car. There are many reasons why the fob could stop working. This could be due to a dead coin-battery or water damage, receiver modules issues, and interference.
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Dead Coin Battery
The most frequent reason why your 500 key fob won't work is a dead battery. Modern key fobs have a limited operating range, and should be within just a few feet of the vehicle to function. If you're far away from your vehicle and press the key fob button the car won't respond, and will display the "Key Fob Not Detected" message in the instrument cluster.
If this happens, replace the battery of your coin cell (Part number CR2032) by a new one from a reputable manufacturer like Panasonic, Duracell, or Energizer. They can be found in your local hardware store or online.
You can test the coin-cell battery by pressing the buttons while standing close to your Fiat 500. The car will flash its parking lights, and the key fob will operate the lock and unlock switches.
If the fob's key doesn't work after replacing the battery, it might have water damage that prevents it from communicating with the receiver module in your vehicle. Water damage can happen in many ways, such as an easy splash or submerging the key fob in saltwater at the beach. If you think your fob was exposed to water, place it in a rice bag to draw out the moisture. If that doesn't work, the fob might require reprogramming by an experienced locksmith or dealer.
Water Damage
Damage to the water supply can occur if you immerse the fob into the ocean or wash it in a washing machine. fiat punto key can be particularly harmful to the circuit board of the fob that can cause it to short out and eventually end up dying. It's not the best idea to soak the fob in water but don't give up even if you accidentally drop the fob in the water or don't remove it from your pocket.
First, remove the battery from the fob. Clean the electronic chip using isopropyl alcohol or another similar product and dry it thoroughly before replacing the battery. Then check the fob to verify if it is working. If the fob doesn't work, it may have to be reprogrammed. This is typically handled by a dealer or professional auto locksmith.
If the key you have is older and not programmed for your car, you will need to replace it completely. A professional locksmith in the automotive industry can complete this simple process. The locksmith will require the key to be cut to match your vehicle's ignition. They'll also need to program the fob into the system of your car. This is a simple and inexpensive process that can be completed in the same day.
Receiver Module Issues
One of the simplest reasons your 500 key fob won't be functioning is that it's out of range. The remote's range is of 30 feet. Therefore, if you are too far away from your vehicle, it won't respond to your commands. It is possible to solve this issue by moving the remote closer to your vehicle until it responds.
If you've replaced your coin battery (commonly called a "button" or "watch") and your fob still won't work, it could have an internal circuit board issue. Reprogramming the fob usually resolves this problem. There are instructions on how to do this for all vehicles by searching YouTube or reading the owner's manual.
It is possible to replace the metal retaining clips that keep the coin battery. If they loose tension, it may prevent your battery from sitting properly, causing your remote to malfunction.
In rare instances, the fob might be out of the vehicle's sync because of hardware or software problems. It is possible to fix this issue by visiting your local auto-locksmith or dealer to reprogram your key fob. In certain instances the software may require reinstallation in your body control modules.
Interference
In addition to a dead battery on a coin The key fob might not be able to transmit or receive signals due to interference. This can happen when the key fob is located near radio transmitters (cell phones or radar detectors) or another source of electromagnetic radiation. The key fob may not work because of a problem with the buttons or water damage, or damage to the internal chips.
If your key fob suddenly stopped working, or you've tried everything at home to fix it (e.g. battery replacement, reprogramming and using the spare key fob, it could have a faulty receiver module on your 500. The receiver module, located beneath the dashboard, receives radio frequency signals from your key fob. It then converts them into electronic commands that the vehicle interprets.
Fortunately, there's an easy method to reset all on-board systems in your 500 and include the key fob. Disconnect the battery for 15 minutes by taking off first the negative cable and then the positive cable. Then, reconnect the battery. This will eliminate any residual electricity and restart the car's computer system, which could allow you to get your key fob working again. If the issue persists it is recommended that you consult an expert technician. They'll be able diagnose the exact cause of your problem.