Reasons Your Fiat 500 Key Fob Won't Work
A key fob from Fiat 500 makes it easy to open doors and start your car. There are many reasons the fob won't work. This could be due to a dead coin-battery water damage, problems with receiver modules, as well as interference.
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Dead Coin Battery
The most common reason the 500 key fob won't function is due to the battery is dead. Key fobs of today have a limited range of operation and must be within a few inches of your vehicle to work. If you're far from your vehicle and press the key fob button, the car won't be able to respond, and will display an "Key Fob Not Detected" message in the instrument cluster.
If this happens, simply replace the battery on your coin cell (Part number CR2032) with a fresh one from a reliable brand such as Panasonic, Duracell, or Energizer. You can usually find them at your local hardware store, or online.
You can test the battery of your coin-cell by pressing the buttons while you are standing close to your Fiat 500. The parking lights will flash and the key fob will operate the lock and unlock switches.
If the fob's remote doesn't function after replacing the battery, it may be damaged by water that blocks it from communicating with the receiver module in your vehicle. Water damage can occur through a variety of methods, including simply splashing or submerging the key fob into saltwater at the beach. If you suspect that your fob was exposed to water, put it in a rice bag to draw out the moisture. If that doesn't work, your fob is likely to need to be reset by a professional locksmith or dealer.
Water Damage
Damage to the water supply can occur if you immerse the fob in the ocean or wash it in a washer. Saltwater can cause the circuit board to short and eventually cease to function. It's not a good thing to soak the fob in water, but don't give it up if you accidentally drop it in the water or don't take it out of your pocket.
Remove the battery first. Before replacing the battery clean the electronic chip with isopropyl or a similar product. Then, test the fob to check if it functions. If the key still doesn't function, it may need to be changed. This is usually done by a professional or dealer auto locksmith.
If the key is newer and was not programmed to your car It is likely that it needs to be replaced completely. A professional locksmith for automotive can complete this simple process. The locksmith will have to cut the key to match the ignition of your car. They'll also need to reprogram the fob in the car's system. This is a cheap and quick procedure that can be completed the same day.
Receiver Module Issues
Your 500 key fob might 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 vehicle, it won't respond to your commands. You can remedy this by moving your remote closer to your car until it responds.
If you've replaced your coin battery (commonly known as a "button" or "watch") and the fob isn't working It could be because of an internal circuit board problem. Reprogramming the fob is usually the solution to this issue. There are instructions on how to do this for the majority of vehicles by searching YouTube or looking through the owner's manual.
You may have to replace the metal clips that keep the battery of your coin in place. If they loose tension, it may prevent your battery from sitting properly, causing your remote to malfunction.
In rare instances, the fob can become out of the vehicle's sync because of hardware or software issues. This could cause a significant problem, but you can frequently fix this issue by visiting an auto locksmith to reprogram your fob for you. In certain instances the software might require reinstallation to your body control modules.
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 located near an electronic radio transmitter (cell phones, radar detectors) or another source of electromagnetic radiation. The key fob could not function because of a problem with the buttons water damage or damage to the internal chips.
If your key fob suddenly stopped working, or you've tried everything at home to solve the issue (e.g. replacing the battery, reprogramming, and using the spare key fob, you might have a defective receiver module on your 500. The receiver module is located under the dash and is able to pick up the radio frequency signals from the key fob. It transforms the signals into electronic commands, which are then read by the vehicle.
Fortunately, there's an easy method of resetting all of the on-board systems in your 500 and include 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 get rid of any residual electricity and restart the car's computers. This can help you get your key fob working again. If the issue persists, you should consult a certified technician. conversational tone 'll be able determine the root of your issue.