Reasons Your Fiat 500 Key Fob Won't Work
A Fiat 500 key fob makes it easy to open doors and start your vehicle. However, there are many reasons the fob could stop functioning. This could be due to a dead coin battery, water damage, receiver module issues, and interference.
This listing is for an NEW replacement Fiat Flip Key Remote that looks like the Ilco brand. It has to be professionally programmed (click here to find local locksmiths in the automotive industry). Includes trunk, lock and unlock buttons.
Dead Coin Battery
The most frequent reason that your 500 key fob won't function is due to the battery is dead. Modern key fobs only have only a limited range of operation and must be within only a few inches from the vehicle to function. If you're not close to your vehicle and press the key fob button, the car won't 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) by a new one from a reputable manufacturer such as Panasonic, Duracell, or Energizer. You can find them in your local hardware store, or online.
You can test the battery in the coin-cell by pressing the buttons while you're standing close to your Fiat 500. The parking lights will flash and the key fob should operate the lock and unlock switches.
If the fob's key doesn't work after replacing the battery, it could have water damage that prevents it from communicating with the receiver module inside your car. Water damage can occur in a variety of ways, from small splashes to submerging your fob in salt water at the beach. If you suspect that your fob was exposed to water, try placing it in a dry rice bag to draw the moisture out. If this doesn't work, you will require your fob to be replaced by an auto locksmith or a dealer.
Water Damage
Water damage can occur when you submerge the fob in the ocean, or wash it in a washer. Saltwater is especially dangerous to the fob's circuit board that can cause it to short out and eventually die. It's not a good thing to let the fob get wet however, but don't give it up when you accidentally drop it in the water or don't remove it from your pants pocket.
Take the battery off first. Clean the electronic chip with isopropyl or a similar product and then dry it thoroughly before replacing the battery. Test the fob next to verify if it's functioning. If the key still doesn't work, it may need to be reprogrammed. This is usually handled by an auto locksmith or dealer.
If the key you have is older and not programmed for your car You will need to replace it completely. This is a simple procedure that can be handled by a professional locksmith for automotive use. The locksmith will require the key cut to match your vehicle's ignition. The locksmith also needs to reprogram your fob in the car's system. This is a cheap and quick procedure that can be completed within the same day.
Receiver Module Issues
One of the most common reasons your 500 key fob might stop functioning is that it's out of range. The remote has a range of 30 feet, so if you are too far from your car, it won't respond to your commands. It is possible to fix this by moving the remote closer to your vehicle until it responds.
If your fob doesn't work after you replace the battery for the coin, also known as a "button", "watch" or "button", it could be a problem with the internal circuit board. In most cases, reprogramming the fob can resolve the issue. You can find directions on how to do this for all automobiles by searching YouTube or consulting the owner's manual.
You may have to replace the metal retaining clips that hold the coin battery in place. If they lose tension, it could hinder the battery from being properly seated and could cause the remote to malfunction.
In rare instances, the fob can become out of connection with your vehicle as a result of hardware or software problems. This issue can be fixed by visiting your local dealer or auto-locksmith to reprogram your key fob. In some cases, the software may also require reinstallation in your body control modules.
Interference
Interference can also cause the key fob to be unable to receive or transmit signals. This could occur if the keyfob is located in close proximity to a radio transmitter, like a cellphone or radar detector. Other reasons why the key fob might not work include a poor connection to the buttons and internal chip , or water damage.
If the key fob failed to work one day without notice or even after trying everything you can do at home to solve it e.g. It could be a defective 500 receiver module If you've tried replacing it with a battery, reprogramming or using an alternative key fob. The receiver module is situated under the dash and receives the radio frequency signals from the key fob. It converts the signals into electronic commands, which are then interpreted by the vehicle.
There's a simple method to reset the 500's internal system including the keyfob. Disconnect the battery for 15 minutes by removing first the negative cable, then the positive cable. Then reconnect the battery. This will clear any residual electricity, and restart the car's computer. This can help get your key fob working again. If the problem persists you should speak with a certified technician. They will be able diagnose the root cause of any issues.