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Reasons Your Fiat 500 Key Fob Won't Work

A key fob for Fiat 500 makes it easy to open doors and start your car. However, there are a variety of reasons why the key fob might stop working. This could be due to a dead coin battery, damage to the receiver module, water issues, and interference.

This listing is for a NEW replacement Fiat Flip Key Remote that appears similar to the Ilco brand. It must be professionally programmed (click here to search for local locksmiths in the automotive industry). Includes lock, unlock and trunk buttons.

Dead Coin Battery

The most frequent reason why your 500 key fob won't function is an inactive battery. Key fobs of today have only a limited range of operation and must be within just a few inches of the vehicle to function. If you're far from your vehicle and you 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, simply replace the battery of your coin cell (Part number CR2032) with a fresh one from a reliable brand like Panasonic, Duracell, or Energizer. They are usually available at your local hardware store, or online.

After you've replaced the coin cell battery It is possible to test it by standing close to your Fiat 500 and pressing the buttons. The parking lights will flash and the key fob will operate the lock and unlock switch.

If the key fob won't function after replacing the battery, it could have water damage that stops it from connecting to the receiver module in your car. Water damage can occur in a number of ways, from an accidental splash to submerging your fob in salt water at the beach. If you suspect that your fob has been exposed to water, you can place it in a rice bag to draw out the moisture. If this does not work, you'll need to have the fob reprogrammed either by an auto locksmith or a dealer.

Water Damage

Water damage can occur if you submerge the fob in the ocean, or wash it in a machine. Saltwater is particularly dangerous to the fob's circuit board which causes it to short out and eventually die. Getting the fob wet is not an ideal choice however, if you drop it in an empty cup of water, or forget to take it out of your pocket before you run the washing machine, don't give up hope.

First remove the battery from the fob. Clean the electronic chip using isopropyl alcohol or another similar product and then dry it thoroughly before replacing the battery. Check the fob again to verify if it's functioning. If the key does not function, it may need to be programmed again. This is typically done by a dealer or professional auto locksmith.

If the key is newer and was not programmed to your car It will most likely need to be replaced completely. A professional locksmith in the automotive industry can do this job. The locksmith needs to cut the key to match the ignition on your vehicle. The locksmith will also have to reprogram the fob into the car's system. This is a low-cost and fast process that can be completed on the same day.

Receiver Module Issues

Your 500 key fob might stop working because it is out of range. The remote usually has an operating range of 30 feet or less and if it's far away from your car it won't respond to your commands. It is possible to solve this problem by moving the remote closer to your vehicle until it responds.

If you've replaced the battery in your coin (commonly called a "button" or "watch") and your fob still won't work, it could have an internal circuit board issue. In the majority of cases, reprogramming your fob will resolve this issue. You can find directions on how to do this for the majority of automobiles by searching YouTube or consulting the owner's manual.

It may be necessary to replace the metal clips that hold the coin batteries in their place. If they lose tension it could prevent the coin battery from sitting properly and can cause the remote to malfunction.

In rare cases the fob might be out of alignment with your vehicle because of hardware or software issues. This can be a major issue, but you are able to usually resolve this issue by visiting an auto locksmith to reprogram your fob. In certain instances the software may require reinstallation in your body control modules.

G28 Car Keys can also cause the key fob to be unable to receive or transmit the signal. This could happen if the key fob is located near radio transmitters (cell phones or radar detectors) or another source of electromagnetic radiation. Other reasons the key fob may not function include a poor connection to the buttons or damage to the internal chip or water damage.

If the key fob has been unable to function for a while in the middle of the night or even after trying every option at home to solve it e.g. It could be a defective 500 receiver module after you've tried replacing the battery, reprogramming it, or using a spare key fob. The receiver module, which is located under the dashboard, receives radio frequency signals from your key fob. Then, it converts them into electronic commands that the vehicle interprets.

Fortunately, there's an easy method of resetting every single system on board in your 500 device, including the key fob. Disconnect the 12 volt battery for about 15 minutes by taking off the negative cable first then the positive cable. Reconnect the battery. This will clear any residual electricity, and restart the car's computer. This will help you get your key fob to work again. If the issue continues, you should speak with an expert technician. They will be able to identify the exact cause of any problems.