How to Fix a Key Fob That isn't Working

If your key fob won't work, you can fix it with some simple steps. The first step is to be sure that it's not the backup remote.

If your backup remote is unable to lock and unlock the doors of your car, then it is most likely that the primary remote is not working. The majority of car remote key malfunctions result from circuitry or battery issues.

Battery

It is not uncommon for the battery inside the car key fob to wear out. It is simple to replace a battery. However it is essential that you use the correct kind. You can check your owner's manual or call the manufacturer to inquire about the correct type. It is also a good idea to inspect the battery compartment carefully because dead batteries can leak caustic chemicals that can harm the remote. If changing the battery doesn't fix the problem there may be additional issues that require attention from a professional. For example, if buttons appear stuck or damaged, it may be necessary to take the remote apart and rework its components. It is also possible to reprogramme the vehicle to recognize the new fob.

Buttons

Key fobs can get filthy and worn out due to repeated use. This is not uncommon however it can cause buttons to stop working or require a long press to work. This can be frustrating especially when you're away from your home and need to start your car. Even malfunctioning or worn-out buttons can be fixed with a little effort and materials you already have at home.

First, make sure the batteries are up correctly and that the indentation on the back of the button is filled. Take the remote apart and inspect the circuit board. Look for signs of corrosion or other indications that buttons are worn out or damaged, like missing the conductive paint. Utilizing a Q-tip dipped in alcohol, gently clean any membrane contacts that have worn or have conductive paint missing. Avoid rubbing too hard, because this could damage the conductive paint and stop the button from firing when the button is pressed.

Also, make sure to inspect the battery connector terminals for any loose solder connections. If this is the case, reconnecting them could restore function to the button. The same process can be used to restore function to any other loose connections within the fob.

If, for instance, any of the buttons made of rubber that are on the front of the key fob stop working or require a very difficult press to function it is likely the graphite disks on the back of the button are wearing down and require replacement. This can usually be done by rubbing a pencil over the disks. This should bring the button back to working.

If none of these solutions work, or if you still are unable to get the button to respond when you press it hard, it is possible that the circuitry is failing. It is possible to fix the issue by cleaning and re-soldering your fob, but you should have another spare in case it does not work.

Circuitry

The circuit board inside your remote control may be dirty regardless of whether the buttons on the key fob function or not. This issue can be fixed through a thorough examination. The most common causes for dirty circuit boards are water and broken cases. A broken case allows water and other debris to get in and short circuit the electronic car key repair near me components. Water can also damage pins and connectors on the board, which are known as via's.

If you're able to open your key fob and aren't afraid of making some mess, we can take the buttons out of their sockets and solder in new ones. It's also worth checking the battery terminal connections. They can become extremely dirty and if they're loose, the buttons might not function or even stick in their down position. Soldering terminals and buttons back to their proper positions is usually enough to return a malfunctioning fob back to working.

Non-Remote Transponder Chips

The sealed non-remote chips are more durable than remote fobs, but they can be cracked in the event of a hole being drilled into them or in the event that a door handle of a car or lawnmower runs over them. Most of the time, non-remote transponder chip failures can be blamed on a blown fuse.

If you are not comfortable opening the key fob, you may take the circuit board off and use a multimeter to check that the diode is functioning properly. If you're not confident doing this, go to your local hardware store or the Oreilly's and they'll usually have a RFID frequency tester that can tell you whether the key fob sending a signal.

Programming

Key fobs take a lot of abuse and aren't impervious to damage. They can lose their pairing to the receiver in your car because of shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith, or the main dealer can reprogram your key Repair fob and get it back working again. If, in the unlikely event that resetting and fixing your key fob isn't working, it could be time to replace it completely.

좋아요 0