How to Fix a Key Fob That isn't Working

If your key fob does not work then you can fix it with just a few steps. The first step is to be sure it's not the backup remote.

If your backup remote cannot lock and unlock the doors of your car, it is most likely that the primary remote isn't functioning. The majority of car remote key malfunctions are caused by circuitry or battery problems.

Battery

The battery inside the key fob could wear out over time. It is quite simple to change out a battery, although it is essential to make sure that you use the right type and you can consult your owner's manual or ignition key repair near me contact the dealer of the manufacturer to find out the kind of battery you need. It is also essential to inspect the battery compartment, since batteries that are not working properly can release caustic chemicals that can harm the remote. If replacing the batteries doesn't solve the problem it could be because there are other issues that require professional attention. If buttons are stuck or broken, for example it might be necessary to remove the remote and rebuild each component. You could also try reprogramming the vehicle to recognize the new key fob.

Buttons

Key fobs may become dirty and worn out from frequent use. It is not unusual for buttons to stop working, or to require a hard push to make them work. This can be a huge hassle especially if you're away from home and need to start your car remote key repair. Fortunately, even worn-out or malfunctioning buttons can often be fixed with a little time and a few materials you might already have in the home.

First, make sure the batteries are properly charged and that the indentation on the back of the button is filled. Then, open the remote with care and examine the circuit board. Look for signs of corrosion or other indications that the buttons are worn out or damaged, like missing conductive paint. Use a Q-tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that have damaged or have conductive paint missing. Avoid rubbing too hard since this could cause damage to the conductive paint and block the button from firing when it is it is pressed.

Also, carefully check the battery connector's terminals for a loose solder connection. Soldering them back in place will restore the button's functionality if this is the situation. You can follow the same procedure to restore functionality to any other loose connection in the fob.

If any of the rubber buttons on the front of the keyfob aren't working or need to be pressing very hard the graphite disks on the back of the button may have worn out and will require replacement. This is usually done by rubbing a pencil over the disks, which will bring the button back to working.

If none of these solutions work, or if you still cannot get the button to respond when you press it hard, it is possible that the circuitry is failing. It is possible to fix this by cleaning and re-soldering the fob however, you should have another spare in case it doesn't work.

Circuitry

If the keys fob buttons are functioning, the circuit board inside your remote might be dirty. The issue can be solved through a thorough examination. Broken cases and water are the most common causes of boards that are dirty. A broken case allows water and other debris to enter and short out the electronic components. Water can also damage pins and vias, which are tiny connectors on the board.

If you're able to open your key fob and don't mind making a mess, we can take the buttons out of their sockets and put in new ones. It's also worth examining the battery terminal connections. They can get very dirty and if they're loose the buttons might not work 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 non-remote chips that are sealed are more durable than their remote fobs, but they are susceptible to cracking if a hole is drilled in them or if a car door handle or lawnmowers plows over them. Most of the time non-remote transponder chips fail, and this can be blamed on blowing fuses.

If you're able to remove a key fob that is sealed and are willing to put up with the mess, you can remove the circuit board and check the fuse using an instrument to verify diode function. If you're not comfortable doing this, go to your local hardware store or Oreilly's, and they will usually have an RF frequency tester that will determine whether the ignition key repair near me fob is sending a signal.

Programming

Key fobs take many abuses 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 calls for them to be reprogrammed. A professional auto locksmith or a main dealer can reprogram your key fob to get it functioning again. If resetting or replacing the keyfob is not working it may be necessary to replace it.