How to Fix a Key Fob That isn't Working

If your key fob isn't functioning There are a few simple steps that can fix it. First, make 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 likely that the main remote isn't working. The most common causes for car remote key failure are issues with the circuitry or battery.

Battery

It is not unusual for the battery in the key fob for cars to degrade. It is quite simple to change out a battery, although it is important to ensure you choose the correct type and you can consult your owner's manual or contact the dealer of the manufacturer to determine the type of battery you need. It is recommended to examine the battery compartment thoroughly because dead batteries can release caustic chemicals that could cause damage to the remote. If changing the batteries doesn't solve the problem, it may be that there are other issues that require professional attention. If the buttons are broken or stuck for instance, it may be necessary remove the remote and rebuild each component. It is also possible to reprogramme the vehicle to recognize the new fob.

Buttons

Key fobs can get filthy and worn out due to frequent use. It is not uncommon for buttons to cease working, or to require a hard press to get them working. This can be a huge hassle particularly if you're away from home and need to start your vehicle. Fortunately, even worn-out or damaged buttons can be fixed with a little time and a few materials you have in the house.

First, verify that the batteries are properly installed and that the indentation on the back of the button has been filled. Take the remote apart and inspect the circuit board. Look for signs of corrosion or other signs that the buttons are worn or damaged, such as missing paint that is conductive. Utilizing a Q-tip dipped in rubbing alcohol, gently clean any membrane contacts that are worn or have conductive paint missing. Do not rub too vigorously as this can damage the conductive paint and stop the button from firing when you press it.

Also, make sure to inspect the battery connector's terminals to ensure a loose solder connection. Soldering them back into place will allow the button to function again if this is the situation. You can use the same process to restore functionality to any other loose connection in the fob.

If any of the rubber buttons at the front of the keyfob are not working or require being pressing very hard the graphite disks on the back of the button might have worn out and require replacement. This can 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 cannot get the button to respond when pressed hard, it could be that the circuitry has failed. It is possible to fix this issue by cleaning and re-soldering the button, but you should have an extra in case it doesn't work.

key repair service near me of your remote control could be dirty, regardless of whether the buttons on the key fob are working or not. A thorough examination is usually enough to fix this problem. Water and broken cases are the most frequent causes of dirty boards. A damaged case could allow water and other debris to enter the circuit board, causing it to short out. Water can also eat away at pins and connectors that are small on the board, referred to as via's.

If you're handy enough to open your key fob and aren't afraid of making a mess, we can take off the buttons and solder new ones in their place. It's also worth looking at the battery terminal connections. They can become very dirty and if they're loose the buttons might not function or even stick in their down position. Soldering the terminals, and putting the button back in place is usually all it takes to restore keys that are not in working condition.

Non-Remote Transponder Chips


The non-remote chips sealed in a sealed case are more durable than their remote fobs, but they are susceptible to breaking if a hole is drilled in them or in the event that a door handle of a car or lawnmower runs over them. Fuse failures are usually to blame for non-remote chips failures.

If you're able to open up a key fob that is sealed and can tolerate the mess, you can remove the circuit board and test the fuse with an instrument to verify diode function. If you don't feel comfortable with this, go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob is sending signals.

Programming

Key fobs aren't indestructible and can be damaged through a variety of causes. They may lose their connection to the car's receiver because of shock or a low battery, which calls for them to be reprogrammed. A professional auto locksmith, or the main dealer can reprogram your key fob and get it back functioning again. If resetting or replacing your keyfob does not work it is possible to replace it.