How to Fix a Key Fob That isn't Working
If your key fob won't work and you're not sure why, 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 can lock and unlock the doors of your car, then it is most likely that the primary remote isn't working. Most problems with car remote keys result from circuitry or battery problems.
Battery
The battery in the key fob may be worn out over time. It is quite simple to change out batteries, but it is essential to ensure that you use the right type that you can refer to your owner's manual or contact the dealer for the manufacturer to determine the type of battery you need. It is also a good idea to examine the battery compartment thoroughly because dead batteries can leak caustic chemicals that can cause damage to the remote. If replacing the battery does not fix the issue there may be additional issues that require professional attention. For instance, if buttons appear stuck or broken, it may be necessary to take the remote apart and rebuild its components. You could also try reprogramming the vehicle to recognize the new key fob.
Buttons
Key fobs can get filthy and worn out due to frequent use. This is not uncommon however, it can cause buttons to cease functioning or require a long press to work. This can be extremely frustrating particularly if you're out of town and need to start your car. Even broken or damaged buttons are often fixable with a little time and tools you already have at home.
First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Take the remote apart and inspect the circuit board. Check for signs of corrosion or other signs that buttons are worn out or damaged, such as missing paint that is conductive. Use a Q-tip that has been dipped in rubbing alcohol to gently clean any membrane contact that is worn-out or where conductive paint is missing. Do not rub just click the up coming page in order to damage the conductive paint, and block the button from firing when you press it.
Examine the battery connector's terminals for loose solder connections. If this is the case, simply soldering them back in place can restore functionality to the button. You can apply the same method to restore functionality to any other loose connection within the fob.
If any of the rubber buttons located at the front of the keyfob are not functioning or require to be press very hard the graphite disks on the back of the button might have worn out and will need to replaced. You can do this by rubbing a pen over the disks. This should bring the button back to life.
If none of these solutions work, or if you still not be able to get the button 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 however, you should have an extra in case it doesn't work.
Circuitry
The circuit board of your remote control could be dirty regardless of whether the buttons on the key fob are working or not. A thorough inspection is usually enough to fix this problem. The most common causes for dirty circuit boards are water and broken cases. A broken case allows water and other debris to pass through and short circuit the electronics. Water can also eat through pins and vias, which are tiny connectors found on the board.
If you're handy enough to remove your key fob and don't mind making a mess, we can de-solder the buttons and put new ones in their place. It's also worth checking the connections between the battery terminals. They can get very filthy and if they're not tight enough, the buttons might not work or even stick in their down position. Soldering the terminals back into place is usually enough to restore a non-working fob to a working condition.
Non-Remote transponder chips
The sealed non-remote chips are more durable than remote fobs. However, they are susceptible to breaking when a hole is made into them or when a door handle for a car or lawnmowers plows over them. The failure of the fuse is usually to blame for non-remote chip failures.
If you're able to open up a key fob that is sealed and are able to bear the mess, you can take off the circuit board and test the fuse with an instrument to verify diode function. If you're not sure with this, visit your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob sends an RF signal.
Programming
Key fobs are subject to a lot of abuse and aren't indestructible. They may lose their connection to the receiver in your car due to shock or a low battery, which calls for them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob to get it working again. In just click the up coming page that resetting or repairing your key fob isn't working, it could be time to replace it all over again.