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How to Fix a Key Fob That isn't Working
If your key fob won't work then you can fix it with some simple steps. The first step is to make sure that it's not your backup remote.
If your backup remote cannot unlock and lock the doors of your car, it is most likely that the primary remote isn't functioning. Most car remote key failures result from circuitry or battery problems.
Battery
The battery inside a key fob can be worn out over time. It is relatively easy to replace the battery, however it is important to ensure that you select the correct one that you can refer to your owner's manual or contact the dealer for the manufacturer to find out what kind of battery you need. It is also important to inspect the battery compartment, since batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the battery doesn't solve the issue there may be additional issues that require professional attention. If the buttons are broken or stuck, for example, it may be necessary disassemble the remote and rework each component. You could also try reprogramming the vehicle to recognize the new fob.
Buttons
Key fobs can get dirty and worn-out from repeated use. It is not uncommon for buttons to stop functioning, or require a hefty press to make them work. This can be a huge hassle particularly if you're away from home and need to start your vehicle. Fortunately, even worn out or broken buttons can usually be fixed with a little time and a few items you may already have around the home.
First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Then, open the remote with care and look over the circuit board. Look for evidence of rust, or other indications that the buttons have been worn or damaged. For example, conductive paint may be missing. Then, using the Q-tip, dipped in alcohol to gently clean any membrane contacts that have worn or where conductive paint is missing. Avoid rubbing too hard, because this could damage the conductive paint and stop the button from firing when it is it is pressed.
Also, carefully check the battery connector terminals for any loose solder connections. Soldering them back in place will allow the button to function again in the event that this is the case. The same process can be used to restore functionality to any other loose connections inside the fob.
If any of the rubber buttons located at the front of the keyfob aren't working or need to be press extremely hard the graphite disks at the back of the button could have worn out and need to replaced. This can be done by rubbing a pencil over the disks. This should bring the button back to working.
If key lock repair near me of this doesn't help, or if the button still does not respond to a hard push It could be because the circuit board has gone bad. It is possible to fix this issue by cleaning and re-soldering the fob, but you should have a spare in case it doesn't work.
Circuitry
The circuit board inside the remote control could be dirty regardless of whether the buttons on the key fob are working or not. This problem can be resolved through a thorough examination. Broken and damaged cases are the most frequent causes of dirty boards. A damaged case can allow water and other debris to enter the circuit board, which can cause it to short. electronic car key repair near me can also damage pins and vias, which are small connectors found on the board.
If you're able to open up your key fob, and you're not afraid of making a mess, we can de-solder the buttons and solder new ones in their place. Also, it's worth checking the connections between the battery terminals. They can get very 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 bring a non-working fob to working.
Non-Remote Transponder Chips
Sealed non-remote transponder chip are more durable than remote fobs that have them but they can be damaged by a hole that is drilled into them or run over by a lawnmower or car door handle. Fuse failures are usually to blame for non-remote chip failures.
If you're handy enough to remove a key fob that is sealed and are able to bear the mess, you can remove the circuit board and examine the fuse with a multimeter to ensure that it is functioning as intended. function. If you don't feel comfortable with this, you can visit your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob sends a signal.
Programming
Key fobs aren't indestructible and can be damaged by a variety of factors. They can lose their pairing to the receiver in your car due to shock or a low battery, requiring them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob and get it working again. If resetting or repairing the keyfob is not working it is possible to replace it.