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How to Fix a Key Fob That isn't Working
If your key fob doesn't work There are a few simple steps that can fix it. The first step is to make sure that it's not your backup remote.
If your backup remote is unable to unlock and lock the doors of your car, then it is likely that the primary remote isn't working. The majority of car remote key malfunctions result from battery or circuitry problems.
Battery
The battery inside the key fob may get worn out over the course of time. It is simple to replace a battery. However it is crucial to select the right kind. You can refer to the owner's manual or contact the manufacturer to inquire about the right type. It is also a good idea to examine the battery compartment with care, as dead batteries sometimes leak caustic chemicals that can harm the remote. If changing the batteries does not solve the problem, it may be that there are other issues that require attention by a professional. For instance, if the buttons appear stuck or damaged It may be necessary to take the remote apart and rework its components. You could also try reprogramming the vehicle to recognize the new device.
Buttons
Through frequent use, key fobs can wear out and become dirty. This is not uncommon however, it can cause buttons to stop functioning or require a hard press for them to work. This can be very frustrating particularly when you're away from home and need to start your car. Fortunately, even worn out or broken buttons can usually be fixed with a bit of time and some of the materials you may already have around the house.
First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Examine for indications of rust or other signs the buttons are damaged or worn. For instance there could be conductive paint missing. Use a Q-tip dipped into alcohol to gently clean any membrane contact that is worn out or where conductive painting is missing. Avoid rubbing too hard, as this can erode the conductive painting and prevent the button firing when pressed.
Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, soldering them back in place may restore function to the button. The same process can be used to restore function to any loose connections inside the fob.
If, for instance, any of the rubber buttons on the front of the key fob have stopped working or require a difficult press to function it is likely that the graphite disks at the back of the button are wearing out and need to be replaced. You can usually do this by rubbing a pencil 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 pressed hard, it is possible that the circuitry is failing. This can sometimes be repaired by a quick clean, and re-soldering, but it is ideal to have a spare fob on hand in the event that this method does not work for you.
Circuitry
The circuit board inside the remote control could be dirty, regardless of whether the buttons on the key fob work or not. A very thorough inspection will usually resolve this problem. The most common causes of dirty circuit boards is water and broken cases. A damaged case allows water and other debris to pass through and short circuit the electronics. Water can also damage pins and connectors on the board, which are known as via's.
If you're skilled enough to open your key fob, and don't mind making some mess, we can take the buttons out of their sockets and put in new ones. It's also worth checking the battery terminal connections. If they're loose, the buttons might not function or get stuck in their down position. Soldering the terminals back to their proper positions is usually enough to bring a non-working fob to working.
car key fob repairs near me -Remote Transponder Chips
Sealed non-remote transponder chip are more durable than remote fobs they are contained in, but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers blade or car door handle. Failures of the fuse are typically to blame for non-remote chip failures.
If you are not comfortable opening the key fob, you may remove the circuitboard and utilize a multimeter to verify that the diode is working properly. If you're not comfortable with this, you can go to your local Oreilly or hardware store and utilize their RF frequency tester. This will inform you whether the key fob transmits a signal.
Programming
Key fobs aren't indestructible and are susceptible to damage through a variety of causes. They can lose their pairing to the car's receiver because of shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith, or a dealer in the main, can reprogram your keyfob and get it functioning again. If resetting or repairing your keyfob does not work it may be necessary to replace it.
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