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how to repair car key fob to Fix a Key Fob That isn't Working

If your key fob won't work, 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 unlock and lock the doors of your vehicle, it is likely that the primary Remote key repair is not working. Most car remote key failures are caused by circuitry or battery issues.

Battery

The battery in the key fob may get worn out over the course of time. It is quite simple to change out batteries, but it is essential to ensure that you choose the correct type; you can look in your owner's manual or contact the manufacturer's dealer to find out the kind of battery you require. It's recommended to inspect the battery compartment thoroughly since dead batteries may leak harmful chemicals that can cause damage to the remote. If changing the batteries does not solve the issue it could be because there are other issues that require professional attention. For instance, if the buttons appear stuck or damaged It may be necessary to disassemble the remote and rework its parts. You could also try reprogramming the vehicle to recognize the new key fob.

Buttons

Key fobs can become filthy and worn out due to repeated use. It is not unusual for buttons to stop working, or to require a hefty press to make them work. This can be a hassle especially when you're away from home and need to start your car. Even broken or damaged buttons are often fixable with a little effort and tools you already have at home.

First, check that the batteries are charged correctly and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Check for signs of rust or other indications that the buttons are damaged or worn out. For example the paint that conducts electricity could be missing. Use a Q-tip dipped into alcohol to gently clean any membrane contact that has worn out or where conductive paint is missing. Do not rub too vigorously as this can damage the conductive paint and stop the button from firing when pressed.

Examine the battery connector's terminals for loose solder connections. If this is the case, reconnecting them may restore functionality to the button. You can follow the same procedure to restore functionality to any other loose connection inside the fob.

In the end, if 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. This can usually be done by rubbing a pencil on the disks, which will bring the button back to life.

If none of this is helpful or if the button doesn't respond to a firm press It could be that the circuit board is damaged. It is possible to fix the issue by cleaning and re-soldering your fob however, you should have a spare in case it does not work.

Circuitry

The circuit board inside your remote control may be dirty regardless of whether the buttons on the key fob are working or not. A thorough examination will usually resolve this problem. Water and broken cases are the most frequent causes of boards that are dirty. A damaged case could allow water and other debris to enter the circuit board, causing it to short. Water can also damage pins and vias, which are small connectors that are found on the board.

If you're skilled enough to open your key fob and aren't afraid of making a mess, we can take the buttons out of their sockets and then solder new ones. It's also worth checking the battery terminal connections. If they are loose, the buttons may not function or get stuck in their down position. Soldering the terminals, and putting the button back in place is usually all that's needed to return a non-working key fob to functioning condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than remote fobs that contain them but they can still be broken car key repair by a hole being that is drilled into them or over by a lawnmowers or car remote key repair door handle. Failures of the fuse are typically the cause of non-remote chip failures.

If you're not comfortable opening the key fob, you may take the circuit board off and use a multimeter to verify that the diode is functioning properly. If you're not comfortable with this, go to your local Oreilly or hardware store and use their RF frequency tester. This will tell you whether the key fob sends a signal.

Programming

Key fobs take a lot of abuse and aren't indestructible. They can lose their pairing with the receiver in your vehicle due to shocks or a low-battery, which requires changing the program. A professional auto locksmith or a main dealer will be able to reprogram your key fob to get it working again. If resetting or repairing your keyfob does not work it is possible to replace it.