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How to Fix a Key Fob That isn't Working

If your key fob isn't working A few easy steps can be taken to fix it. The first step is to be sure it's not the backup remote.

If the backup can lock and unlock your car door key repair near me, then there is likely an issue with the primary remote. The majority of car remote key malfunctions are caused by circuitry or battery problems.

Battery

The battery in the key fob could be worn out over time. It is relatively easy to change out a battery, although it is crucial to ensure that you use the right type and you can consult your owner's manual, or contact the dealer for the manufacturer to find out the kind 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 could be other issues that require professional attention. If buttons are stuck or broken for instance, it may be necessary take the remote apart and rework each component. It is also possible to reprogramme the vehicle to recognize the new fob.

Buttons

Key fobs can get dirty and worn out from repeated use. This is not atypical however it can cause buttons to stop working or require a very hard press for them to function. This can be a hassle, especially when you are away from your home and you need to start your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you might already have in the home.

First, make sure that the batteries are correctly inserted and that the indentation at the back of the button has been filled. Open the remote carefully and look over the circuit board. Look for signs of corrosion or other indications that the buttons are worn out or damaged, such as missing paint that is conductive. Then, using a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that are damaged or have conductive paint missing. Avoid rubbing too hard, since this could cause damage to the conductive paint and stop the button firing when it is pressed.

Check the battery connector's terminals carefully for any loose solder connections. If this is the case, reconnecting them can restore functionality to the button. You can follow the same method to restore functionality to any other loose connection in the fob.

If any of the rubber buttons on the front of the keyfob isn't working or need to be pressing very hard, the graphite disks at the back of the button may have worn out and need to replaced. You can do this by rubbing a pen over the disks. This should bring the button back to life.

If all of this doesn't help, or if the button does not respond to a firm press, then it may be because the circuit board has become damaged. It is possible to fix this issue by cleaning and re-soldering the button but you should also have an extra in case it doesn't work.

Circuitry

The circuit board in the remote control could be dirty regardless of whether the buttons on the key fob work or not. This problem can be resolved through a thorough examination. Broken cases and water are the most common causes of boards that are dirty. A damaged case can allow water and other debris to pass through and short circuit the electronics. Water can also damage pins and vias, which are the tiny connectors found on the board.

If you're able to remove your key fob and aren't afraid of a little mess, we can take off the buttons and then solder new ones in their place. It's also worth checking the battery terminal connections. They can get very filthy and if they're not tight enough, the buttons might not function or may even remain in their down position. Soldering the terminals back to their proper positions is usually enough to restore a non-working fob to working.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are more durable than the remote fobs they are contained in, however they are still susceptible to being broken by a hole being made in them or pushed over by a lawnmowers blade or door handle for a car. Most of the time non-remote transponder chips fail, and this can be attributed to an exploded fuse.

If you're handy enough to open a key fob that is sealed and can tolerate the mess, you can remove the circuit board and test the fuse with a multimeter for proper diode function. If you're unsure about doing this, head to your local hardware store or the Oreilly's and they usually have an radio frequency tester that can let you know whether the key fob transmitting a signal.

Programming

Key Lock Repair Near Me fobs aren't impervious to destruction and are susceptible to being damaged through a variety of causes. They may lose their connection to the car's receiver due to shock or low battery, requiring them to be reprogrammed. A professional auto locksmith, or main dealer can reprogram your keyfob and get it up and running again. In the event that resetting or repairing your key fob doesn't work, it could be time to replace it completely.