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How to Fix a Key Fob That isn't Working

If your mobile key repair fob doesn't work and you're not sure why, you can fix it with just a few steps. First, ensure that it's not the backup remote.

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

Battery

It is not uncommon for the battery in a car key fob to wear out. It is easy to replace the battery. However it is crucial to select the right type. You can refer to your owner's guide or contact the manufacturer to find out the correct type. It's recommended to examine the battery compartment carefully, as dead batteries sometimes leak harmful chemicals that can harm the remote key repair near me. If replacing the batteries doesn't solve the issue, it may be that there are other issues that require professional attention. If the buttons are stuck or broken for instance, it may be necessary remove the remote and rebuild each component. You could also try reprogramming your car to recognize the new key fob.

Buttons

Key fobs can get filthy and worn out due to repeated use. It is not uncommon for buttons to stop functioning, or require a long press to get them working. This can be very frustrating especially if you're away from home and you need to start your vehicle. Fortunately, even worn-out or damaged buttons can be fixed with a bit of time and some of the materials you may already have around the house.

First, check that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and look at the circuit board. Examine for evidence of rust, or other indications that the buttons have been damaged or worn out. For instance, conductive paint may be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that is damaged or where conductive painting is missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and block the button from firing when it is pressed.

Check the battery connector's terminals carefully for any loose solder connections. If this is the case, simply reconnecting them could bring back function to the button. You can apply the same procedure to restore functionality to any other loose connection within the fob.

If, for instance, any of the rubber buttons on the front of the key fob aren't working or require a very hard press to work it is likely the graphite disks that are on the back of the button are wearing out and require replacement. This can be done by rubbing a pencil across the disks, which should bring the button back to its original state.

If none of these solutions work, or if you still not be able to get the button respond when you press it hard, it could be that the circuitry has failed. It is possible to fix this by cleaning and re-soldering the fob but you should also have another spare in case it doesn't work.

Circuitry

If the key fob buttons are working the circuit board in your Remote Key Repair may be dirty. A very thorough inspection is usually enough to fix this problem. The most common causes for dirty circuit boards are water and broken cases. A damaged case could allow water and other debris to get into the circuit board, which can cause it to short out. Water can also damage pins and vias, which are the tiny connectors found on the board.

If you're able to open up your key fob and aren't afraid of a little mess, we can remove the solder from the buttons and put new ones in their place. Also, it's worth checking the connections between the battery terminals. If they are loose, the buttons could not work or even become stuck in their down position. Soldering the terminals and buttons back in place is usually all that's needed to return the key fob that is not working to functioning condition.

Non-Remote transponder chips

Sealed non-remote transponder chips are more durable than remote fobs they are contained in, but they can still be broken by a hole being drilled into them or run over by a lawnmower or door handle for a car. Fuse failures are usually the cause of 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 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 signals.

Programming

Key fobs endure lots of abuse and aren't impervious to damage. They can break their connection with the receiver inside your vehicle due to shocks or low-battery, which requires reprogramming. A professional auto locksmith, or main dealer can reprogram your keyfob and get it working again. If, in the unlikely event that resetting or repairing your key fob fails, it could be time to replace it all over again.