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How to Fix a Key Fob That isn't Working

If your key fob isn't functioning A few easy steps can fix it. First, check to make sure it's not your backup remote.

If the backup is able to lock and unlock your car key remote repair near me door, then there's a likely issue with the main remote. Most car remote key failures are caused by circuitry or battery issues.

Battery

It is not uncommon to find a battery on a car key fob to wear out. It is easy to replace a battery. However, it is important that you use the correct type. You can check your owner's manual or call the manufacturer to inquire about the right type. It is also a good idea to examine the battery compartment carefully because dead batteries can leak harmful chemicals that can damage the remote. If changing the batteries doesn't solve the issue, it may be that there are other issues that require professional attention. If buttons are broken or stuck, for example it might be necessary to remove the remote and rebuild each component. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs may become dirty and worn out from frequent use. This is not unusual, but it can cause buttons to stop working or require a very difficult press to get them to function. This can be very frustrating, especially if you are away from home and you need to start your vehicle. Even malfunctioning or worn-out buttons can be fixed with a little effort and the tools you already have at home.

First, make sure that the batteries have been correctly inserted and that the indentation at the back of the button is filled. Then, open the remote with care and look over the circuit board. Examine for signs of rust or other indications that the buttons have been damaged or worn. For example the paint that conducts electricity could be missing. Use a Q-tip, dipped in rubbing alcohol to gently clean any membrane contact that has worn-out or where conductive painting is missing. Avoid rubbing too hard, as this can erode the conductive paint and block the button from firing when pressed.

Examine the battery connector's terminals for loose solder connections. If this is the case, simply soldering them back in place can restore function to the button. You can use the same method to restore functionality to any other loose connection in the fob.

Finally, if any of the buttons made of rubber on the front of the key fob stop working or require a hard press to work, it is likely that the graphite disks that are on the back of the button are wearing out and need to be replaced. This can be done by rubbing a pencil across the disks, which should bring the button back to its original state.

If all of this doesn't help or if the button still doesn't respond to a hard push It could be that the circuit board itself has gone bad. It is possible to fix the issue by cleaning and re-soldering the button however, you should have an extra in case it doesn't work.

Circuitry

Whether or not the key fob buttons function the circuit board that is inside your remote might be dirty. A thorough examination will usually resolve this issue. The most common causes for dirty circuit boards is water and broken cases. A damaged case allows water and other debris to pass through and short out the electronic components. Water can also damage pins and vias, which are tiny connectors on the board.

If you're able to remove your Mobile Key fob repair fob and don't mind a little mess, we can de-solder the buttons and Mobile key Fob repair solder new ones in their place. It's also worth checking the battery terminal connections. If they're loose, the buttons might not function properly or become stuck in their down position. Soldering the terminals back to their proper positions is usually enough to bring a non-working fob to working.

Non-Remote transponder chips

The non-remote chips that are sealed are more durable than their remote fobs. However, they are susceptible to breaking if a hole is drilled in them or when a door handle for a car or lawnmower runs over them. Most of the time non-remote transponder chips fail, and this can be attributed to blowing fuses.

If you're not comfortable opening the key fob, remove the circuitboard and use a multimeter to check that the diode is functioning properly. If you're not confident doing this, head to your local hardware store or Oreilly's and they usually have a radio frequency tester that can let you know whether the key fob sending signals.

Programming

Key fobs endure lots of abuse and aren't impervious to damage. They can lose their pairing to the receiver in your car due to shock or a low battery, which requires the reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob to get it working again. If resetting or fixing the keyfob is not working it may be necessary to replace it.