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How to Fix a Key Fob That isn't Working

If your key fob won't work then you can fix it with a few simple steps. First, make sure that it's not the backup remote.

If the backup can lock and unlock your car remote key fob repair door, then there's a likely issue with the main remote. The most frequent causes of key malfunctions for car remotes are circuitry or battery issues.

Battery

It is not unusual for the battery in a car key fob to get worn out. It is relatively easy to change out a battery, although it is essential to ensure that you select the correct one that you can refer to your owner's manual, or contact the manufacturer's dealer to determine the type of battery you require. It is recommended to examine the battery compartment with care since dead batteries may leak harmful chemicals that can harm the remote. If changing the batteries does not solve the problem it could be because there are other issues that require attention by a professional. If buttons are damaged or stuck for instance it might be necessary to take the remote apart and rework each component. You could also try reprogramming your vehicle to recognize the new key fob.

Buttons

Through frequent use, key fobs can become worn and dirty. This is not uncommon however it can cause buttons to stop functioning or require a difficult press to get them to work. This can be very frustrating especially if you're away from home and you need to start your car key repairs near me. Even malfunctioning or worn-out buttons are often fixable with a bit of time and materials you already have at home.

First, check that the batteries are properly installed and that the indentation on the back of the button has been filled. Then, carefully remove the remote and inspect the circuit board. Examine for signs of rust or other signs that the buttons are worn out or damaged, such as missing conductive paint. Utilizing the Q-tip, dipped in alcohol, gently clean any membrane contacts that have become damaged or where conductive paint is missing. Be careful not to rub too hard, because this could damage the conductive paint and block the button from firing when the button is pressed.

Check the battery connector's terminals carefully for any loose solder connections. If this is the case, simply connecting them back may restore function to the button. You can use the same method to restore functionality to any other loose connection inside the fob.

If, for instance, any of the buttons made of rubber on the front of the key fob aren't 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 require replacement. This can usually be done by rubbing a pencil across the disks, which should bring the button back to working.

If all of this doesn't help, or if the button still does not respond to a firm press, then it may be because the circuit board itself has become damaged. This can sometimes be repaired by a quick clean and replacing the solder, but it is best to have an extra fob in case this method does not work for you.

Circuitry

Whether or not the keys fob buttons are functioning the circuit board that is inside your remote might be dirty. The issue can be solved through a thorough examination. The most frequent causes of dirty circuit boards is water and damaged cases. A damaged case can allow water and other debris to get in and short circuit the electronics. Water can also eat away at pins and connectors on the board, referred to as via's.

If you're able to open your key fob, and you're not afraid of some mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth looking at the battery terminal connections. They can get very dirty and if they're loose the buttons might not function or even stay in their down position. Soldering the terminals and buttons back in their place is generally all it takes to restore keys that are not in working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than the remote fobs that have them but they can still be damaged by a hole that is that is drilled into them or over by a lawnmower or door handle for a car key fob repair service. The majority of non-remote transponder chips fail, and this could be attributed to an exploded fuse.

If you are not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to verify that the diode is operating properly. If you're unsure about doing this, visit your local hardware store or Oreilly's, and they will usually have an RF frequency tester that will let you know if the Broken Key Repair fob is transmitting a signal.

Programming

Key fobs aren't impervious to destruction and can be damaged by a variety of factors. They may lose their connection with the receiver inside your vehicle due to shocks or a low-battery, which requires reprogramming. A professional auto key repair near me locksmith or a main dealer will be able to reprogram your key fob to get it functioning again. In the event that resetting or repairing your key fob fails it could be the time to replace it entirely.