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How to Fix a Key Fob That isn't Working

If your key fob isn't working There are a few simple steps that can fix it. The first step is to make sure that it's not the backup remote.

If the backup remote is able to lock and unlock your car doors, it is most likely an issue with the main remote. The most frequent causes of key malfunctions for car remotes are circuitry or battery issues.

Battery

The battery in the key fob may get worn out over the course of time. It is fairly easy to change out a battery, although it is important to make sure that you select the correct one that you can refer to your owner's manual, or contact the dealer for the manufacturer to determine the type of battery you require. It is also a good idea to inspect the battery compartment with care, as dead batteries sometimes leak caustic chemicals that can damage the remote key repair. If changing the battery doesn't solve the issue there may be additional issues requiring professional attention. For example, if buttons seem stuck or broken it could be necessary to take the remote apart and rework its components. It is also possible to reprogramme the vehicle to recognize the new fob.

Buttons

Key fobs can get dirty and worn-out from frequent use. This is not unusual however it can cause buttons to stop working or require a hard press for them to function. This can be extremely frustrating particularly if you're away from home and need to start your car. Even worn-out or malfunctioning buttons are often fixable with a little time and the tools you already have at home.

First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open up the remote and look at the circuit board. Check for signs of corrosion or other indications that the buttons are worn or damaged, like missing conductive paint. Utilizing a Q-tip dipped in alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Be careful not to rub too hard, because this could damage the conductive painting and prevent the button from firing when it is the button is pressed.

Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, simply connecting them back can restore functionality to the button. The same method can be used to restore functionality to any other loose connections in the fob.

If any of the rubber buttons located at the front of the keyfob are not working or require being press extremely hard the graphite disks on the back of the button may have worn out and require replacement. It is usually done by rubbing a pencil over the disks. This should bring the button back to life.

If none of these solutions work or you cannot get the button to respond when pressed hard, it is possible that the circuitry is failing. This can sometimes be repaired with a quick clean and replacing the solder, but it is ideal to have a spare fob available in the event this method does not work for you.

Circuitry

If the key fob buttons function the circuit board that is inside your remote might be dirty. A thorough examination is usually enough to fix this issue. The most common causes for dirty circuit boards are water and damaged cases. A damaged case could allow water and other debris to enter the circuit board, which can cause it to short out. Water can also get through pins and vias, which are small connectors on the board.

If you're handy enough to remove your key fob and aren't afraid of some mess, we can de-solder the buttons and solder new ones in their place. It's also worth examining the battery terminal connections. They can get very dirty and if they're loose the buttons might not work or may even remain in their down position. Soldering the terminals, and putting the button back into place is typically all that's needed to return keys that are not in working condition.

Non-Remote transponder chips

The non-remote control car key repairs chips that are sealed are more durable than remote fobs. However, they can be cracked in the event of a hole being drilled in them, or if a car door handle or lawnmowers is pushed over them. The majority of non-remote transponder chips fail, and this could be attributed to blowing fuses.

If you're not confident opening the key fob, you may remove the circuitboard and utilize a multimeter to determine if the diode is operating correctly. If you're not comfortable doing this, visit your local hardware store or Remote key Repair Oreilly's and they usually have a RFID frequency tester that can let you know whether the key fob transmitting a signal.

Programming

Key fobs are subject to many abuses and aren't impervious to damage. They may lose their connection to the car's receiver due to shock or remote key repair a low battery, which calls for the reprogramming. A professional auto locksmith, or a dealer in the main, can reprogram your key fob and get it back up and running again. If, in the unlikely event that resetting and fixing your key fob isn't working it may be time to replace it entirely.