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How to Fix a Key Fob That isn't Working
If your key fob does not work, you can fix it by following just a few steps. First, make sure that it's not your backup remote.
If the backup remote is able to lock and unlock your car door, then there is likely an issue with the main remote. The most common causes for key malfunctions for car remotes are battery or circuitry issues.
Battery
The battery inside a key fob can be worn out over time. It is easy to replace batteries. However, it is important that you use the correct type. You can consult your owner's manual or call the manufacturer to find out the correct type. It is recommended to examine the battery compartment carefully, as dead batteries sometimes leak harmful chemicals that can damage the remote. If changing the batteries does not solve the problem, it may be that there are other issues that require attention by a professional. For instance, if the buttons seem stuck or broken, it may be necessary to take the remote apart and rebuild its components. It is also possible to reprogramme the vehicle to recognize the new device.
Buttons
Key fobs may become dirty and worn-out from frequent use. This is not unusual however, it can cause buttons to cease working or require a long press to function. This can be very frustrating, especially if you are away from home and need to start your vehicle. Even broken or damaged buttons are often fixable with a bit of time and tools you already have at home.
First, make sure that the batteries are correctly installed and that the indentation at the back of the button is filled. Then, open the remote with care and look over the circuit board. Check for signs of corrosion or other signs that the buttons are worn out or damaged, like missing paint that is conductive. Use a Q-tip dipped in alcohol, gently clean any membrane contacts that are worn or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint and stop the button from firing when it is pressed.
Also, make sure to inspect the battery connector's terminals to ensure an unattached solder connection. Soldering them back to their original position will restore the button's functionality If this is the case. The same process can be used to restore function to any other loose connections in the fob.
Finally, if any of the buttons made of rubber that are on the front of the key fob aren't working or require a very hard press to work it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. This is usually done by rubbing a pencil over the disks, which should bring the button back to working.
website If all of this doesn't help, or if the button does not respond to a hard press, then it may be the case that the circuit board has gone bad. It is possible to fix this issue by cleaning and re-soldering your fob however, you should have an extra in case it doesn't work.
Circuitry
Whether or not the keys fob buttons are functioning, the circuit board inside your remote might be dirty. This issue can be fixed by a thorough inspection. The most common causes for dirty circuit boards are water and damaged cases. A broken case allows water and other debris to enter and short circuit the electronics. Water can also damage pins and connectors on the get more info board called via's.
If you're handy enough to open up your key fob check here and aren't afraid of some mess, we can de-solder the buttons and then solder new ones in their here place. It's also worth examining the battery terminal connections. They can become extremely dirty and if they're loose, the buttons may not work or even stay in their down position. Soldering the terminals, and putting the button back into place is typically all it takes to click here restore a non-working key fob to functioning condition.
Non-Remote Transponder Chips
The sealed non-remote chips are more durable than their remote fobs, but they are susceptible to breaking when a hole is made in them, or if a car door handle or lawnmower runs over them. The majority of non-remote transponder chips fail, and this could be attributed to a blown fuse.
If you're handy enough to remove a key fob that is sealed and are able to bear the mess, you can remove the circuit board and test the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not confident doing this, visit your local hardware store or Oreilly's and they'll usually have an radio frequency tester that can let you know if the key fob is sending signals.
Programming
Key fobs take many abuses and aren't impervious to damage. They may lose their connection with the receiver inside your vehicle due to shocks or a low battery, which calls for the reprogramming. A professional auto locksmith, or main dealer can reprogram your keyfob to get it working again. If, in the unlikely event that resetting and fixing your key fob doesn't work, it could be time to replace it all over again.