How to Fix a Key Fob That isn't Working
If your key fob isn't functioning A few easy steps can be taken to fix it. The first step is to make sure that it's not the backup remote.
If your backup remote is unable to lock and unlock the doors of your car, then it is likely that the primary remote isn't working. The most common causes of key problems with your car remote are issues with the circuitry or battery.
Battery
The battery in a key fob can wear out over time. It is easy to replace the battery. However, it is important to select the right type. You can check your owner's manual or call the manufacturer to find out the right type. It is recommended to examine the battery compartment with care because dead batteries can leak caustic chemicals that can damage the remote. If replacing the batteries doesn't solve the issue it could be because there are other issues that require professional attention. For key fob repair near me , if buttons seem to be stuck or damaged it could be necessary to take the remote apart and rework its parts. You can also try reprogramming the vehicle to recognize the new device.
Buttons
Due to frequent use, key fobs could get dirty and worn. It is not uncommon for buttons to cease functioning, or require a hefty push to make them work. This can be very frustrating particularly when you're away from home and have to turn on your car. Even worn-out or malfunctioning buttons are often fixable with a little time and tools you already have at home.
First, check that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, open the remote with care and inspect the circuit board. Examine for signs of rust or other indications that the buttons have been damaged or worn out. For example there could be conductive paint missing. Utilizing a Q-tip dipped in alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Avoid rubbing too hard, because this could damage the conductive painting and prevent the button firing when pressed.
Also, be sure to check the battery connector's terminals to ensure a loose solder connection. If this is the case, simply reconnecting them could bring back function to the button. You can follow the same process to restore functionality to any other loose connection within the fob.
If any of the rubber buttons on the front of the keyfob isn't working or require being press very hard, the graphite disks at the back of the button could have worn out and require replacement. You can usually do this by rubbing a pen across the disks. This will bring the button back to life.
If none of this is useful or if the button still does not respond to a firm press, then it may be that the circuit board itself has gone bad. It is possible to fix this by a quick clean, and replacing the solder, but it is best to have an extra fob on hand in the event that this method does not work for you.
Circuitry
If the keys fob buttons are functioning the circuit board that is inside your remote may be dirty. A thorough inspection is often enough to resolve this issue. Water and broken cases are the most frequent causes of boards that are dirty. A damaged case allows water and other debris to get in and short circuit the electronics. Water can also damage pins and connectors that are small on the board called via's.
If you're handy enough to open your key fob and don't mind 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 become extremely dirty and if they're loose, the buttons might not work or even stay in their down position. Soldering the terminals and button's back into place is typically all that's needed to return keys that are not in functioning condition.
Non-Remote Transponder Chips
The non-remote chips sealed in a sealed case are more durable than their remote fobs, but they are susceptible to breaking when a hole is made in them or in the event that a door handle of a car or lawnmower runs over them. The majority of non-remote transponder chips fail, and this can be attributed to an exploded fuse.
If you're not confident opening the key fob, remove the circuitboard and use a multimeter to check that the diode is functioning correctly. If you're not sure with this, go to your local Oreilly or hardware store and utilize their RF frequency tester. This will let you know whether the key fob sends a signal.
Programming
Key fobs are not indestructible and are susceptible to damage by a variety of factors. They can break their connection with the receiver in your vehicle due to shocks or a low battery, requiring reprogramming. A professional auto locksmith or a dealer in the main can reprogram your key fob and get it back working again. In the event that resetting and repairing your key fob doesn't work it may be time to replace it all over again.
