The 10 Most Terrifying Things About Remote Key Repair
How to Fix a Key Fob That isn't Working
If your key fob won't work then you can fix it by following a few simple steps. The first step is to be sure it's not the backup remote.
If the backup can lock and unlock your car doors, then there is likely an issue with the main remote. Most problems with car remote keys result from circuitry or battery problems.
Battery
It is not uncommon for the battery inside the key fob for cars to wear out. It is simple to replace the battery. However it is crucial that you choose the right type. You can refer to your owner's guide or contact the manufacturer to find out the right type. It is also crucial to inspect the battery compartment as batteries that are not working properly can release caustic chemicals which can damage the remote. If changing the battery doesn't solve the issue there may be additional issues that require attention from a professional. For instance, if the buttons seem to be stuck or damaged It may be necessary to take the remote apart and rebuild its components. You could also try reprogramming your car to recognize the new key fob.
Buttons
Due to repeated use, key fobs may get dirty and worn. It is not common to have buttons stop working, or to require a long press to make them work. This can be very frustrating, especially when you are away from your home and need to start your car. Even worn-out or malfunctioning buttons are often fixable with a bit of time and tools you already have at home.
First, verify that the batteries are properly placed and that the indentation at the back of the button has been filled. Open the remote carefully and examine the circuit board. Examine for signs of rust or other indications that the buttons have been worn or damaged. For instance there could be conductive paint missing. Use a Q-tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that have worn or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint and prevent the button from firing when you press it.
Also, make sure to inspect the battery connector's terminals for a loose solder connection. Soldering them back in place will restore the button's functionality If this is the case. The same method can be used to restore function to any loose connections in the fob.
If any of the rubber buttons on the front of the keyfob aren't functioning or require to be pressed extremely hard, the graphite disks at the back of the button may have worn out and will need to replaced. You can usually do this by rubbing a pen across the disks. This should bring the button back to life.
If none of these solutions work or you are unable to get the button to respond when you press it hard, it could be that the circuitry has failed. This can sometimes be repaired 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 fails for you.
Circuitry
The circuit board inside the remote control could be dirty, regardless of whether the buttons on the key fob are working or not. A thorough inspection is usually enough to fix this issue. The most common causes of dirty circuit boards are water and damaged cases. A damaged case can allow water and other debris to get in and short out the electronic components. Water can also damage pins and connectors on the board, referred to as via's.
If you're handy enough to remove your key fob and don't mind making a mess, we can take off the buttons and solder new ones in their place. It's also worth examining the battery terminal connections. G28CarKeys can become very dirty and if they're loose the buttons might not work or even stick in their down position. Soldering the terminals, and putting the button back in place is usually all that's required to return keys that are not in working order.
Non-Remote Transponder Chips
The sealed non-remote chips are more durable than remote fobs, however they are susceptible to cracking when a hole is made into them or when a door handle for a car or lawnmower runs over them. The majority of non-remote transponder chips fail, and this can be attributed to blowing fuses.
If you're not comfortable opening the key fob, you may remove the circuitboard and use a multimeter to verify that the diode is functioning correctly. If you're not comfortable doing this, go to your local hardware store or Oreilly's and they will usually have a RF frequency tester that will determine if the key fob is sending signals.
Programming
Key fobs aren't impervious to destruction and are susceptible to damage by a lot of things. They can break their connection with the receiver in your vehicle due to shocks or low battery, which calls for the reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob and get it back up and running. In the event that resetting or repairing your key fob isn't working it may be time to replace it all over again.