The Ugly Facts 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 some simple steps. The first step is to be sure that it's not the backup remote.
If the backup remote is able to lock and unlock your car doors, then there is likely an issue with the primary remote. Most car remote key failures are caused by battery or circuitry problems.
repair broken car key inside a key fob can be worn out over time. It is fairly easy to change out a battery, although it is crucial to ensure you select the correct one; you can look in your owner's manual or contact the manufacturer's dealer to determine the type of battery you need. It is also a good idea to inspect the battery compartment thoroughly since dead batteries may release caustic chemicals that could cause damage to the remote. If replacing the battery does not solve the issue there could be other issues that require professional attention. For instance, if buttons seem stuck or broken, it may be necessary to disassemble the remote and rework its parts. You can also try reprogramming the vehicle to recognize the new device.
Buttons
From frequent use, key fobs can get dirty and worn. This is not atypical however it can cause buttons to cease working or require a difficult press to get them to function. This can be a hassle particularly when you're away from your home and you need to switch on your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a bit of time and some of the materials you have in the house.
First, make sure the batteries are charged correctly and that the indentation on the back of the button is filled. Open the remote carefully and inspect the circuit board. Look for evidence of rust, or other signs the buttons are damaged or worn out. For example the paint that conducts electricity could be missing. Then, using a Q-tip dipped in alcohol, gently clean any membrane contacts that are damaged or have conductive paint missing. Do not rub too vigorously in order to damage the conductive paint and prevent the button from firing when it is pressed.
Also, carefully check the battery connector terminals for a loose solder connection. If this is the case, simply connecting them back could bring back function to the button. The same procedure can be used to restore function to any other loose connections within the fob.
If any of the rubber buttons on the front of the keyfob are not working or need to be pressed extremely hard the graphite disks on the back of the button may have worn out and need to replaced. This can usually be done by rubbing a pencil over the disks. This should bring the button back to life.
If none of these solutions work, or if you still are unable to get the button to respond when pressed hard, it is possible that the circuitry is failing. It is possible to fix this with a quick clean and replacing the solder, but it is ideal to have a spare fob available in the event this method fails for you.
Circuitry
If the keys fob buttons are functioning the circuit board that is inside your remote may be dirty. repair broken car key can be fixed by a thorough inspection. Water and broken cases are the most frequent causes of boards that are dirty. A broken case allows water and other debris to pass through and short circuit the electronics. Water can also damage pins and connectors on the board, referred to as via's.
If you're skilled enough to open your key fob and you don't mind making an mess, you can remove the buttons from their sockets and put in new ones. Also, you should check the connections between the battery terminals. If they're loose, the buttons might not function or get stuck in their down position. Soldering the terminals and button's back in their place is generally all that's needed to return keys that are not in working condition.
Non-Remote Transponder Chips
The non-remote chips that are sealed are more durable than remote fobs, but they are susceptible to breaking when a hole is made in them or when a door handle for a car or lawnmowers plows over them. Most of the time non-remote transponder chip failures can be attributed to a blown fuse.
If you're handy enough to open up the sealed key fob and can tolerate the mess, you can remove the circuit board and check the fuse with a multimeter for proper diode function. If you're not sure with this, go to your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob transmits signals.
Programming
Key fobs aren't impervious to destruction and are susceptible to damage through a variety of causes. They may lose their connection with the receiver inside your vehicle due to shocks or low-battery, which requires the reprogramming. A professional auto locksmith or a main dealer can reprogram your key fob and get it functioning again. In the rarer case that resetting and repairing your key fob doesn't work it may be time to replace it entirely.