10 Facts About Remote Key Repair That Can Instantly Put You In A Good Mood
How to Fix a Key Fob That isn't Working
If your key fob doesn't work, a few easy steps can be taken to fix it. The first step is to be sure that it's not the backup remote.
If your backup remote is unable to lock and unlock the doors of your vehicle, it is most likely that the primary remote isn't functioning. The most frequent causes of key malfunctions for car remotes are issues with the circuitry or battery.
Battery
It is not unusual to find a battery on the key fob for cars to wear out. It is simple to replace the battery. However it is essential that you use the correct kind. You can consult your owner's manual or call the manufacturer to determine the right type. It is recommended to inspect the battery compartment thoroughly, as dead batteries sometimes leak caustic chemicals that can harm the remote. If replacing the battery does not fix the problem, there may be other issues that require professional attention. If buttons are damaged or stuck, for example, it may be necessary remove the remote and rebuild each component. You could also try reprogramming your car to recognize the new key fob.
Buttons

Key fobs can get dirty and worn out from frequent use. It is not uncommon to have buttons stop functioning, or require a hard press to get them working. This can be very frustrating particularly if you're out of town and need to start your vehicle. Even broken or damaged buttons can be fixed with a bit of time and tools you already have at home.
First, verify that the batteries have been correctly inserted and that the indentation on the back of the button is filled. car remote key repair and examine the circuit board. Examine for signs of rust or other indications that buttons are worn out or damaged, such as missing conductive paint. Use the Q-tip, dipped in alcohol to 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 stop the button from firing when you press it.
Also, make sure to inspect the battery connector terminals for a loose solder connection. If this is the case, simply reconnecting them could restore function to the button. You can follow the same method to restore functionality to any other loose connection 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 hard press to work it is likely that the graphite disks on the back of the button are wearing down and require replacement. This can usually be done by rubbing a pencil over the disks, which should bring the button back to working.
If none of these solutions work or you 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 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 in your remote may be dirty. A thorough examination is usually enough to fix this problem. Broken and damaged cases are the most common causes of dirty boards. A damaged case can allow water and other debris to pass through and short out the electronics. Water can also eat through pins and vias, which are small connectors that are found on the board.
If you are handy enough to open your key fob, and aren't afraid of making a mess, we can take the buttons out of their sockets and put in new ones. It's also worth checking the connections between the battery terminals. If they are loose, the buttons might not function properly or become stuck in their down position. Soldering the terminals and button's back in place is usually all it takes to restore the key fob that is not working to working condition.
Non-Remote transponder chips
Sealed non-remote transponder chip are more durable than remote fobs they are contained in, but they can still be damaged by a hole that is that is drilled into them or over by a lawnmowers blade or door handle for a car. Failures of the fuse are typically the cause of non-remote chip failures.
If you're not comfortable opening the key fob, remove the circuitboard and utilize a multimeter to check that the diode is working properly. If you're not comfortable doing this, visit your local hardware store or Oreilly's and they will usually have an RFID frequency tester that can let you know whether the key fob is transmitting a signal.
Programming
Key fobs aren't impervious to destruction and are susceptible to being damaged by a lot of things. They can lose their pairing to the receiver in your car due to shock or 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. In the event that resetting and fixing your key fob fails it may be time to replace it completely.