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How to Fix a Key Fob That isn't Working
If your key fob won't work and you're not sure why, 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 is able to lock and unlock your car door, then there's a likely issue with the primary remote. Most problems with car remote keys result from circuitry or battery issues.
Battery
The battery inside a key fob can wear out over time. It is fairly easy to replace batteries, but it is important to make sure that you select the correct one that you can refer to your owner's manual or contact the dealer for the manufacturer to determine the type of battery you require. It is recommended to inspect the battery compartment carefully, as dead batteries sometimes release caustic chemicals that could cause damage to the remote. If changing the battery doesn't solve the issue, there may be other issues that require professional attention. For example, if buttons seem stuck or damaged, it may be necessary to take the remote apart and rework its parts. You can also try reprogramming the vehicle to recognize the new fob.
Buttons
From repeated use, key fobs can become worn and dirty. This is not atypical however, it can cause buttons to stop working or require a hard press for them to work. This can be very frustrating, especially if you are away from home and you need to start your vehicle. Even broken or damaged buttons can be fixed with a little time and tools you already have at home.
First, check that key repair near me are up correctly and that the indentation on the back of the button is filled. Take the remote apart and examine the circuit board. Look for signs of corrosion or other signs that the buttons are worn or damaged, like missing paint that is conductive. Then, using a Q-tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that are damaged or where conductive paint is missing. Be careful not to rub too hard, since this could cause damage to the conductive painting and prevent the button firing when pressed.
Also, be sure to check the battery connector terminals for any loose solder connections. Soldering them back to their original position can restore the button's functionality in the event that this is the situation. The same process can be used to restore functionality to any other loose connections within the fob.
In the end, if any of the buttons made of rubber on the front of the key fob stop functioning or require a hard press to work it is likely the graphite disks on the back of the button are deteriorating and require replacement. It is usually done by rubbing a pen over the disks. This will bring the button back to life.
If none of this is helpful, or if the button does not respond to a hard push, then it may be the case that the circuit board itself has become damaged. This can sometimes be repaired by a quick clean, and re-soldering, 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 work or not. The issue can be solved by a thorough inspection. Broken and damaged cases are the most frequent causes of dirty boards. A damaged case can allow water and other debris to get in 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're able to remove your key fob, and you're not afraid of some mess, we can de-solder the buttons and put new ones in their place. It's also worth examining the battery terminal connections. key repair near me can get very filthy and if they're not tight enough, the buttons might not work or even stay in their down position. Soldering the terminals and button's back in their place is generally all it takes to restore a non-working key fob to working order.
Non-Remote transponder chips
The sealed non-remote chips are more durable than their remote fobs, however they are susceptible to cracking in the event of a hole being drilled in them, or when a door handle for a car or lawnmower runs over them. Most of the time non-remote transponder chips fail, and this can be attributed to an exploded fuse.
If you're not comfortable opening the key fob, you can take the circuit board off and use a multimeter to determine if the diode is functioning properly. If you're not confident doing this, visit your local hardware store or the Oreilly's and they'll usually have a radio frequency tester that can let you know if the key fob is sending signals.
Programming
Key fobs aren't impervious to destruction and are susceptible to being damaged through a variety of causes. They can break their connection with the receiver in your vehicle because of shocks or a low-battery, which requires changing the program. A professional auto locksmith or main dealer can reprogram your key fob and get it back up and running. If, in the unlikely event that resetting and repairing your key fob doesn't work it may be time to replace it all over again.