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How to Fix a Key Fob That isn't Working

If your key fob does not work, you can fix it by following just a few steps. First, make sure that it's not your backup remote.

If your backup remote car key repairs can unlock and lock the doors of your vehicle, it is likely that the main remote isn't functioning. The most common causes for repair car key remote remote key failure are issues with the circuitry or battery.

Battery

It is not uncommon for the battery inside a key fob for cars to wear out. It is easy to replace a battery. However it is essential that you use the correct kind. You can check the owner's manual or contact the manufacturer to inquire about the right kind. It is also important to inspect the battery compartment, since dead batteries can leak caustic chemicals that can harm the remote. If replacing the battery does not fix the problem there may be additional issues that require attention from a professional. For instance, if the buttons appear stuck or damaged it could be necessary to disassemble the remote and rework its components. You could also try reprogramming the vehicle to recognize the new device.

Buttons

From repeated use, key fobs may get dirty and worn. This is not unusual however, it can cause buttons to stop working or require a very difficult press to get them to function. This can be extremely frustrating, especially if you are out of town and need to start your vehicle. Even malfunctioning or worn-out buttons are often fixable with a little time and the tools you already have at home.

First, check that the batteries are properly installed and that the indentation on the back of the button has been filled. Open the remote carefully and examine the circuit board. Check for signs of corrosion or other indications that the buttons are worn out or damaged, like missing conductive paint. Use a Q-tip dipped in alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Don't rub too hard as this can damage the conductive paint and prevent the button from firing when it is pressed.

Check the battery connector terminals carefully for any loose solder connections. If this is the case, connecting them back can bring back function to the button. The same procedure can be used to restore function to any loose connections within the fob.

In the end, if any of the buttons made of rubber that are on the front of the key fob aren't working or require a very long press to function it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. You can do this by rubbing a pen across the disks. This will bring the button back to life.

If all of this doesn't help or if the button still doesn't respond to a firm press, then it may be that the circuit board has gone bad. This can sometimes be repaired with a quick clean and re-soldering, but it is recommended to have an additional fob available in the event this method doesn't work for you.

Circuitry

If the key fob buttons are working, the circuit board inside your remote might be dirty. A thorough inspection will usually resolve this problem. Broken and damaged cases are the most common causes of boards that are dirty. A broken case can allow water and other debris to enter the circuit board, which can cause it to short out. Water can also eat away at pins and small connectors on the board called via's.

If you're handy enough to remove your key fob, and you're not afraid of a little mess, we can take off the buttons and solder new ones in their place. It's also worth checking the connections between the battery terminals. If they're loose, the buttons may not function properly or become stuck in their down position. Soldering the terminals and buttons back in their place is generally all it takes to restore a non-working key fob to working condition.

Non-Remote transponder chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs, however they are susceptible to cracking when a hole is made into them or key fob repairs near me [swwwwiki.coresv.net] in the event that a door handle of a car or lawnmowers is pushed over them. Most of the time, non-remote transponder chip failures can be blamed on blowing fuses.

If you're not confident opening the key fob, you can remove the circuitboard and use a multimeter to determine if the diode is working correctly. If you're not comfortable with this, you can go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob transmits a signal.

Programming

Key fobs are subject to a lot of abuse and aren't completely indestructible. They may lose their connection with the receiver inside your vehicle due to shocks or low battery, which calls for reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob to get it functioning again. In the rarer case that resetting and repairing your key fob doesn't work it could be the time to replace it completely.