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How to Fix a Key Fob That isn't Working

If your key fob isn't working There are a few simple steps that can be taken to fix it. The first step is to be sure that it's not your backup remote.





If the backup is able to lock and unlock your car door, it is most likely an issue with the main remote. The majority of car remote key malfunctions are caused by circuitry or battery issues.

Battery

The battery inside the key fob may wear out over time. It is relatively easy to change out batteries, but it is important to ensure you use the right type that you can refer to the owner's manual or talk to the dealer of the manufacturer to find out the kind of battery you need. It's also a good idea to inspect the battery compartment thoroughly because dead batteries can leak caustic chemicals that can damage the remote. If changing the batteries does not solve the problem it could be because there are other issues that require professional attention. For instance, if the buttons seem stuck or broken, it may be necessary to disassemble the remote and rework its components. You can also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs may become dirty and worn-out from repeated use. This is not atypical, but it can cause buttons to stop working or require a very hard press for them to work. This can be a hassle, especially when you are away from home and you need to switch on your car. Even broken or damaged buttons are often fixable with a little effort and the tools you already have at home.

First, verify that the batteries have been correctly inserted and that the indentation at the back of the button has been filled. Then, carefully open up the remote and look at the circuit board. Examine for signs of rust or other signs that the buttons are worn or damaged, like missing conductive paint. Use a Q-tip dipped into rubbing alcohol to gently clean any membrane contact that has worn-out or has conductive paint missing. Avoid rubbing too hard, as this can erode the conductive paint and stop the button firing when pressed.

Check the battery connector terminals for loose solder connections. Soldering them back to their original position can restore the button's functionality in the event that this is the case. The same procedure can be used to restore functionality to any other loose connections inside the fob.

In the end, if any of the buttons made of rubber on the front of the key fob aren't working or require a long press to function it is likely the graphite disks that are on the back of the button are wearing out and need to be replaced. This can usually be done by rubbing a pencil on the disks, which should bring the button back to working.

If all of this doesn't help, or if the button doesn't respond to a hard press, then it may be because the circuit board itself has gone bad. This can sometimes be repaired by a quick clean and refitting, but it's recommended to have an additional fob available in the event this method fails for you.

Circuitry

Whether or not the key fob buttons are working, the circuit board inside your remote may be dirty. The issue can be solved through a thorough examination. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case can let water and other debris into the circuit board, causing it to short. Water can also eat away at pins and small connectors on the board, referred to as via's.

If you're handy enough to open up your key fob and aren't afraid of a little mess, we can remove the solder from the buttons and put new ones in their place. It's also worth looking at the battery terminal connections. They can become extremely dirty and if they're loose the buttons might not work or may even remain in their down position. Soldering car remote key repair near me , and putting the button back into place is typically all that's required to return the key fob that is not working to working condition.

Non-Remote transponder chips

Sealed non-remote transponder chips are more durable than remote fobs that contain them but they can still be damaged by a hole that is that is drilled into them or over by a lawnmowers or car door handle. Most of the time non-remote transponder chip malfunctions can be blamed on a blown fuse.

If you're able to remove a key fob that is sealed and are willing to put up with the mess, you can easily remove the circuit board and check the fuse with a multimeter for proper diode function. If broken car key repair don't feel comfortable with this, visit your local Oreilly or hardware store and utilize their RF frequency tester. This will inform you whether the key fob is sending signals.

Programming

Key fobs endure a lot of abuse and aren't completely indestructible. They can lose their pairing to the receiver in your car due to shock or low battery, which calls for them to be reprogrammed. A professional auto locksmith or dealer can reprogram your key fob to get it back up and running. In the rarer case that resetting and repairing your key fob isn't working, it could be time to replace it entirely.