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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 make sure that it's not the backup remote.
If the backup is able to lock and unlock your car doors, it is most likely an issue with the main remote. Most problems with car remote keys are caused by circuitry or battery issues.
Battery
It is not uncommon for the battery in a key fob for cars to wear out. It is quite simple to change out the battery, however it is important to ensure you choose the correct type and you can consult the owner's manual or talk to the dealer for the manufacturer to determine the type of battery you need. It is also a good idea to inspect the battery compartment with care because dead batteries can release caustic chemicals that could cause damage to the remote. If changing the battery doesn't fix the issue there may be additional issues that require professional attention. For instance, if buttons appear stuck or damaged it could be necessary to take the remote apart and rework its parts. You could also try reprogramming the vehicle to recognize the new device.
Buttons
From repeated use, key fobs can wear out and become dirty. This is not atypical however it can cause buttons to stop working or require a very long press to function. This can be a huge hassle especially if you're out of town and need to start your vehicle. Even broken or damaged buttons are often fixable with a little effort and materials you already have at home.
First, ensure that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, carefully open up the remote and look at the circuit board. Look for signs of corrosion or other indications that the buttons are worn or damaged, such as missing conductive paint. Use a Q-tip, dipped in alcohol to gently clean any membrane contact that has become worn-out or has conductive paint missing. Do not rub too vigorously, as this could erode the conductive paint, and block the button from firing when it is pressed.
check here Examine the battery connector's terminals carefully for any loose solder connections. Soldering them here back into place will allow the button to function again If this is the case. The same process can be used to restore function to any loose connections inside the fob.
Finally, if any of the rubber buttons on the front of the key fob have stopped working or require a hard press to work, it is likely that the graphite disks that are 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 these solutions work, or if you still not be able to get the button respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix this issue by cleaning and re-soldering the fob, but you should have another spare in case it does not work.
Circuitry
Whether or not the key fob buttons are working, the circuit board inside your remote might be dirty. A thorough examination is usually enough to fix this issue. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case can allow water and other debris to enter and short out the electronic components. Water can also eat through pins and vias, which are small connectors on the board.
If you are handy enough to open your key fob, and you don't mind making some mess, we can website take the buttons out of their sockets and put in new ones. Also, you should check check here the connections between battery terminals. They can get very dirty and if they're loose, the buttons might not function or even stay in their down position. Soldering terminals and buttons back to their proper positions is usually enough to return a malfunctioning fob back to working.
Non-Remote Transponder Chips
Sealed non-remote transponder chips are more durable than the remote fobs they are contained in, but they can be more info damaged by a hole that is drilled into them or run over by a lawnmowers blade or car door handle. Most of the time, non-remote transponder chips fail, and this could be attributed to blowing fuses.
If you're handy enough to open up a key fob that is sealed and are able to bear the mess, you can easily remove the circuit board and check the fuse with a multimeter to ensure that it is functioning as intended. function. 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 whether the key fob is sending signals.
Programming
Key fobs are not indestructible and are susceptible to being damaged by a variety of factors. They can lose their pairing to the receiver in your car because of shock or a low battery, which calls for the reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob and get it functioning again. If resetting or fixing your key fob fails it may be necessary to replace it.