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How to Fix a Key Fob That isn't Working

If your mobile key fob repair fob does not work then you can fix it by following a few simple steps. The first step is to make sure it's not the backup remote.

If the backup remote is able to lock and unlock your car doors, then there is likely an issue with the primary remote. Most problems with car keys repairs near me remote keys are caused by circuitry or battery problems.

Battery

The battery in a key fob can get worn out over the course of time. It is quite simple to change out the battery, however it is essential to ensure that you use the right type that you can refer to your owner's manual or contact the manufacturer's dealer to find out the kind of battery you need. It is also a good idea to inspect the battery compartment thoroughly, as dead batteries sometimes leak caustic chemicals that can damage the remote. If changing the battery doesn't fix the problem, there may be other issues requiring professional attention. For instance, if buttons appear stuck or damaged it could be necessary to take the remote apart and rebuild its components. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs can become dirty and worn-out from frequent use. It is not uncommon for buttons to stop functioning, or require a long push to make them work. This can be a huge hassle especially if you're away from home and you 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, verify that the batteries are properly inserted and that the indentation at the back of the button is filled. Open the remote carefully and inspect the circuit board. Examine for indications of rust or other signs the buttons have been damaged or worn. For example there could be conductive paint missing. Then, using the Q-tip, dipped in alcohol to gently clean any membrane contacts that have damaged or where conductive paint is missing. Avoid rubbing too hard as this can erode the conductive paint and stop the button firing when the button is pressed.

Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, simply reconnecting them could bring back function to the button. You can apply the same method to restore functionality to any other loose connection within the fob.

Finally, 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 on the back of the button are wearing out and need to be replaced. This is usually done by rubbing a pencil over the disks, which will bring the button back to its original state.

If all of this doesn't help or if the button still does not respond to a hard push It could be the case that the circuit board itself has gone bad. It is possible to fix the issue by cleaning and re-soldering the fob but you should also have an extra in case it doesn't work.

Circuitry

If the key fob buttons function, the circuit board inside your remote might be dirty. This issue can be fixed through a thorough examination. Broken cases and water are the most frequent causes of boards that are dirty. A damaged case can allow water and other debris to get in and short circuit the electronic components. Water can also destroy pins and small connectors on the board, referred to as via's.

If you are handy enough to open your key fob, and you don't mind making an mess, you can remove the buttons from their sockets and put in new ones. Also, you should check the connections between the 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 into place is usually enough to return a malfunctioning fob back to working.

Non-Remote transponder chips

Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, however they are still susceptible to being cracked by a hole that is drilled into them or over by a lawnmower or car door handle. The majority of non-remote transponder chip failures can be blamed on blowing fuses.

If you're able to open up a key fob that is sealed and can tolerate the mess, you can take off the circuit board and examine the fuse with an instrument to verify diode function. If you're unsure about doing this, lock and key repair near me (Www.51jinqu.com) head to your local hardware store or Oreilly's, and they will usually have a radio frequency tester that can let you know whether the key fob transmitting a signal.

Programming

Key fobs take many abuses and aren't indestructible. They may lose their connection to the receiver in your car due to shock or low battery, which requires them to be reprogrammed. A professional auto locksmith, car Keys repairs near me or a dealer in the main can reprogram the key fob and get it back working again. In the rarer case that resetting and repairing your key fob fails, it could be time to replace it all over again.