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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 make sure it's not the backup remote.

If your backup remote cannot lock and unlock the doors of your vehicle, it is likely that the primary remote isn't functioning. The most frequent causes of key problems with your car remote are issues with the circuitry or battery.

Battery

The battery inside the key repairs fob may be worn out over time. It is relatively easy to change out batteries, but it is important to ensure that you choose the correct type that you can refer to your owner's manual, or mobile car key repair near me contact the dealer for the manufacturer to find out what kind of battery you require. It is also essential to inspect the battery compartment, since dead batteries can leak caustic chemicals that can harm the remote. If changing the batteries does not solve the issue it could be that there are other issues that require attention from a professional. If the buttons are damaged or stuck for instance it could be necessary to disassemble the remote and rework each component. You could also try reprogramming the vehicle to recognize the new key fob.

Buttons

Key fobs can get dirty and worn-out from frequent use. It is not unusual for buttons to cease working, or to require a long push to make them work. This can be very frustrating particularly when you're away from your home and you need to start your car. Even broken or damaged buttons are often fixable with a bit of time and tools you already have at home.

First, verify that the batteries are correctly placed and that the indentation on the back of the button is filled. Then, carefully remove the remote and inspect the circuit board. Look for indications of rust or other signs the buttons are damaged or worn out. For instance the paint that conducts electricity could be missing. Use a Q-tip dipped into rubbing alcohol to gently clean any membrane contact that is worn out or has conductive paint missing. Avoid rubbing too hard because this could damage the conductive paint and stop the button from firing when it is pressed.

Also, make sure to inspect the battery connector terminals for a loose solder connection. If this is the case, simply connecting them back could restore function to the button. You can apply the same procedure to restore functionality to any other loose connection in the fob.

In the end, if any of the buttons made of rubber that are on the front of the key fob have stopped functioning or require a difficult press to function it is likely the graphite disks that are on the back of the button are deteriorating and require replacement. You can do this by rubbing a pencil over the disks. This should bring the button to life.

If none of this is useful, or if the button doesn't respond to a hard press, then it may be the case that the circuit board itself has gone bad. It is possible to fix the issue by cleaning and re-soldering your fob, but you should have another spare in case it does not work.

Circuitry

If the keys fob buttons are functioning, the circuit board inside the remote could be dirty. This issue can be fixed by a thorough inspection. Water and broken cases are the most common causes of boards that are dirty. A damaged case could allow water and other debris to get into the circuit board, causing it to short out. Water can also eat away at pins and connectors on the board, referred to as via's.

If you're handy enough to open your key fob and aren't afraid of making a 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. If they are loose, the buttons may not function or get stuck in their down position. Soldering the terminals back to their proper positions is usually enough to return a malfunctioning fob to a working condition.

Non-Remote Transponder Chips

The sealed non-remote chips are more durable than their remote fobs, but they can be cracked if a hole is drilled into them or if a car door handle or lawnmower runs over them. The majority of non-remote transponder chips fail, and this can be blamed on a blown fuse.

If you're not comfortable opening the key fob, you may remove the circuitboard and use a multimeter to determine if the diode is functioning properly. If you're unsure about doing this, visit your local hardware store or Oreilly's, and they usually have an radio frequency tester that can determine whether the key fob is sending signals.

Programming

Key fobs are not indestructible and are susceptible to damage through a variety of causes. They may lose their connection to the receiver in your mobile car key repair near me (try these out) due to shock or a low battery, which calls for them to be reprogrammed. A professional auto locksmith, or a dealer in the main, can reprogram your key fob and get it back working again. If resetting or repairing your keyfob does not work, you may need to replace it.