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How to Fix a Key Fob That isn't Working

If your key fob won't work then you can fix it with a few simple steps. The first step is to be sure it's not the backup remote.

If the backup can lock and unlock your car door, then there's a likely issue with the main remote. Most problems with car remote keys result from circuitry or battery issues.

Battery

The battery inside a key fob can wear out over time. It is simple to replace a battery. However it is crucial that you choose the right type. You can consult the owner's manual or contact the manufacturer to determine the correct type. It is also important to inspect the battery compartment as batteries that are not working properly can release caustic chemicals which can damage the remote. If changing the batteries does not solve the issue it could be that there are other issues that require attention by a professional. For instance, if the buttons seem stuck or damaged It may be necessary to disassemble the remote and rework its components. You can also try reprogramming your car to recognize the new key fob.

Buttons

Key fobs may become dirty and worn out from frequent use. This is not unusual however, it can cause buttons to stop working or require a long press to function. This can be extremely frustrating especially if you're away from home and need to start your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and some of the materials you may already have around the house.

First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Then, open the remote Car key Repairs with care and look over the circuit board. Look for Repair key evidence of rust, or other signs the buttons are damaged or worn out. For instance the paint that conducts electricity could be missing. Utilizing the Q-tip, dipped in alcohol, gently clean any membrane contacts that are damaged or where conductive paint is missing. Don't rub too hard in order to damage the conductive paint, and block the button from firing when pressed.

Also, make sure to inspect the battery connector's terminals to ensure a loose solder connection. If this is the case, simply connecting them back could bring back function to the button. You can apply the same method to restore functionality to any other loose connection within the fob.

If any of the rubber buttons at the front of the keyfob are not functioning or require to be pressed extremely hard the graphite disks on the back of the button may have worn out and will need to replaced. It is usually done by rubbing a pen across the disks. This will bring the button back to life.

If none of these solutions work or you are unable to get the button to respond when pressed hard, it could be that the circuitry has failed. It is possible to fix this by a quick clean, and re-soldering, but it is recommended to have an additional fob in case this method doesn't work for you.

Circuitry

If the key fob buttons function the circuit board that is inside the remote could be dirty. The issue can be solved by a thorough inspection. Water and broken cases are the most frequent causes of dirty boards. A damaged case allows water and other debris to pass through and short circuit the electronic components. Water can also destroy pins and connectors that are small on the board, which are known as via's.

If you're able to open your key fob and aren't afraid of some mess, we can de-solder the buttons and put new ones in their place. It's also worth checking the connections between the battery terminals. They can get very dirty and if they're loose, the buttons may not work or even stick in their down position. Soldering the terminals, toolbarqueries.google.dk and putting the button back in their place is generally all that's required to return a non-working key fob to working order.

Non-Remote transponder chips

The sealed non-remote chips are more durable than their remote fobs, however they are susceptible to cracking when a hole is made in them, or if a car door handle or lawnmower runs over them. The majority of non-remote transponder chip failures could be attributed to a blown fuse.

If you're not comfortable opening the key fob, you may take the circuit board off and use a multimeter to determine if the diode is working correctly. If you don't feel comfortable with this, go to your local Oreilly or hardware store and test their RF frequency tester. This will inform you whether the key fob transmits signals.

Programming

Key fobs are subject to a lot of abuse and aren't completely indestructible. They can lose their pairing with the receiver in your vehicle because of shocks or a low battery, requiring reprogramming. A professional auto locksmith or the main dealer can reprogram the keyfob and get it working again. In the rarer case that resetting or repairing your key fob fails, it could be time to replace it entirely.