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How to Fix a Key Fob That isn't Working

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

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

Battery

It is not unusual for the battery in the car key fob to degrade. It is easy to replace a battery. However, it is important to select the right type. You can consult your owner's guide or contact the manufacturer to find out the right kind. It's also a good idea to examine the battery compartment with care since dead batteries may release caustic chemicals that could damage the remote. If changing the batteries does not solve the problem it could be because there are other issues that require attention from a professional. If the buttons are damaged or stuck for instance, it may be necessary remove the remote and rebuild each component. You could also try reprogramming your vehicle to recognize the new key fob.

Buttons

Due to repeated use, key repair car fobs can become worn and dirty. It is not unusual for buttons to stop working, or to require a hard press to get them working. This can be a hassle particularly when you're away from home and have to start your car. Fortunately, even worn-out or broken buttons can usually be fixed with a little time and some of the materials you may already have around the house.

First, make sure the batteries are charged correctly and that the indentation on the back of the button is filled. Take the remote apart and examine the circuit board. Examine for signs of rust or other signs that buttons are worn out or damaged, such as missing conductive paint. Use a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that have damaged or where conductive paint is missing. Be careful not to rub too hard, since this could cause damage to the conductive painting and prevent the button from firing when it is it is pressed.

Also, carefully check the battery connector's terminals to ensure a loose solder connection. If this is the case, connecting them back can bring back function to the button. The same method can be used to restore functionality to any other loose connections inside the fob.

In the end, if any of the rubber buttons on the front of the key fob stop working or require a hard press to work it is likely that the graphite disks at the back of the button are wearing down and require replacement. You can usually do this by rubbing a pencil over the disks. This should bring the button back to life.

If all of this doesn't help or if the button does not respond to a hard press It could be because the circuit board has gone bad. It is possible to fix the issue by cleaning and re-soldering the button, but you should have a spare in case it doesn't work.

Circuitry

If the key fob buttons are working, the circuit board inside your remote may be dirty. A thorough inspection is usually enough to fix this problem. The most common causes of dirty circuit boards are water and damaged cases. A damaged case can allow water and other debris to pass through and short out the electronic components. Water can also eat through pins and vias, which are the tiny connectors on the board.

If you're handy enough to remove your key fob and don't mind a little mess, we can remove the solder from the buttons and put new ones in their place. It's also worth examining the battery terminal connections. If they're loose, the buttons may not function or get stuck in their down position. Soldering the terminals back to their original positions is often enough to bring a non-working fob back to working.

Non-Remote transponder chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs. However, they can be cracked if a hole is drilled into them or when a door handle for a car or lawnmowers plows over them. Most of the time, non-Remote Key Repair transponder chip malfunctions can be attributed to blowing fuses.

If you're not confident opening the key fob, remove the circuitboard and utilize a multimeter to verify that the diode is operating properly. If you're unsure about doing this, go to your local hardware store or the Oreilly's and they usually have a RFID frequency tester that can tell you whether the key fob is sending a signal.

Programming

Key fobs aren't indestructible and can be 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 requires them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob to get it working again. In the rarer case that resetting and Remote Key Repair repairing your key fob doesn't work, it could be time to replace it entirely.