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How to Fix a Key Fob That isn't Working

If your key fob doesn't work, you can fix it by following just a few steps. First, ensure that it's not your backup remote.

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

Battery

The battery inside the key fob may get worn out over the course of time. It is easy to replace a battery. However, it is important that you use the correct kind. You can check your owner's guide or contact the manufacturer to inquire about the right type. 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 batteries does not solve the issue, it may be that there are other issues that require attention from a professional. For instance, if buttons seem to be stuck or broken it could be necessary to take the remote apart and rework its components. You could also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs may become filthy and worn out due to frequent use. This is not atypical, but it can cause buttons to cease working or require a hard press for them to work. This can be a hassle especially when you're away from your home and have to start your car. Even broken or damaged buttons are often fixable with a bit of time and materials you already have at home.

First, verify that the batteries are properly inserted and that the indentation on the back of the button is filled. Then, carefully open up the remote and look at the circuit board. Check for signs of rust or other indications that the buttons have been damaged or worn out. For instance there could be conductive paint missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has become damaged or has conductive paint missing. Be careful not to rub too hard, as this can erode the conductive paint and block the button from firing when it is pressed.

Examine the battery connector's terminals for loose solder connections. If this is the case, soldering them back in place can bring back function to the button. You can use the same procedure to restore functionality to any other loose connection inside the fob.

In the end, if any of the buttons made of rubber on the front of the key repair shops near me fob have stopped functioning or require a long press to function it is likely that the graphite disks on the back of the button are wearing down and require replacement. This is usually done by rubbing a pencil across the disks. This should bring the button back to working.

If none of these solutions work or you cannot get the button to respond when pressed hard, it could be that the circuitry is failing. It is possible to fix this issue by cleaning and re-soldering your fob but you should also have an extra in case it doesn't work.

Circuitry

The circuit board of the remote control could be dirty, regardless of whether the buttons on the key fob work or not. A thorough inspection is often enough to resolve this issue. Water and broken cases are the most common causes of boards that are dirty. A damaged case can allow water and other debris into the circuit board, which can cause it to short out. Water can also eat away at pins and small connectors on the board, which are known as via's.

If you're handy enough to open up your key fob, car key and repair and you're not afraid of some mess, we can take off the buttons and put new ones in their place. It's also worth examining the battery terminal connections. They can become very filthy and if they're not tight enough, the buttons might not function or even stick in their down position. Soldering the terminals and buttons to their proper positions is usually enough to bring a non-working fob back to working.

Non-Remote transponder chips

The non-remote chips that are sealed are more durable than remote fobs. However, they are susceptible to cracking if a hole is drilled in them or if a car door handle or lawnmower runs over them. The failure of the fuse is usually the cause of non-remote chip failures.

If you're not confident opening the key fob, you can take the circuit board off and use a multimeter to check that the diode is functioning correctly. If you're not comfortable doing this, go to your local hardware store or Oreilly's, Car Key And Repair and they will usually have an RF frequency tester that will tell you if the key fob is sending signals.

Programming

Key fobs are not indestructible and are susceptible to damage through a variety of causes. They can lose their pairing to the receiver in your Car key and repair because of shock or a low battery, requiring them to be reprogrammed. A professional auto key repair locksmith, or main dealer, can reprogram your key fob and get it back functioning again. In the event that resetting and fixing your key fob doesn't work it could be the time to replace it all over again.