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 be sure that it’s not the backup remote Key Repair.

If the backup is able to lock and unlock your car doors then there is likely an issue with the main remote. The most common causes of key problems with your car remote are battery or circuitry issues.

Battery

The battery inside the key fob may get worn out over the course of time. It is simple to replace batteries. However, it is important to select the right kind. You can refer to the owner’s manual or contact the manufacturer to inquire about the right kind. It is also important to inspect the battery compartment, as dead batteries can leak toxic chemicals that could damage the remote. If replacing the battery does not fix the issue there could be other issues that require professional attention. For example, if buttons seem to be stuck or broken, it may be necessary to disassemble the remote and rework its components. You could also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs can get filthy and worn out due to frequent use. It is not uncommon for buttons to cease working, or to require a hefty press to get them working. This can be extremely frustrating, especially if you are away from home and need to start your vehicle. Fortunately, even worn-out or damaged buttons can be fixed with a bit of time and a few items you may already have around the home.

First, check that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and look at the circuit board. Examine for evidence of rust, or other indications that the buttons are damaged or worn. For example the paint that conducts electricity could be missing. Then, using the Q-tip, dipped in alcohol to gently clean any membrane contacts that are worn or have conductive paint missing. Do not rub too vigorously as this can damage the conductive paint and prevent the button from firing when you press it.

Also, be sure to check the battery connector terminals for an unattached solder connection. If this is the case, soldering them back in place can restore functionality to the button. The same process can be used to restore function to any loose connections inside the fob.

If, for instance, any of the buttons made of rubber that are on the front of the key fob have stopped working or require a long press to function it is likely that the graphite disks that are on the back of the button are wearing out and need to be replaced. You can usually do this by rubbing a pen across the disks. This should bring the button back to life.

If none of this is helpful, or if the button still doesn’t respond to a hard press, then it may be because the circuit board is damaged. This can be fixed with a quick clean and refitting, but it’s ideal to have a spare fob on hand in the event that this method doesn’t work for you.

Circuitry

The circuit board inside your remote control may be dirty, regardless of whether the buttons on the key fob work or not. The issue can be solved by a thorough inspection. Broken and damaged cases are the most common causes of dirty boards. A broken case allows water and other debris to enter and short circuit the electronic components. Water can also damage pins and connectors that are small on the board, which are known as via’s.

If you’re able to open your key fob key repair, and you don’t mind making a mess, we can take the buttons out of their sockets and put in new ones. It’s also worth checking the connections between battery terminals. They can get very filthy and if they’re not tight enough, the buttons may not work or may even remain in their down position. Soldering the terminals and buttons back into place is typically all it takes to restore keys that are not in functioning condition.

Non-Remote Transponder Chips

The sealed non-remote chips are more durable than remote fobs, however they are susceptible to cracking if a hole is drilled in them or if a repair car key door handle or lawnmower runs over them. Most of the time non-remote transponder chips fail, and this can be attributed to a blown fuse.

If you’re handy enough to open the sealed key fob and are able to bear the mess, you can remove the circuit board and examine the fuse with an instrument to verify diode function. If you don’t feel comfortable with this, you can go to your local Oreilly or hardware store and utilize their RF frequency tester. This will let you know whether the key fob is sending signals.

Programming

Key fobs aren’t impervious to destruction and are susceptible to damage by a variety of factors. They can lose their pairing to the car’s receiver due to shock or a low battery, requiring the reprogramming. A professional auto key repair locksmith or main dealer can reprogram your key fob and get it working again. In the event that resetting and fixing your key fob fails, it could be time to replace it completely.