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How to Fix a Key Fob That isn't Working

If your key fob isn't functioning, a few easy steps can fix it. The first step is to be sure that it's not your backup remote.

If your backup remote cannot unlock and lock the doors of your car, it is most likely that the primary remote isn't working. The majority of car key repair company remote key malfunctions are caused by battery or circuitry problems.

Battery

It is not unusual for the battery in the key fob for cars to wear out. It is easy to replace the battery. However it is crucial to select the right type. You can refer to the owner's manual or contact the manufacturer to find out the right type. It is also important to examine the battery compartment as batteries that are not working properly can release caustic chemicals which can damage the remote. If changing the batteries doesn't solve the problem, it may be that there are other issues that require professional attention. For instance, if the buttons seem to be stuck or broken, it may be necessary to take the remote apart and rework its components. You can also try reprogramming your car to recognize the new key fob.

Buttons

Due to frequent use, key fobs may wear out and become dirty. It is not uncommon for buttons to cease working, or to require a hard push to make them work. This can be extremely frustrating especially if you're away from 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 have been correctly placed and that the indentation on the back of the button is filled. Then, carefully open the remote and look at the circuit board. Look for indications of rust or other signs the buttons have been worn or damaged. For instance, conductive paint may be missing. Use a Q-tip dipped in alcohol, gently clean any membrane contacts that have damaged or where conductive paint is missing. Do not rub too vigorously as this can damage the conductive paint, and block the button from firing when you press it.

Check the battery connector's terminals carefully for any loose solder connections. Soldering them back in place can restore the button's functionality If this is the situation. The same process can be used to restore function to any other loose connections inside the fob.

In the end, if any of the rubber buttons on the front of the key fob aren't working or require a very difficult press to function it is likely that the graphite disks that are on the back of the button are deteriorating and require replacement. You can do this by rubbing a pen across the disks. This should bring the button to life.

If all of this doesn't help, or if the button still doesn't respond to a firm press, then it may be the case that the circuit board itself has become damaged. It is possible to fix this by cleaning and re-soldering the fob, but you should have a spare in case it doesn't work.

Circuitry

The circuit board in your remote key repair control could be dirty, regardless of whether the buttons on the key fob work or not. A thorough inspection will usually resolve this issue. The most common causes of dirty circuit boards are water and damaged cases. A damaged case can allow water and other debris to enter and short out the electronic components. Water can also damage pins and remote key repair vias, which are the tiny connectors found on the board.

If you're able to open up your key fob and don't mind some mess, we can take off the buttons and solder new ones in their place. Also, it's worth checking the connections between the battery terminals. If they are loose, the buttons may not function or get stuck in their down position. Soldering the terminals and Remote Key Repair button's back into place is typically all it takes to restore keys that are not in working condition.

Non-Remote Transponder Chips

The non-remote chips that are sealed are more durable than remote fobs, but they are susceptible to cracking when a hole is made in them or when a door handle for a car or lawnmower runs over them. The majority of non-remote car key repairs transponder chip failures could be attributed to blowing fuses.

If you're able to remove a key fob that is sealed and are able to bear the mess, you can easily remove the circuit board and examine the fuse using an instrument to verify diode function. If you're not comfortable doing this, go to your local hardware store or the Oreilly's and they will usually have an radio frequency tester that can determine whether the key fob sending signals.

Programming

Key fobs take many abuses and aren't completely indestructible. They may lose their connection with the receiver inside your vehicle due to shocks or a low battery, requiring reprogramming. A professional auto locksmith or a dealer in the main can reprogram the key fob and get it back working again. In the rarer case that resetting and fixing your key fob doesn't work it could be the time to replace it entirely.