Car Remote Key Repair

Modern remotes for cars are useful and convenient, however they can be a hassle when they stop working. Fortunately, there are quick fixes that will usually bring them back in operation.

The first step is to replace the battery. The majority of fobs utilize lithium coin cells, which are cheap and easy to find.

Broken Electronics

The remote car key you have an electronic circuit board inside that transmits and interprets signals to your car. The key fob will cease to function when the board is damaged. Unlike battery failure, which is typically quite easy for most drivers to fix at home Damage to the receiver or transmitter of the remote key will require a professional locksmith or your car dealer.

Most remote key fobs use lithium ion coin batteries, that have a long time-to-life, but won't last for long. If you've been using the batteries for a long time replacing them is likely to solve your problem. You might be shocked if you have been using your remote for some time and the buttons don't respond in any way. This can happen even in the case of batteries that are new. Since the buttons on your key fob are subject to frequent jolts, they can sometimes break or become inactive over time. If this is the case, removing the buttons and cleaning them before replacing them can often solve your issue.


If the buttons on your remote still aren't working, you might require reprogramming it to match the system of your car. This is typically accomplished by turning the ignition key several times with the doors shut. This will depend on the make and model of your vehicle, however you can find the instructions online or seek professional help.

If the key fob is made of plastic you can take off the cover by tearing it off. Be careful not to damage the buttons or other internal components. This can be done with needle-nosed pliers that have longer tips. They are able to easily grasp small components. Lubricating pliers with putty melted tallow or super glue will help them grasp delicate components. This is something an automotive locksmith could perform, since the wrong techniques could damage the electronics. The attempt to forcefully pull the fob off could cause damage to the plastic, and it's also possible to accidentally break any buttons that are connected to it.

Faulty Transponder Chip

Transponder chips may fail if you've previously had the ability to start your car with the remote key, but you are unable to do so again. This is because your key relies on this tiny electronic component to communicate with the immobilizer system. It sends the signal to the system to notify it that your key is valid, and you'll be able to begin the vehicle. If the chip isn't able to transmit this signal it will cause the immobilizer to disable your vehicle.

car key fob repairs is more prevalent in older cars, however it can also occur in modern vehicles. This is because the transponder chip can wear out over time. The chip can be replaced by a car locksmith however it is costly.

In some cases, the chip in your key may be completely dead. If this is the situation, it's going to need to be replaced by an auto dealer. This is the most expensive but necessary option to get your car back on the road.

Another possibility is that your key's chip has become corrupted. This means that it can no longer communicate with the immobilizer. This can happen when the battery is replaced, or if there is physical damage to the key. A Mesa car locksmith can sometimes repair this, however it is possible to visit a dealership for your key reprogrammed.

If you're having issues with your remote key the first thing you need to consider is a backup. If this doesn't resolve the issue, you should disassemble your key fob to perform a visual examination. Make sure that no button appears to be loose or damaged. These components are frequently used and may become loose over time. If they're loose, it's a good idea to have them re-soldered by an experienced professional. In many cases, this will restore your key fob's functionality. This is especially the case for keys that have been accidentally inserted into the wrong ignition lock cylinder.

Damaged Battery

If you've tried a brand new battery, but the key fob doesn't function, there could be other issues. Fobs could be damaged by water, or dropped or stepped on. Internal connections, including ones that connect to battery terminals of the remote, may also be damaged or disconnected. It's possible that you need to reset the key fob and this may be something you can accomplish by yourself if have a spare fob from the same model and brand.

Modern key fobs should be programmed to work with your vehicle, and ensure that only you can open the doors of your car. It's a must to safeguard your car and prevent others from using your key fob to gain access to your car or cause problems with its electrical system. Certain engine error codes, or even normal wear and tear can corrupt the programming of your key fob. It is essential to get your key fob reprogrammed professionally by a professional with the right equipment.

It's possible that the issue lies with the buttons that are a much simpler fix than replacing the whole key fob. Most key fobs feature rubberized buttons that get jostled around all the time and may break or loosen. If you're able to determine that the buttons aren't damaged, you can try adjusting them manually.

Open the key fob to inspect it, but take care. Some key fobs do not have a simple release mechanism. You might require a screwdriver or small tool to remove them. Others are sealed and can't be opened at all without special tools, so you'll likely have to bring it to a dealer to have it opened professionally. You can use a spare keyfob from the same make and model to enter the programming mode of your vehicle. This may require you to shut and lock the doors, turn on and off the lights and electronics, and press a series of buttons in a specific order that is unique to your car.

Failing Buttons

If your key fob has buttons that do not work or need to be pressed very hard to work it could be the result of mechanical damage. The key fob's function could be affected by a fall on concrete or accidentally hitting a button by using a sharp object. You'll need take apart the key fob, then examine it to see if there are any buttons that appear to be damaged. If that is the case, a locksmith can fix it.

Failure of buttons could also be the result of dirt or debris that has accumulated between the buttons. Clean your key fob with a cotton swab that has been immersed in alcohol. You may need to clean the surface of the keys. You should also determine if the issue is related to your car lock or the key fob. If you don't own an extra key, try the keys in another vehicle to determine if it works.

The condition of the battery will determine whether or not you have to change the programming of the key fob. If your key fob fails to operate after you replace the batteries, it most likely means that the battery terminal contacts are damaged. Pressing the buttons on your key fob too often while out of range or disconnecting your car battery can also erase the programming of the electronic key fob.

If your key fob still doesn't work after replacing the battery, you should have it reprogrammed to your car. It will depend on your particular car model, but you'll typically have to lock and unlock the doors manually, insert the key into the ignition, change it to accessory, and press the remote that is wireless. Usually the exterior and interior lights will flash if this method has worked. You can retest the key fob in order to verify that it was successfully programmed. In less rare cases the key fob may not function if there is an issue with the door lock itself.