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Car Remote Key Repair

Modern remotes for cars are useful and convenient, however they can be frustrating when they stop functioning. There are key repairs to get them back in operation.

The first step is to replace the battery. Most fobs are powered by lithium coin cells. These are cheap and easy to locate.

Broken Electronics

The electronic circuit board in your remote car key transmits and interprets signals for your vehicle. If the board is damaged, the key fob will not function properly. Damage to the receiver or transmitter will require an auto-locksmith professional or your dealer in your car.

The majority of remote key fobs are powered by a lithium-ion coin battery, which has a long shelf life. However, they will not last for long. Changing the batteries will likely solve the issue, particularly if you've had them for a long time. If you've been using your remote fob for a while you may be shocked to find that the buttons don't respond at all, even when the batteries are in good condition. The buttons on your keyfob are subjected to a lot jostling and can break or become inactive with time. In this case, removing and cleaning the buttons will usually solve the issue.

If key repair near me on your remote still don't respond, you may require reprogramming it to match your car's system. This is usually done by turning the ignition key several times while the doors are closed. This will depend on the make and model of your car, but you can find instructions on the internet or consult a professional.

If the key fob has an exterior made of plastic it is possible to remove the cover and pull it off. But be careful not to damage buttons or other internal components. This is best done with needle-nosed pliers that have longer tips. They can easily grasp small components. Lubricating pliers with putty melted tallow or super glue can aid in grabbing delicate parts. This is something an automotive locksmith could do, as incorrect methods could damage the electronics. Trying to forcefully pry the fob apart can cause damage to the plastic, and it's possible to accidentally cut off any buttons that are attached to it.

Faulty Transponder Chip

Transponder chips may malfunction if you've previously had the ability to start your vehicle using the remote key, but you are unable to do so again. This is because the key relies upon the tiny electronic component to communicate with the immobilizer system. It transmits the signal to the system to let it know that your key is in good condition, and you'll be able start the vehicle. If the chip fails to transmit this signal the immobilizer will shut down the vehicle.

This issue is more prevalent in older cars, but it is also a problem in modern vehicles. This is due to the transponder chip wears out over time. This component can be repaired by a car locksmith, but it is expensive.

In some cases, the chip in your key may be completely dead. In this case, the dealer will have to replace it. This will be the most expensive option, but is often required to get your vehicle back on the road.

Another possibility is that your key's chip is damaged. This means it can not communicate with the immobilizer. This can happen if the battery is changed or if your key is physically damaged. A Mesa auto locksmith can solve this issue, but you may need to visit the dealer to get your key programmed.

If key fob repairs experiencing issues with your remote key, you must first try a backup. If this doesn't fix the issue, take apart your key fob and perform a visual examination. Make sure that no buttons are loose or broken. These components see frequent use and are easily lost over time. It is recommended to have them soldered to the correct position by a professional in case they're loose. In a lot of cases, this will restore your key fob's functionality. This is particularly true for keys that were accidentally placed in the wrong ignition lock.

Damaged Battery

If you've tried a fresh battery but the key fob still won't function, there could be other issues. Fobs are damaged by water, dropping them or stepping on them, and internal connections, such as the ones that connect the battery terminals within the remote, could be broken or disconnected. It is possible to change the programming of the key fob, and this may be something you can tackle yourself if you have a spare fob from the same model and make.


Modern key fobs should be programmed to match your vehicle, and ensure that only you can open the doors of your car. This is a crucial step to secure your vehicle and to prevent other people from using your key fob to gain access to your vehicle or cause electrical system malfunctions. Some engine error codes or even normal wear and tear, could cause a problem with the programming of your key fob. Professionals equipped with the right tools can reprogram your key fob properly.

It's possible that the issue is with the buttons and this could be a less complicated fix than replacing the entire key fob. Key fobs typically have rubberized buttons that are tossed around all the time and could break or get loose. If you're able to determine that the buttons aren't damaged you might try manually adjusting them.

It is recommended to open the fob that you're using to look at it, but be aware. Certain fobs do not have an easy release mechanism, and you may require a small screwdriver or other tool to break them. Some are sealed and can't be opened with the use of specialized tools. You'll likely have to go to a dealership to have it professionally opened. If you have a spare key fob of the same model and manufacturer, try using it to start the mode of programming for your car. Depending on your car it could involve closing and locking the doors, switching the lights and other electronics off and on by pressing a particular set of buttons in a specific order.

Failing Buttons

Mechanical damage could be to blame if your key fob's buttons aren't working or require you to press them hard. Dropping the key fob on concrete or accidentally hitting a button with a sharp object could impact the way it functions. If this is the case you'll need to take the key fob apart and inspect it thoroughly to see if any of the buttons appear be damaged or are out of place. If that is the case, a locksmith can fix it.

Dirt and crud can cause buttons to fail. It is important to clean your keys frequently using a cotton swab soaked in alcohol. It is possible to clean the surface of the keys. It is also important to determine if the issue lies with your car locks or the key fob. If you don't have an extra key, try using the keys of a different vehicle to determine if it works.

The decision of whether or not the key fob needs to be reprogrammed depends on the condition of the battery. If your key fob doesn't function after replacing the batteries, the terminal contacts of the battery may be damaged. You can also deprogram your electric key fob by pressing the buttons too often when you are out of range or disconnecting your car's battery.

If the key fob still not working after replacing the battery, have it reprogrammed by your vehicle. This will be dependent on the particular vehicle model, but generally, you'll have to manually lock and unlock the doors of your car and then insert the key fob into the ignition, rotate it to the accessory position, and push the button on the remote. If this works then the interior and exterior lights will flash. It is then possible to test your key fob to verify that it is successfully programmed to the vehicle. In rarer cases, the key fob may not function due to problems with the door lock.

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