Car Remote Key Repair
Modern car remote keys are useful and convenient, however they can be a hassle when they stop functioning. There are a few easy solutions to get them working again.
The first step is to replace the battery. The majority of fobs are powered by lithium coin cells. car key repairs are inexpensive and readily available.
Broken Electronics
The remote car key you have an electronic circuit board inside that transmits and interprets signals to your car. If this board is damaged, the key fob will not function properly. Damage to the transmitter or receiver will require an auto-locksmith professional or your car dealer.
The majority of remote key fobs are powered by a lithium-ion coin battery, which has an extended shelf life. However, they will not last for a long time. Change the batteries could solve your problem, especially those who have had them for a long time. You may be surprised if you've used your remote for some time and the buttons aren't responding at all. This is the case even if the batteries are new. Because the buttons on your key fob are subject to frequent jolts and rubbing, they may fail or cease to function over time. If this happens, removing the buttons, cleaning them, and reseating them will often resolve the problem.
If your remote's buttons still don't work, you may have to program it again to match the system in your vehicle. This is usually done by turning the key in the ignition several times with the doors shut. This will depend on the model and make of your car, but you can find instructions on the internet or consult a professional.
If the key fob is made of plastic, you can remove the cover by tearing it open. Be cautious not to damage any buttons or internal components. The best tool to accomplish this is a pair of needle-nose pliers with longer tips, which can more easily grasp small parts. Lubricating pliers with putty super glue or melted tallow can aid in grabbing delicate parts. This is something an automotive locksmith could use, since improper methods could cause damage to the electronics. If you try to forcefully break the fob apart could cause damage to the plastic, and it's possible to accidentally snap off the buttons that are attached to it.
Faulty transponder chip
If you've been able start your car using the remote key, but you're not able to do it again, it could indicate that there is a problem with your transponder chip. This is because the key relies upon the tiny electronic component to communicate with the immobilizer system. It transmits a signal to the system that your key is legitimate and that you are capable of starting the engine. If the chip fails to properly transmit this message, the immobilizer is disabled for your vehicle.
This issue is more prevalent in older cars, however it can also be found 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 instances the chip may be dead. If this is the situation, it's going to need to be replaced by an auto dealer. This will be the most expensive option but is often necessary in order to get your car back on the road.
Another possibility is that the key's chip has become corrupted. This means it can no longer communicate with the immobilizer. This could happen when the battery is replaced or when there is physical damage to the key. A Mesa auto locksmith can fix this issue, however you may need to go to the dealer to have your key programmed.
If you're experiencing issues with your remote key, you should first try a backup. If this does not solve the issue, take apart your key fob and examine it visually. Make sure all buttons appear to be broken or loose. These parts get lots of use and are easily moved around over time. It is best to have them welded to the correct position by a professional if they are loose. In many instances, this will return your key fob's functionality. This is particularly applicable to keys that were accidentally put into the wrong ignition lock cylinder.
Damaged Battery
If the key fob is still not working after you've tried a different one it could be due to other problems. Fobs may be damaged by water, dropping them or stepping over them, and the internal connections, like those that connect the battery terminals inside the remote, may be broken or disconnected. You may need to reprogram your key fob if you don't have a replacement similar kind and model.
Modern key fobs should be programmed to match the vehicle to ensure that only you can unlock the car's doors. This is a vital step to protect your vehicle and stop others from using your key fob to gain access to your vehicle or cause electrical system issues. Some engine error codes, or even normal wear and tear could cause a problem with the programming of your key fob. It is crucial to have your key fob reset professionally by a professional who has the right equipment.
It's possible that the issue is with the buttons themselves and this could be a simpler fix than replacing the entire key fob. Most key fobs feature rubberized buttons that are jostled around all the time, and may break or loosen. If you see that the buttons do not appear to be damaged, you may be able to manually adjust them.
Open the key fob to inspect it, but be cautious. Certain key fobs do not have an easy release mechanism. You may need a screwdriver or small tool to remove them. Some are sealed and can't be opened without specialized tools, so you'll likely need to take it to a dealership to have it opened professionally. You can use a spare keyfob that is the same make and model to access the programming mode of your vehicle. Depending on the car you drive, this may involve closing and locking the doors, switching the lights and electronics on and off and pressing a certain set of buttons in a particular order.
Failing Buttons
Mechanical damage could be the cause if your key fob's buttons don't function or require you to press them forcefully. Dropping the key fob on concrete or accidentally hitting one of the buttons with a sharp object can impact the way it works. You'll have to dismantle the key fob and look at it to determine if there are any buttons that appear to be damaged. A locksmith can repair it for you if this is the case.
Dirt or crud can also cause buttons to fail. It is essential to clean your keys regularly with the help of a cotton swab that has been soaked in alcohol. You may have to scrub the surface of the keys. It is also important to determine if the issue lies related to your car lock or the key fob. If you don't have an extra key fob to test, think about using the keys in a different vehicle to see if they work similarly.
The condition of the battery will also determine if you should change the programming of the key fob. If your key fob fails to operate after you replace the batteries, it likely indicates 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 cause the deprogramming of the electronic key fob.
If your key fob still isn't working after replacing the battery, you need to re-programme it to your car. This will be dependent on the particular vehicle model, but generally, you'll need to manually lock and unlock the car's doors, insert the key fob into the ignition, rotate it to the accessory position, and then push the button on the remote. If this is working, the exterior and/or interior lights will flash. It is then possible to test your key fob to verify that it has been successfully programmed with the vehicle. In rare instances, a key fob can not function if there is an issue with the door locks themselves.