Modern car remote keys are useful and convenient, but they can be frustrating when they stop functioning. There are fortunately, simple fixes that are able to bring them working again.
First, you should replace the battery. Most fobs are powered by lithium coin cells. They are affordable and readily available.
Broken Electronics
The electronic circuit board inside your remote car key transmits and interprets signals for your car. If the circuit board is damaged, the key fob won’t perform as it should. Contrary to battery failure, which is typically fairly simple for most drivers to repair at home, damage to the receiver or transmitter of your remote key will require a professional auto locksmith or your car dealer.
The majority of remote key fob repairs key fobs utilize lithium ion coin batteries, which have a decent lifespan, but they won’t last forever. If you’ve been using batteries for a while replacing them could solve your issue. If you’ve been using your remote fob for a while, you might be surprised to find that the buttons aren’t working in any way, even if the batteries are new. The buttons on your keyfob are exposed to a lot of bouncing and can break or become unresponsive over time. In this case, removing and cleaning the buttons can fix the problem.
If your remote’s buttons still don’t work, you may have to re-program it to match the system in your vehicle. This is typically accomplished by turning the ignition key several times while the doors are shut. This will depend on the make and model of your vehicle, however you can locate the steps on the internet or ask a professional for assistance.
If the key fob is made of plastic you can take off the cover by pulling it open. Be careful not to damage any buttons or internal components. This can be done with needle-nosed pliers which have longer tips. They are able to easily grasp small parts. Lubricating the pliers using super glue, melted tallow or putty can help them grip delicate components. It’s also a good idea to have an automotive locksmith take care of this, as improper techniques could cause damage to the electronic components within. The plastic can be broken if you try to forcefully pry apart the fob. It’s also possible the buttons that are that are attached to it may be ripped off accidentally if try to forcefully break it.
A defective transponder chip
If you’ve been able start your car successfully using the remote key, but it’s not working the next time, it could indicate an issue with the transponder chip. This is because the key relies upon the small electronic component in order to communicate with the immobilizer system. It transmits a signal to the system that your key is valid and that you are able to start the engine. If the chip doesn’t correctly transmit this signal, the immobilizer will disable your vehicle.
This issue is common in older vehicles, but can also happen in more modern models also. The transponder chip wears down over time. It is possible to hire a car locksmith replace this component of your key, but it can be costly.
In certain cases the chip inside your key could be dead. If this is the case, it will require replacement by a dealer. This will be the most expensive option however, it is often necessary in order to get your car back on the road.
Another possibility is that the key’s chip is damaged. This means that it can no longer communicate with the immobilizer. This can occur when the battery is replaced or it can occur if there is physical damage to the key. A Mesa auto locksmith can resolve this issue, but you may need to visit the dealership to have your key programmed.
If you’re having issues with your remote key, you should first attempt to backup your device. If this doesn’t fix the issue, take apart your key fob and perform a visual examination. You should make sure that all buttons appear to be broken car key repair or loose. These parts get lots of use and can easily be moved around over time. If they are loose it is a good idea to have them soldered back in place by an experienced professional. In most instances, this will restore your key fob to full functionality. This is particularly true for keys that are accidentally placed in the wrong ignition lock.
Damaged Battery
If you’ve tried a new battery but the key fob is still unable to work, there may be other issues. Fobs can be damaged by water or dropped or stepped on. Internal connections, including ones that connect to battery terminals on the remote, could also be damaged or disconnected. It’s possible that you need to reprogram the key fob, and it could be something you can tackle on your own if you have a spare fob of the same model and brand.
Modern key fobs should be programmed to match the vehicle to ensure that only you can unlock the doors of your car. It’s a must to protect your car and prevent others from being able to use your key fob to gain access to your vehicle or cause issues with the electrical system. Some engine error codes or even normal wear and tear can corrupt the programming of your key fob. It’s important to get your key fob reprogrammed properly by a professional who is equipped with the appropriate equipment.
It’s possible that the issue is with the buttons, which is a much easier solution than replacing the entire key fob. Key fobs usually come with rubberized buttons that could be damaged or loosen up over time. If you see that the buttons do not appear to be damaged, you may want to adjust them manually.
It’s best to open up the fob that you’re using to look at it, but be cautious. Some key fobs do not have a simple release mechanism. You may need a small tool or screwdriver to break them. Others are sealed and can’t be opened at all without specialized tools, so you’ll likely have to bring it to a dealer to have it professionally opened. If you have an extra key fob for the same model and manufacturer use of it to start the programming mode of your car. This may require you to shut and lock the doors, switch on and off lights as well as electronics, and then press a series of buttons in a sequence that is specific to your vehicle.
Failing Buttons
Mechanical damage may be the reason if the buttons on your key fob don’t function or require you to press them forcefully. Dropping the key fob on concrete or accidentally hitting a button with a sharp object can affect how well it works. It is necessary to remove the key fob and carefully look over it to determine whether there are any buttons that look damaged. A locksmith can fix it for you if that’s 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. It is also possible to clean the surfaces of the keys. You should also determine if the issue lies with your car locks or the key fob. If you don’t have an extra key fob to test, you might consider using the keys on a different vehicle key repairs to see if they function as well.
The condition of the battery will also determine whether or not you have to reprogram the key fob. If the key fob you have is not able to function after replacing the batteries the terminal contacts of the battery may be damaged. Pressing the buttons on your key fob too often when you are out of range, or disconnecting your car battery could also cause the deprogramming of the electronic key fob.
If your key fob still does not work after replacing the battery you need to re-programme it to your car. It will depend on your specific car model, but you’ll typically need to lock and unlock the doors manually, insert the key into the ignition, turn it to accessory, then press the wireless remote. If this is successful, the exterior and/or interior lights should light up. Then, you can test your key fob to verify that it has been successfully programmed to the vehicle. In less rare cases keys can be inoperable if there’s an issue with the door locks themselves.
