Car Remote Key Repair
Modern car remote keys are very useful and convenient, but they can be a hassle when they stop working. Thankfully, there are some quick fixes that will usually bring them working again.
Replace the battery first. The majority of fobs are powered with lithium coin cells. They are inexpensive and readily available.
Broken Electronics
The electronic circuit board that is in your remote car key transmits and interprets signals for your vehicle. If this board is damaged, the key fob won't work correctly. Damage to the transmitter or receiver will require an auto-locksmith professional or your dealer in your car.
The majority of remote key fobs powered by a lithium ion coin batteries, which have an extremely long shelf life. However they won't last for a long time. The change of the batteries is likely to solve the issue, particularly if you've had them for a while. You may be surprised if you've used your remote for some time and the buttons don't respond at all. This is the case even when the batteries are brand new. Since the buttons on your key fob get a lot of jostling and rubbing, they may break or become unresponsive over time. If this happens removal of the buttons and cleaning them before reseating them will often resolve your issue.
If the buttons on your remote still aren't responding, you may require reprogramming it to work with the car's system. This is usually done by turning the ignition key several times with the doors shut. The process will vary depending on your car's make and model, but you should be able to find instructions online or consult a professional for help.
If the key fob has an exterior made of plastic, it's possible to remove the cover and pull it apart. However, be careful not to damage the buttons or other internal components. This is best done using needle-nosed pliers which have longer tips. They are able to easily grasp small components. Lubricating pliers with putty super glue or melted tallow can help them grasp delicate components. This is something that an automotive locksmith can use, since improper techniques could damage the electronics. The plastic can be broken when you attempt to remove the fob with force. It is also possible that the buttons attached to it will snap off accidentally if you try to forcefully break it.
Faulty Transponder Chip
Transponder chips could malfunction if you have previously had the ability to start your vehicle using the remote key but cannot do it again. This is because your key relies on this small electronic component to communicate with the immobilizer system. It sends the signal to the system to let it know that your key is valid and you'll be able to start your vehicle. If the chip isn't able to transmit this signal, the immobilizer will disable your vehicle.
This issue is most frequent in older vehicles however, it can happen in modern vehicles as well. This is because the transponder chip can wear out over time. The chip can be repaired by a car locksmith however, it can be costly.
In some instances the chip may be dead. In this case the dealer will have to replace it. This will be the most expensive option however, it is often required to get your car back on the road.
The other possibility is that the chip in the key has become damaged that means it no longer works properly with the immobilizer system. This could occur when the battery is replaced, or it can occur when there is physical damage to the key. A Mesa auto locksmith can resolve this problem, but you may need to go to the dealership to have your key programmed.
If you are having problems with your remote key, you must first attempt to backup your device. If this does not solve the issue, disassemble the key fob to perform a visual examination. Make sure all buttons appear to be damaged or loose. These parts are used a lot and may become loose as time passes. If they're loose it's recommended to have them reattached by a professional. This is often a way to make your key fob. This is especially applicable to keys that have been accidentally placed in the wrong ignition lock cylinder.
Damaged Battery
If the key fob still not working after you have tried a new one it could be due to a variety of other issues. Fobs may be damaged by water, or dropped or dropped on. Internal connections, like those that connect to the battery terminals of the remote, could also be broken or disconnected. It's possible to change the programming of the key fob, and this is something you can do on your own if you have a spare fob from the same model and make.
Modern key fobs need to be programmed to match the vehicle and ensure that only you can unlock the car doors. It's a necessary step to protect your car and keep others from using your key fob to gain access your vehicle or cause problems with the electrical system. Some engine error codes or even normal wear and tear could cause a problem with the programming of your key fob. It is essential to have your key fob reset correctly by a professional who has the right equipment.
It's also possible that the problem is with the buttons which could be a less complicated fix than replacing the entire key fob. Key fobs typically come with rubberized buttons that could be damaged or lose their elasticity over time. If you are able to see that the buttons aren't damaged you could try adjusting them manually.
Open the fob key to look at it, but be careful. Some fobs aren't equipped with an easy release mechanism, which means you may require a small screwdriver or other tool to break them. Some fobs are sealed, and are not openable without special tools. You'll have to bring them to a professional to have them professionally opened. If you have an extra key fob for the same model and manufacturer you want to use it, try using it to start your car's programming mode. This may require you to close and lock the doors, turn on and off the lights and electronics, and use a set of buttons in a specific order that is unique to your car.
Failing auto key repair
If your key fob has buttons that do not function or require to be pressing very hard in order to perform it could be because of mechanical damage. The key fob's functionality can be damaged by dropping it onto concrete or accidentally hitting a button by using a sharp object. If this is the case you'll need to disassemble the key fob and inspect it thoroughly to determine whether any of the buttons appear to be broken or are out of their place. A locksmith can repair it for you, if that's the case.
Failing buttons can also be the result of dirt or crud trapped between the buttons. You should clean your key fob using an swab of cotton that has been soaked in alcohol. It is also possible to clean the surface of the keys themselves. It is also important to determine if the issue is with your car locks or the key fob. If you don't own a spare key, you can try the keys in a different vehicle to see if it works.
The decision of whether or not the key fob requires to be reprogrammed depends on the condition of its battery. If your key fob is not able to operate after you replace the batteries, it likely indicates that the battery's terminal contacts are damaged. You can also reset your electric key fob by pressing the buttons too frequently when you are not in range or disconnecting your car's battery.
If the key fob is not working after replacing the battery, have it reprogrammed by your car. It will depend on your specific vehicle model, but generally you'll need to lock and unlock the doors manually, insert the key into the ignition, set it to accessory, and press the wireless remote. Usually the exterior and interior lights will light up if this has worked. You can then retest your key fob to ensure that it is successfully programmed with the vehicle. In rarer cases, the key fob may be inoperable due to a problem with the door lock.