Car Remote Key Repair
Modern car remote keys are useful and convenient, but they can be frustrating when they stop functioning. There are a few easy solutions to get them working again.
The first step is to replace the battery. Most fobs use lithium coin cells, which are cheap and readily available.
Broken Electronics
Your car key remote has an electronic circuit board inside that transmits and interprets signals to your vehicle. If the board is damaged the key fob will not perform as it should. Damage to the receiver or transmitter will require a professional auto-locksmith or your car dealer.
Most remote key fobs use lithium ion coin batteries which have a decent time-to-life, but won't last forever. If you've been using the batteries for a long time replacing them is likely to solve the issue. You might be shocked if you've been using your remote for some time and the buttons don't respond in any way. This is true even when the batteries are brand new. The buttons on your keyfob are subjected to a lot of bouncing and may break or become unresponsive with time. If this is the case taking them off and cleaning them prior to placing them back in place will usually resolve your issue.
If the buttons on your remote don't respond, you may require reprogramming it to match the system of your car. This is usually done by turning the key in the ignition several times with the doors closed. The procedure will differ based on the car's model and make, but you will be able to locate instructions online or contact an expert for assistance.
If the key fob has a plastic exterior, it's possible to remove the cover and pull it apart. But be careful not to damage the buttons or other internal components. The best tool to use to accomplish this is a pair of needle-nose pliers with longer tips that can more easily grasp small parts. Lubricating the pliers with super glue, melted tallow or putty can assist them to grasp delicate components. This is something that an automotive locksmith could perform, since the wrong methods could cause damage to the electronic components. The attempt to forcefully pull the fob off could damage the plastic, and it's possible to accidentally break the buttons that are connected to it.
A defective transponder chip
If you've been able to start your car successfully using the remote key, but it's not working ever again, it could be a sign of that there is a problem with your transponder chip. This is because the key relies upon the tiny electronic component to communicate with immobilizer system. It sends a signal to the system that your key is legitimate and you should be in a position to start the engine. If the chip fails to transmit this signal it will cause the immobilizer to disable your vehicle.
This problem is more frequent in older cars, however it is also a problem in modern vehicles. This is because the transponder chip may wear out over time. This component can be replaced by a locksmith for cars however, it can be costly.
In certain cases, the chip in your key might be dead. In this instance the dealer will have to replace it. This is the most expensive option, but is often necessary in order to get your car back on the road.
Another possibility is that your key's chip has become corrupted. This means that 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 fix this problem, but you may have to visit the dealer to have your key programmed.
If you're experiencing issues with your remote key the first thing you need to try is a backup. If this doesn't solve the issue, take apart your key fob and do an inspection. It is important to ensure that none of the buttons appear to be broken or loose. These parts are used a lot and can loosen over time. If they are loose it's best to get them soldered back in place by a professional. This can often make your key fob. This is particularly the case for keys that have been accidentally inserted into the wrong ignition lock cylinder.
Damaged Battery
If you've tried a fresh battery and the key fob doesn't function, there could be other issues. Fobs may be damaged by water, or dropped or stepped on. Internal connections, such as those that connect to the battery terminals of the remote, could also be damaged or disconnected. It's possible to reset the key fob and this may be something you can do yourself if you have a spare fob of the same model and manufacturer.
Modern key fobs need to be programmed to match the vehicle to ensure that only you are able to unlock the doors of your car. It's a necessary step to protect your car and keep others from using your key fob to gain access your car or cause problems with the electrical system. Certain engine error codes or even normal wear-and-tear can corrupt the program and stop your key fob from functioning. Professionals with the right equipment can reprogram your key fob properly.
It's possible that the issue is in the buttons that are a much more straightforward solution than replacing the entire key fob. Key fobs typically have rubberized buttons that are tossed 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.
It is best to open the key fob and take a look at it, but be aware. Some fobs aren't equipped with an easy release mechanism, so you may need a screwdriver or another device to open them. Some are sealed and cannot be opened with special tools, so you'll likely need to take it to a dealership to have it professionally opened. You can use a spare keyfob from the same make and model to access the programming mode of your vehicle. Depending on the car you drive this could mean closing and locking the doors, turning the lights and electronics on and off and pressing a certain set of buttons in a particular order.
Failing Buttons
Mechanical damage may be the reason when the buttons on your key fob don't function or require you to press them very forcefully. The key fob's function could be damaged by dropping it onto concrete or accidentally hitting an item with a sharp item. If this is the case you'll need to disassemble the key fob and examine it carefully to determine if any buttons appear to be broken or out of their place. A locksmith can repair it for you if that's the case.
The failure of buttons can be caused by dirt or crud that is trapped between the buttons. Clean your key fob with a cotton swab that has been immersed 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 own a spare key, try using the keys of a different vehicle to determine if it works.
Whether or not the key fob needs to be reprogrammed is also dependent on the condition of its battery. If key repair near me does not work after replacing the batteries the terminal contacts of the battery could be damaged. Pressing the buttons on your key fob too often when you are out of range, or disconnecting your car battery could also erase the programming of an electric key fob.
If the key fob does not work after replacing the battery you need to re-programme it to your car. It will depend on the specific vehicle model, but you'll generally have to lock and unlock the doors manually. Simply insert the key into the ignition, change it to accessory, then press the wireless remote. If this works the exterior and/or interior lights will flash. Then, you can test your key fob to verify that it has been successfully programmed to the vehicle. In rarer cases the key fob might stop working due to problems with the door lock.