Car Remote Key Repair
Modern car remote keys are useful and convenient, however they can be a hassle when they stop functioning. There are some quick solutions to get them back in operation.
Replace the battery first. The majority of fobs are powered by lithium coin cells. They are inexpensive and readily available.
Broken Electronics
The electronic circuit board in your remote car key transmits and interprets signals for your vehicle. If the circuit board is damaged the key fob won't function properly. Contrary to battery failure, which is usually fairly simple for most drivers to fix at home, damage to the transmitter or receiver of your remote key will require a professional auto locksmith or your dealer in the car.
Most remote key fobs are powered by a lithium-ion coin battery, which has a long shelf life. However they won't last for long. Changing the batteries will likely solve the issue, particularly if you've had them for a while. If you've been using your remote fob for a long time you may be shocked to find that the buttons aren't responding even though the batteries are fresh. Since the buttons on your key fob get a lot of jostling and can fail or cease to function over time. In this situation, taking off and cleaning the buttons is usually enough to fix the problem.
If the buttons on your remote still aren't responding, you may have to change the programming to match your car's system. This is typically done by turning the key in the ignition several times with the doors closed. The procedure will differ based on the model and make however, you will be able to locate instructions online or ask a professional for assistance.
If the key fob is made of a plastic exterior it is possible to remove the cover and then pry it off. Be careful not to scratch any buttons or internal components. This is best done using needle-nosed pliers which have longer tips. They are able to grasp small parts. Lubricating the pliers using super glue, melted tallow or putty can assist them to grasp delicate components. It's recommended to hire an automotive locksmith take care of this, since improper techniques could damage the electronic components inside. Trying to forcefully pry the fob apart could damage the plastic, and it's also possible to accidentally snap off any buttons attached to it.
A defective transponder chip
If you've managed to 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 your key relies on this tiny electronic component to communicate with the immobilizer system. It sends a signal to the system to let it know that your key is valid, and you'll be able to begin the vehicle. If the chip does not properly transmit this message, the immobilizer disables your vehicle.
This problem is more frequent in older cars, however it is also a problem in modern vehicles. This is due to the transponder chip may wear out over time. This part can be replaced by a locksmith for cars, but it is expensive.
In some instances the chip inside your key may be completely dead. If this is the case, it will require replacement by an authorized dealer. This is the most expensive but essential option to get your car back on the road.
Another possibility is that the chip in your key has become corrupted and it is unable to longer communicates properly with the immobilizer system. This could happen when the battery is replaced or if your key is physically damaged. A Mesa auto locksmith can fix this issue, but you may have to visit the dealership to have your key programmed.
If you're having problems with your remote key the first thing you should consider is an alternative. If this does not solve the issue, you should take apart your key fob and perform a visual examination. It is important to ensure that none of the buttons appear to be broken or loose. These parts get frequent use and may be jostled loose over time. If they are loose it is a good idea to have them re-soldered by an expert. In most cases, this will restore your key fob to full functionality. This is especially the case for keys that have been accidentally inserted into the wrong ignition lock cylinder.
Damaged Battery
If you've tried a brand new battery, but the key fob is still unable to work, there could be other issues. Fobs can be damaged by water, or dropped or stepped on. Internal connections, such as those that connect to the battery terminals on the remote, can also be damaged or disconnected. It's possible that you need to change the programming of the key fob, and this may be something you can tackle on your own if you have a spare fob from the same model and manufacturer.
Modern key fobs need to be programmed to work with your vehicle and ensure that only you are able to unlock the car doors. This is a crucial step to safeguard your vehicle and to prevent others from using your key fob to gain access to your vehicle or cause electrical system issues. Certain engine error codes, or even normal wear and tear can cause problems with the programming of your key fob. It is crucial to have your key fob reset professionally by a professional with the appropriate equipment.
It's possible that the problem lies with the buttons, which is a much simpler fix than replacing the whole key fob. Key fobs typically have rubberized buttons that are tossed around all the time and could break or get loose. If you see that the buttons don't appear to be damaged, you might be able to manually adjust them.
Open the fob that you are using to examine it, but be careful. Some key fobs do not have an easy release mechanism. You might require a small tool or screwdriver to remove them. car key and repair are sealed and are not openable without special tools. You'll need to take them to a professional to have them professionally opened. You can use a spare keyfob from the same model and make to access the programming mode of your vehicle. Depending on the car you drive this could mean closing and locking the doors, switching lights and electronic devices on and off, and pressing a specific set of buttons in a certain sequence.
Failing Buttons
If your key fob has buttons that do not function or require to be press very hard to work, it could be the result of mechanical damage. The key fob's functionality can be damaged by dropping it onto concrete or accidentally hitting the button with a sharp item. It is necessary to remove the key fob and carefully look at it to determine whether there are any buttons that look damaged. A locksmith can fix it for you if that's the case.
Failure of buttons could be caused by dirt or crud that is trapped between the buttons. Clean your key fob with an swab of cotton that has been immersed in alcohol. It is also possible to clean the surface of the keys themselves. You should also try to determine if the problem is with the locks of your car or the key fob itself. If you don't have a spare key fob to test, consider using the keys in a different vehicle to determine 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 is not able to function after replacing the batteries, it most likely indicates that the battery's terminal contacts are damaged. Pressing the buttons on your key fob repeatedly while out of range or disconnecting your car battery can also deprogram an electric key fob.
If the key fob not working after replacing the battery, have it reprogrammed by your car. This will be dependent on the particular model of vehicle and the type of key fob you have, but generally, you'll have to manually lock and unlock the car's doors by inserting the key fob into the ignition, rotate it to the accessory position and push a button on the remote. If this is working, the exterior and/or interior lights should light up. You can test the key fob in order to verify that it was successfully programmed. In less rare cases the key fob may not function if there is an issue with the door lock itself.