Car Remote Key Repair
Modern remotes for cars 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. Most fobs use lithium coin cells, which are inexpensive and readily available.
Broken Electronics
The electronic circuit board in your remote car key transmits and interprets signals for your car. If the board is damaged the key fob will not function properly. Contrary to battery failure, which is generally very simple for most drivers to fix at home, damage to the receiver or transmitter of your remote key will probably require a professional locksmith or dealer for your car.

car key repairs of remote key fobs are powered by a lithium-ion coin battery, which has a long shelf life. However, they will not last for a long time. If you've used the batteries for a long time replacing them is likely to solve the issue. If you've been using your remote fob for a while and you're surprised to discover that the buttons don't respond even though the batteries are in good condition. Because the buttons on your key fob undergo a lot of jostling and can fail or cease to function over time. In this case, removing and cleaning the buttons will usually solve the issue.
If your remote's buttons don't work, you may have to program it again to match the system in your vehicle. This is typically done by turning the ignition key a few times while the doors are closed. The process will vary depending on the car's model and make, but you should be able to find instructions online or ask a professional for help.
If the key fob is made of plastic you can remove the cover by pulling it open. Be careful not to scratch the buttons or other internal components. The best tool to use to accomplish this is a pair of needle-nose pliers with longer tips, which will better grasp small components. Lubricating the pliers with super glue, melted tallow or putty can assist them to grasp delicate components. It's recommended to employ an auto locksmith perform this, as improper methods can damage the electronic components inside. If you try to forcefully break the fob apart could break the plastic, and it's also possible to accidentally break any buttons attached to it.
Faulty Transponder Chip
If you've been able to start your car using the remote key, but it's not working the next time, it could indicate a problem with the transponder chip. This is because the key relies on the 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 should be able start your vehicle. If the chip fails to correctly transmit this message the immobilizer will disable your vehicle.
This problem is more common in older vehicles however, it can happen in modern vehicles too. The transponder chip wears down 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 case, it will require replacement by a dealer. This is the most costly but essential option to get your vehicle back on the road.
Another possibility is that the key's chip has become corrupted. This means it can not communicate with the immobilizer. This could happen when the battery is changed or if the key is physically damaged. A Mesa auto locksmith can resolve this problem, but you may need to go to the dealer to have your key programmed.
If you're having issues with your remote key, the first thing to do is to create an alternative. If this doesn't resolve the issue, disassemble your key fob and do a visual examination. Verify that nothing on the button appears to be loose or damaged. These parts see frequent use and may be lost over time. If they're loose it's a good idea to have them soldered back in place by an expert. This can often restore the functionality of your key fob. This is especially true for keys that were accidentally placed into the wrong ignition lock.
Damaged Battery
If the key fob is still not working after you've tried a new one, it could be due to a variety of other issues. Fobs could be damaged by water, or dropped or stepped on. Internal connections, such as ones that connect to battery terminals in the remote, may also be broken or disconnected. It is possible to change the programming of the key fob, and this may be something you can do by yourself if have a spare fob of the same model and manufacturer.
Modern key fobs must be programmed to match the vehicle to ensure that only you are able to unlock the car's doors. This is a vital step to protect your vehicle and to prevent others from using your key fob to gain access to your vehicle or cause electrical system malfunctions. Certain engine error codes or even normal wear and tear can alter the programming and stop your key fob from working. Professionals equipped with the right tools can reprogramme your key fob in a proper manner.
It's also possible that the problem is with the buttons, which can be a simpler solution 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.
It is best to open the key fob and take a look at it, but be aware. Some fobs don't have an easy release mechanism, so you may need a screwdriver or other tool to pry them apart. Some fobs are sealed and cannot be opened without the use of specialized 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 brand to start the programming mode of your car. Based on the model of your car 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 specific order.
Failing Buttons
Mechanical damage may be the reason if the buttons on your key fob don't function or require pressing them extremely in a very forceful manner. Dropping the key fob onto concrete or accidentally hitting one of the buttons with a sharp object could affect how well it functions. If this is the case you'll need to take the key fob apart and inspect it thoroughly to check whether any of the buttons appear be broken or are 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 trapped between the buttons. It is important to clean your keys regularly using an alcohol-soaked cotton swab or a cotton swab. alcohol. You may need to clean the surface on the keys. You should also determine if the problem is related to your car lock or the key fob. If you don't own a spare key, try the keys in a different vehicle to determine if it works.
The decision of whether or not the key fob needs to be reprogrammed is also dependent on the condition of the battery. If your key fob is not able to function after replacing the batteries, it likely indicates that the battery's terminal contacts are damaged. Pressing the buttons on your key fob too often when you are out of range, or disconnecting your car battery can also erase the programming of the electronic key fob.
If your key fob does not work after replacing the battery you must have it reprogrammed for your car. It will depend on the vehicle model and the type of key fob you have, but generally, you'll have to manually lock and unlock the car's doors, insert the key fob into the ignition, rotate it to the accessory position and push the button on the remote. Usually the exterior and interior lights will light up if this method has worked. It is then possible to test your key fob to verify that it is successfully programmed with your vehicle. In rare cases the key fob could be inoperable due to an issue with the door lock.