Car Remote Key Repair
Modern car remote keys are very useful and convenient, but they can be frustrating when they stop functioning. There are a few quick fixes to make them work again.
First, you should 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 circuit board is damaged, the key fob won't perform as it should. Unlike battery failure, which is generally very simple for most drivers to repair car keys at home damage to the transmitter or receiver of the remote key will require a professional auto locksmith or your repair car key remote dealer.
The majority of remotes that use key fobs have lithium ion coin batteries, which have a decent time-to-life, but won't last forever. The change of the batteries is likely to solve the issue, particularly those who have had them for a long time. If you've been using your remote fob for a long time you may be shocked to discover that the buttons aren't working at all, even when the batteries are new. Because the buttons on your key fob are subject to frequent jolts and rubbing, they may fail or cease to function over time. If this happens, removing the buttons and cleaning them prior to reseating them will often resolve the problem.
If the buttons on your remote don't respond, you may need to reprogramme it to match the system of your car. This is typically accomplished by turning the ignition key several times while the doors are closed. The process will vary depending on your car's make and model, but you will be able to locate instructions online or contact a professional for assistance.
If the key fob is made of an exterior made of plastic it is possible to take off the cover and then pry it off. Be careful not to damage the buttons or other internal components. This is best done using needle-nosed pliers which have longer tips. They can easily grasp small components. Lubricating pliers with putty, melted tallow or super glue can aid in grabbing delicate parts. This is something that an automotive locksmith can do, as incorrect methods could damage the electronic components. The plastic may break in the event that you forcefully pry apart the fob. It's also possible the buttons attached to it will be ripped off accidentally if forcefully pull it apart.
A defective transponder chip
If you've managed to start your car using the remote key, but not the next time, it could indicate an issue with the transponder chip. This is because your key relies upon this tiny electronic component to communicate with the immobilizer system. It sends a signal to the system that your key is valid and that you should be capable of starting the engine. If the chip fails to transmit this signal the immobilizer will shut down your vehicle.
This problem is more common in older cars, but it is also a problem in modern vehicles. The transponder chip wears down over time. The chip can be repaired by a car locksmith however it is costly.
In certain situations, your chip may be dead. In this situation the dealer will need to replace it. This is the most expensive but essential option 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 happen if the battery is replaced or if your key is physically damaged. A Mesa auto locksmith can resolve this issue, but you may have to visit the dealer to have your key programmed.
If you're experiencing issues with your remote key you should first attempt to backup your device. If this doesn't solve the problem, you should disassemble your key fob and conduct a visual inspection. It is important to ensure that there are no buttons that appear to be broken or loose. These components see lots of use and may be jostled loose over time. It is best to have them put in place by an expert in case they're loose. In most instances, this will restore your key fob's functionality. This is particularly true for keys that are accidentally placed in the wrong ignition lock cylinder.
Damaged Battery
If the key fob is still not working even after you've tried a new one, it could be due to other issues. Fobs may be damaged by dropping them or stepping on them, and internal connections, such as those that connect the battery terminals in the remote, may be broken or disconnected. It is possible to reprogramme your key fob if don't have a spare similar kind and model.
Modern key fobs should be programmed to match the vehicle to ensure that only you can unlock the doors of your car. This is a crucial step to secure your vehicle and prevent other people from using your key fob to gain access to your car or cause electrical system issues. Some engine error codes, or even normal wear and tear, could cause a problem with the programming of your key fob. It is crucial to get your key fob reprogrammed properly by a professional who has the appropriate equipment.
It's possible that the issue is with the buttons themselves, which can be a more straightforward fix than replacing the entire key fob. Key fobs typically have rubberized buttons which can be damaged or lose their elasticity over time. If you can see that the buttons aren't damaged, you can try adjusting them manually.
Open the fob key to look at it, but take care. Some key fobs do not have an easy release mechanism. You might require an instrument or screwdriver to pry them apart. Some fobs are sealed and are not openable without special tools. You'll have to bring them to a dealer to have them professionally opened. You can use a spare keyfob that is the same model and make to start the programming mode of your vehicle. Depending on your car this could mean closing and locking the doors, turning lights and other electronics off and on by pressing a particular set of buttons in a specific sequence.
Failing Buttons
If your key fob has buttons that don't work or require being pressing very hard in order to function, it could be the result of mechanical damage. The key fob's function could be affected by dropping it on concrete or accidentally hitting a button with a sharp object. It is necessary to remove the key fob, then examine it to see whether there are any buttons that appear to be damaged. If that is the situation, a locksmith will repair car key fob it for you.
Dirt or crud can also cause buttons to fail. You should clean your key fob with a cotton swab that has been submerged in alcohol. You may need to clean the surface on the keys. You should also try to determine if the problem is with your car's locks or the key fob itself. If you don't have a spare key fob to test, you might consider using the keys on a different vehicle to see if they function also.
The decision of whether or not the key fob should be reprogrammed is also dependent on the condition of its battery. If your keyfob does not work after replacing the batteries, the terminal contacts of the battery could be damaged. Pressing the buttons on your key fob repeatedly while you're out of range or disconnecting your car battery could also erase the programming of an electronic key fob.
If the key fob still not working after replacing the battery, you should get it reprogrammed with the car. It will depend on the type of vehicle, but generally, you'll need to manually lock and unlock the car's doors, insert the key fob into the ignition, rotate it to the accessory position, and then press a button on the remote. If this is working then the interior and exterior lights should light up. You can retest the key fob in order to confirm that it has been successfully programmed. In rare instances the key fob might not function due to an issue with the door locks.