Car Remote Key Repair
Modern car remotes are useful and convenient, but can be frustrating if they stop functioning. Fortunately, there are simple fixes that are able to get them back up and running.
The first step is to replace the battery. The majority of fobs are powered with lithium coin cells. They are inexpensive and readily available.
Broken Electronics
The electronic circuit board inside your remote car key transmits and interprets signals for your vehicle. The key fob won't function if this board is damaged. In contrast to battery failure, which is generally fairly simple for most drivers to repair at home, damage to the transmitter or receiver of your remote key will require a professional locksmith or your car 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 for long. If you've been using the batteries for a long period of time, changing them will probably solve your problem. If you've been using your remote fob for a long time you may be shocked to discover that the buttons don't respond in any way, even if the batteries are new. Because the buttons on your key fob undergo frequent jolts and rubbing, they may fail or cease to function over time. In this situation, taking off and cleaning the buttons will usually solve the issue.
If the buttons on your remote aren't working, you might have to change the programming to match the system of your car. This is typically accomplished by turning the ignition key several times while the doors are closed. This will depend on the model and make of your car, but you can find the instructions online or seek professional help.
If the key fob is made of a plastic exterior it is possible to remove the cover and pull it off. However, be careful not to damage the buttons or other internal components. The best tool to use for this is pliers with needle-nose tips with longer tips, which will better grasp small components. Lubricating the pliers using super glue, melted tallow or putty will help them grasp delicate components. It's also a good idea to have an auto locksmith perform this, as improper techniques can damage the electronic components within. The plastic could be damaged when you attempt to forcefully pry apart the fob. It's also possible any buttons connected to it could snap off accidentally if you forcefully pry it apart.
A defective transponder chip
Transponder chips could malfunction if you've previously had the ability to start your car with the remote key, but cannot do it again. This is because your key relies on this tiny electronic component to communicate with the immobilizer system. It signals the system that your key is legitimate and you should be able to start the engine. If the chip fails to properly transmit this message, the immobilizer will disable your vehicle.
This problem is more common in older cars, however it can also be found in newer vehicles. The transponder chip wears out over time. It is possible to hire a car locksmith replace this part of your key, but it can be costly.
In some instances, your chip may be dead. If this is the situation, it's going to need to be replaced by a dealer. This is the most expensive option but it is usually required to get your car back on the road.
Another possibility is that the key's chip has become corrupted. This means it can no longer communicate with the immobilizer. This can happen when the battery is replaced, or it can occur in the event of physical damage to the key. A Mesa auto locksmith can fix this issue, however you may have to visit the dealer to get your key programmed.
If you're experiencing issues with your remote key you must first try a backup. If this doesn't fix the problem, you should take apart your key fob and do an inspection. You should make sure that all buttons appear to be broken or loose. These parts get a lot of use and can easily be jostled loose over time. If they are loose it is a good idea to have them re-soldered by a professional. This is often a way to restore the functionality of your key fob. This is especially true for keys that are accidentally inserted into the wrong ignition lock.
remote car key repair
If the key fob is not working after you've tried a new one it could be due to other problems. Fobs can be damaged by dropping them or stepping over them, and internal connections, such as those that connect the battery terminals within the remote, may also be broken or disconnected. It's possible that you need to reprogram the key fob, and it could be something you can tackle by yourself if have a spare fob of the same model and make.
Modern key fobs should be programmed to match your car and ensure that only you have the ability to unlock the car's doors. It's a necessary step to safeguard your vehicle and prevent others from using your key fob to gain access to your vehicle or cause problems with the electrical system. Certain engine error codes, or even normal wear and tear can alter the programming and prevent your key fob from working. Professionals equipped with the right tools can reprogramme your key fob properly.
It's possible that the issue lies with the buttons, which is a much easier fix than replacing the whole key fob. Key fobs often have rubberized buttons which can be damaged or loosen over time. If you notice that the buttons do not appear to be damaged, you may need to adjust them manually.
It's best to open up the key fob and look at it, but be careful. Certain key fobs don't have an easy release mechanism. You may require an instrument or screwdriver to remove them. Some are sealed and cannot be opened without specialized tools, so you'll likely have to bring it to a dealer to have it opened professionally. If you have a spare key fob of the same model and manufacturer, try using it to access the programming mode of your car. Based on the model of your car, this may involve closing and locking the doors, switching the lights and electronics on and off, and pressing a specific set of buttons in a particular order.
Failing Buttons
Mechanical damage could be the cause when the buttons on your key fob don't function or require you to press them hard. Dropping the key fob onto concrete or accidentally hitting a button with a sharp object may alter the way it functions. You'll have to dismantle the key fob, then examine it to see if there are any buttons that appear to be broken. A locksmith can repair it for you if that's the case.
Dirt or crud can also cause buttons to fail. It is recommended to clean your keys fob using a cotton swab that has been submerged in alcohol. You may have to scrub the surface on the keys. It is also important to determine if the issue is with your car's locks or the key fob itself. If you don't have a spare key, you can try the keys in another vehicle to see if it works.
The condition of the battery will also determine whether or not you need to change the programming of the key fob. If your key fob doesn't work after replacing the batteries, the terminal contacts of the battery may be damaged. You can also deprogram your electronic key fob by pressing the buttons too frequently when you are out of range or disconnecting the battery in your car.
If your key fob still isn't working after replacing the battery, you should have it reprogrammed to your vehicle. It will depend on your specific car model, but you'll typically have to lock and unlock the doors manually. Simply insert the key into the ignition, change it to accessory, then hit the wireless remote. If this is successful then the interior and exterior lights should light up. You can then retest your key fob to confirm that it is successfully programmed with your vehicle. In rare instances the key fob may stop working if there is an issue with the door lock itself.