How to Repair Car Key Fobs
Although we put them through numerous times, key fobs are not indestructible. They can be destroyed in a variety of ways.
Other issues could be more serious than an unresponsive battery. Many of these issues can be resolved with a simple fix at home.
Dead Battery
A dead battery is likely the most common reason a car key fob stops functioning. Fob batteries drain quickly, especially when they're exposed to extreme temperatures, humidity or water. Keep an extra battery in your wallet in case you need it.
The LED light will generally stop glowing when the battery in the car key fob is low. It's also possible that the fob will no longer work from the same distance it did in the past. In this case it might be necessary to re-program the key fob or replace it completely.
It is simple to replace a car keyfob battery. First, you need to determine the kind of battery is being used. The type should be engraved on the side of the fob. Google can help you in case you're unsure. Open the key fob along the seam once you have identified the battery type. Use a flathead screwdriver, or even your fingernail to pry apart the two halves. Remove the old battery and replace it with a new one. Make sure you insert the new battery with the positive (+) side facing up toward the buttons on the fob.
Some drivers don't realize that their fob has died until they lock or unlock their car and the buttons don't work anymore. In some instances this problem can be resolved by reprogramming the fob but that can be costly and time-consuming. You can also contact roadside assistance to determine whether they can jumpstart your vehicle and get it back on the road.
If you've tried both of these solutions and your car still won't start and you're not sure why, it's time to contact a professional. A certified technician can determine the computer in your car needs changing its programming, or if the fob simply needs replacement batteries. They can also recommend an auto repair shop that can replace the fob that you use to access your car. In the end, though sometimes, a brand new fob is the most effective solution.
Damaged Circuit Board
A key fob can take a lot of physical abuse and is not impervious to destruction. Battery, circuit board and buttons are all susceptible to wear and wear and tear. It is important to take care of these components to ensure your key fob remains in good condition.
The easiest way to test is to ensure that the battery inside your key fob isn't depleted. Replace the battery to see if it solves your problem. If not, you might need to open the key fob and clean the contact surfaces. It isn't easy to open some key fobs because they do not have an easy-release mechanism. You can damage your fob by trying to break it. You can purchase a specific tool to open your key fob, however it is recommended to adhere to the manufacturer's guidelines to avoid damaging it.
A damaged or corrupted key fob circuit board is a frequent issue. It can be caused by many things like moisture or dirt that gets into the battery compartment, software issues or even an accidental firmware update. If your key fob isn't working, you may think about getting it reprogrammed. This can be done by a locksmith who is skilled in this kind of work.
Radio interference is another possibility. This could happen if there are other wireless devices operating on the same frequency as your key fob, such a radar detectors and home security systems. If this is the case, consult with other manufacturers of the device to make sure that your key fob isn't affected by their signals.
It's also possible that your key fob has an issue with the switch or another electrical component that should be replaced. car key fob repair is a difficult fix, but you can find guides online that explain how to do it yourself. Be careful when doing this, however, because the circuit board in your key fob is very small and can easily break if handled with care. If you're doing this yourself, ensure you make use of an SMT switch of good quality and then solder the switch into place in a proper manner.
Buttons that are worn out
Car key fobs are prone to a lot of wear and wear and tear. They're prone to being dropped and are frequently jostled around in your pocket or purse. The jolting can cause the buttons to wear down or become stuck. A simple adjustment can fix the issue.
Most modern key fobs come with sensors that tell if they've been pressed. They're designed to detect this so that they can reduce the likelihood of theft by someone else of your vehicle. If the buttons on your key fob aren't responding when pressed, they are worn out and need to be replaced.
Key fobs also contain a circuit board inside them that sends signals to the car. These signals include commands to unlock and lock your car, and instructions to start the engine. If the internal circuit board is damaged, then your key fob will not unlock or start your engine. This kind of damage is typically caused by blunt force or water.
You'll notice that the buttons on your key fob are wearing out If you're finding yourself pressing the buttons more than normal to get them to function. Additionally, your fob may stop sending a signal to the car or it'll have less range than before.
Contact a locksmith immediately when you're not able to use your key fob to start your car. They can determine if your key fob is damaged or if the cylinder in your ignition is worn out.
Fortunately, most key fobs for cars problems aren't too difficult or serious. The best way to avoid getting taken by surprise by an issue with your key fob is to keep an extra in your pocket at all times. This will ensure that you're never left stranded somewhere due to an unreliable or lost key. Of course, if you do happen to lose your car key spare, a locksmith will be able to change the key so that it works with your car's ignition. They can also fix any internal damage to your key fob.
Broken Case
A key fob's case does more than just protect the buttons and battery. It also houses the circuit board that is responsible for all the electrical magic when you hit the button on your key fob. This board takes the signal from your key fob and transmits it to your car.
Your key fob will not work if this board is damaged. Sometimes, a dead key fob will just need to be reprogrammed, which is something your local auto locksmith or dealership can help you with.
Batteries may be the cause your key fob's battery not working. The battery can be replaced at home. You can purchase an alternative battery at your local auto parts shop or on the internet. These batteries are not only intended for key fobs.
There are several ways to open up a key fob to get inside it, based on the type. You can determine the type of battery your key fob uses by conducting a quick online search. From there, you can purchase a replacement and easily pop the old one out and the new one in.
The most important thing to consider when fixing the broken car key fob is that you don't want to damage the circuit board or buttons any further. If you attempt to pry away the key fob with the screwdriver or another sharp edge, it could crack the plastic or damage the case. Fortunately, a replacement for the case is inexpensive and you can get a whole fob assembly with the electronics from eBay or Amazon for less than $40.
If your key fob won't work, check if you have damaged the circuit board or the batteries. If that's not the case, a professional can repair it for you quickly and cost-effectively. If not, it may be time to replace the fob. Make sure you check for a warranty on any replacement or used fobs that you purchase on the internet.