How to Repair Car Key Fobs
Even though we put them through many a times, key fobs are not indestructible. They can actually be destroyed in different ways.
The most frequent issue is the battery being dead but other issues can be more grave. Fortunately, the majority of these can be fixed with a quick DIY fix at home.
Dead Battery
A dead battery is probably the most common reason why the 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 usually stop glowing when the battery in the car key fob is running low. It's also possible that the fob won't function from the same distance it used to. In this case the key fob could need to be reprogrammed or replaced altogether.
Fortunately, replacing a car key fob battery is easy. First, you need to determine the kind of battery is used. The type of battery should be embossed in the side of your key fob. Google can help if you're not sure. Open the key fob along the seam once you've identified the battery type. Use a flathead screwdriver, or even your fingernail to break the two halves. Then, take out the old battery and insert a new one in its place. Insert the new battery so that the positive (+) face is facing the buttons on the fob.
Some drivers don't even realize that their fob has died until they lock or unlock their car and the buttons stop working. This can be fixed by reprogramming your fob. However it can be time-consuming and expensive. You can also contact roadside assistance to determine if they are able to jumpstart your car and get it back on the road.
If you have tried all of these options but your car won't start then it's time to call an expert. A trained technician can tell the computer in your car needs reprogramming, or if the fob is only in need of a new battery. They can also recommend a reliable auto shop to replace your key fob. Sometimes, however, a new fob might be the best solution.
Damaged Circuit Board
A key fob is able to withstand some physical abuse and is not impervious to destruction. The battery, circuit board, and buttons all get their fair amount of wear and tear with time and it's crucial to be vigilant and take care of them to keep your car key fob functioning well.
Check that the battery is still functioning on your key fob. If it is, replace the battery and check if it fixes your problem. If not, you'll have to remove the key fob and clean the contact surfaces. This can be a challenge because some key fobs don't have easy-release mechanisms to open them and you could harm your device if you try to force it apart. You can purchase a specific tool to open your key fob, however you should always follow the manufacturer's instructions to avoid damaging it.
A damaged or defective key circuit board for the fob is another frequent issue. This could be due to many things, including dirt or moisture getting into the battery compartment. Software issues or even an accidental firmware update can also cause this. If your key fob isn't functioning, you might think about getting it reprogrammed. This can be done by a locksmith that specializes in this kind of work.
Radio interference is another possibility. This could happen if there are other wireless devices that transmit on the same frequency as your key fob, like a radar detectors and home security systems. If this is the case, inquire with the other manufacturers of the device to ensure that your key fob's signal isn't affected by their signals.
It is also possible to replace a switch or another electrical component inside your key fob. There are online guides that will guide you through the process of fixing this yourself. It's important to be careful when doing this, as the circuit boards in your key fob are tiny and are susceptible to breaking when handled rough. If you do this yourself, be certain to use a top quality SMT switch and solder it to the correct place.
Out Buttons Out Buttons
Car key fobs are prone to quite a bit of wear and wear and tear. They are more prone to being dropped and spend a lot of time in your pocket or purse. This jostling can sometimes cause buttons to wear out or get stuck. A simple adjustment can fix the issue.
Most modern key fobs come with sensors on them that detect when they've been used. They're designed to detect this to decrease the chance of someone stealing your car. If the buttons on your key fob don't work when pressed, they are worn out and should be replaced.
Key fobs also contain an internal circuit board which transmits signals to your car. These signals include commands to unlock and lock your car, as well commands to start your engine. If your internal circuit board is damaged, then the key fob you have may not allow you to unlock your car or even start the engine. This kind of damage is usually caused by blunt force or water.
If you have to press the buttons harder than usual in order to get them to function, then your key fob buttons are becoming worn out. The fob may not be sending signals to your vehicle or have a shorter range.
Contact a locksmith immediately when you're unable to use your key fob for your car. They can tell if the key fob is damaged or if the cylinder of your ignition is worn out.
Fortunately, most key fobs for cars issues aren't very complicated or even serious. The best way to avoid being surprised by an unresponsive key fob is to keep an extra key in your possession at all times. You'll never be stranded due to a malfunctioning or lost key. Of course, if you do happen to lose your car key spare A locksmith can rekey it so that it works with the ignition in your car. They'll also be able to repair any internal damage that has been caused to the key fob.
Broken Case
The case for your key fob is more than just a place to store the buttons and battery. The case also houses the circuitry that executes all the electrical magic whenever you press a key fob button. This board receives the signal from your key fob and sends it to your car.
If the board is damaged or dead your key fob will not be able to function. Sometimes, a key fob that is dead may need to be reprogrammed which is something that your local auto locksmith or dealership can assist you with.
Another reason why your key fob may not be functioning is that the batteries are not working. The battery can be replaced at your home. The good news is that you can get an alternative battery on the internet or at a local auto parts shop since the batteries aren't limited to key fobs.
There are several ways to open up a key fob to get inside it, based on the kind. You can determine the kind of battery your key fob is using by conducting a quick online search. You can then purchase an alternative and take the old one out, and put the new one into.
The main concern when you repair the broken car key fob is that you don't want to damage the circuit board or buttons further. If you attempt to remove the key fob using an edge that is sharp like a screwdriver could damage the case or even scratch the plastic. A replacement case is inexpensive and you can find the entire fob including the electronics on eBay or Amazon for less than $40.
If your key fob does not function, make sure you've damaged the circuit board or batteries. If key repair car isn't the situation, a professional could repair it quickly and inexpensively. If not, it may be time to replace the fob. Make sure to verify the warranty on any fob replacement or used that you purchase online.