How to Repair Car Key Fobs
Key fobs are susceptible to damage even if we use them often. They can actually be destroyed in various ways.
The most frequent issue is an unresponsive battery but other issues can be much more grave. Fortunately, the majority of them can be resolved by making a quick DIY fix at home.
Dead Battery
A dead battery is the main cause of a key fob that is not working. Fob batteries can deplete quickly, especially when they are exposed or cold temperatures, humidity or water. Keep an extra battery in your wallet in case you need it.
You can usually tell when the battery in your car key fob is depleted because the LED light will cease to blink. It's also possible that the fob won't work from the same distance it did in the past. In this scenario, it may be necessary to re-program the key fob or replace it completely.
It is simple to replace the battery in a car keyfob. First, determine what kind of battery is being used. The type of battery should be engraved on the back of the fob. Google can assist you when you're not sure. The key fob can be opened along the seam after you've identified the type of battery. Utilize a flathead screwdriver or even your fingernail, to break the two halves. Then, remove the old battery and insert an alternative one in its place. Then, insert the new battery so that the positive (+) face is facing the buttons on the fob.
Some drivers aren't aware that their fob has gone out of service until they lock or unlock their car and the buttons stop working. In mobile key repair can be resolved by reprogramming the fob however, this can be expensive and time-consuming. You can also call roadside assistance to determine whether they are able to restart your car and get it back on the road.
If you've tried all the options but your vehicle doesn't turn on, it's time to contact an expert. A trained technician can determine if the car's computer system needs reprogramming or if the fob requires an upgrade in battery. They may also recommend an auto shop to replace your key fob. Sometimes it is possible that a new fob could be the best solution.
Damaged Circuit Board
The key fob isn't indestructible, but it is able to withstand a lot of physical harm. The circuit board, battery and buttons are all subject to wear and tear. It is essential to take care of these components to keep your key fob in good working order.
Verify that the battery still working on your key fob. Replace the battery to determine if it resolves your problem. If this does not work, you may have to open the fob and clean its contact surfaces. This can be tricky since some key fobs do not have easy-release mechanisms that allow you to open them up and you may damage your fob if you try to force it apart. You can purchase a specific tool to open your key fob, however you must always follow the instructions of the manufacturer to avoid damaging it.
Another common problem is a damaged or corrupted circuit board inside the key fob. This can be caused by many things like dirt or moisture getting into the battery compartment, software issues, or even an accidental firmware update. If your key fob has stopped working completely, think about having it reprogrammed by a locksmith that specializes in this type of work.
Radio interference is also a possibility. It could happen if are other wireless devices transmitting on the same frequency as your key fob, such radar detectors, home security systems. If this is the situation, you should get in touch with the manufacturer of the other device to make sure that your key fob will not be affected by their signals.
It's also possible that your key fob is equipped with a bad switch or other electrical component that should be replaced. There are online guides that guide you through the process of fixing this yourself. Be cautious when doing this, as the circuit boards that are inside your key fob are small and easily break in the event of rough handling. If you decide to do this yourself, be sure to use a high quality SMT switch and solder it into place properly.
Buttons that are worn out
Car key fobs can get a lot of wear and tear. They're prone to being dropped and often are frequently jostled around in your purse or pocket. The jolting can cause buttons to wear out or become stuck. Simple adjustments can resolve the problem.
Most modern key fobs have sensors on them that detect when they've been used. They're designed to detect this so that they can decrease the chance of someone stealing your car. If your key fob's buttons don't respond when pushed it's a sign that they're worn-out and need to be replaced.
Key fobs also have an electronic circuit inside that transmits signals to the car. These signals include commands to unlock and lock your car, and instructions to start the engine. If your internal circuit board is damaged, your key fob may not allow you to unlock your car or start the engine. This kind of damage is usually caused by blunt force or water.
You'll notice that the buttons on your key fob are wearing out when you press more than normal in order to get them working. The fob may also stop sending an alert to your car or have a smaller range.
Contact a locksmith right away when you're unable to use your key fob to access your vehicle. They'll be able to tell whether the key fob is damaged or the ignition cylinder is worn out.
Fortunately, most key fob issues in cars aren't too serious or complex. Keep a spare key fob in your car at all times to avoid being thrown off by a malfunctioning device. This will ensure that you're not left stranded somewhere due to the loss or malfunction of your key. If you lose your spare key an expert locksmith can rekey it to work with your car's engine. They can also repair any internal damage to your key fob.
Broken Case
The case of the key fob is more than just protect the batteries and buttons. The case also houses the circuitry that does all the electrical magic every time you press the button on your key fob. The circuit board receives the signal from your key fob and transmits it to your car.
If this board is damaged or dead the key fob won't be able to function. A key fob that is dead may only need to be reprogrammed by your local auto locksmith, or dealer.
Another reason your key fob might not be functioning is that the batteries are dead. The battery can be replaced at your home. The good news is that you can locate a replacement battery online or at your local auto parts store since these batteries aren't exclusive to key fobs.
There are several ways to open up a key fob and get inside, based on the type. You can determine what type of battery your key fob is using by conducting a quick online search. You can then buy an alternative and take the old one out, and then put the new one into.
If you are repairing a damaged key fob, the primary goal is not to harm the circuit or buttons in any way. 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. A replacement case is inexpensive and you can find an entire fob, including the electronic components on eBay or Amazon for under $40.
So, if your key fob doesn't work, check to see if the batteries are dead or if the circuit board has become damaged. If this isn't the situation, a professional could fix it quickly and cheaply. If not, it could be time to replace the fob. Make sure to verify the warranty on any fob replacement or used that you purchase online.