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How to Repair Car Key Fobs
Key fobs are susceptible to damage even if we use them a lot. They can break down in different ways.
Other issues can be more serious than the battery being dead. Fortunately, the majority of these issues can be solved by a simple DIY fix at home.
Dead Battery
A dead battery is the main cause of a key fob not working. Fob batteries can deplete quickly, particularly if they are exposed or humid temperatures or even water. It is a good idea to keep an extra battery in your wallet just in case.
You will usually know when your car key fob's battery is depleted because the LED light will cease to glow. The fob may also stop working at the same distance it used to. In this scenario, it may be necessary to re-program the key fob or replace it completely.
Fortunately the replacement of the battery in a car key fob is a simple task. Find out the type of battery that is used. The type should be engraved on the side of the fob. Google can help when you're not sure. Once you have found the kind of battery you want and the key fob, you can open it at the seam. Use a flathead screwdriver, or even your fingernail, to pry apart the two halves. Then, take out the old battery and insert an alternative one in its place. Place the new battery in such a way that the positive (+) face is facing the buttons on the fob.
Some drivers aren't aware that their fob is dead until they lock or unlock their vehicle and the buttons stop working. This can be fixed by reprogramming the fob. However it can be time-consuming and expensive. Another option is to call roadside assistance and see if they can jump your car and get you back on the road.
If you've tried all the options and your vehicle still won't start, it's time to call an expert. A certified technician can determine if your car's computer needs reprogramming, or if the fob is only in need of replacement batteries. They can also recommend an auto shop to replace your key fob. In the end, sometimes a brand new fob is the most effective solution.
Circuit Board Damage
Key fobs can withstand many physical abuses and is not indestructible. The battery, circuit board and buttons will all experience their fair share of wear and tear over the course of time and it's crucial to be vigilant and take care of them to keep your car key fob working well.
Make sure that the battery still working in your key fob. Replace the battery to see if it fixes your issue. If not, you may need to open the key fob and clean the contact surfaces. This can be a challenge since some key fobs do not have easy-release mechanisms to open them up, and you can easily end up damaging your key fob if try to pull it apart. You can purchase a specific tool to open your key fob, however you should always follow the instructions of the manufacturer to avoid damaging it.
A damaged or damaged key circuit board for the fob is another frequent issue. This can be due to various factors like moisture or dirt that gets into the battery compartment software problems or even an unintentional firmware update. If your key fob has stopped working completely, think about having it reprogrammed by locksmiths who specialize in this kind of work.
Radio interference is another possibility. This can happen if there are other wireless devices transmitting on the same frequency as your key fob, like radar detectors, home security systems. If this is the case, you should check with the other device manufacturers to ensure that your key fob's signal isn't affected by their signals.
You may also need to replace a switch or another electrical component inside your key fob. This is a more difficult fix however, there are guides online that explain how to do it yourself. You should be careful to be careful, however, since the circuit board in the key fob is tiny and could easily break when handled rough. If you're doing it yourself, ensure you use an SMT switch of good quality and solder the switch in the correct position.
Buttons that are worn out
Car key fobs are susceptible to a lot wear and tear. They are prone to getting dropped and spend a lot of time being jostled in your purse or pocket. Sometimes, this can cause buttons to wear out or stuck. When this happens, a simple adjustment may be all that's needed to make it work again.
The majority of modern key fobs have sensors on them that can tell if they've been pressed. This is because they reduce the chances of someone stealing your vehicle. If the buttons on your key fob aren't responding when you press them, they're damaged and should be replaced.
Key fobs also contain an internal circuit board that sends signals to the car. Those signals include unlock and lock commands and also instructions to start your engine. If the circuit board inside is damaged, then your key fob may not unlock or start your engine. This kind of damage is typically caused by water or blunt force.
You'll notice that the buttons on your key fob are wearing down if you find yourself pressing more than normal in order to get them working. Your fob might be unable to send an alert to your car or have a smaller range.
Contact a locksmith immediately if you are unable to use your key fob to start your car. They'll be able to tell whether the key fob is damaged or the ignition cylinder has worn out.
Fortunately, the majority of car keyfob issues aren't very complicated or even serious. Keep a spare key fob in your car at all times to avoid being thrown off by a malfunctioning key. You'll never be stranded because of an unresponsive or lost key. If you have lost your spare key, an expert locksmith can rekey it to work with your car's engine. They'll also be able repair any internal damage that may have been caused to the key fob.
Broken Case
The case of the key fob does more than just protect the buttons and batteries. It also houses the circuit board that is responsible for all the electrical magic when you press a button on your key fob. This board receives the signal from your key fob, and then transmits it to your car.
Your key fob won't work if the board is damaged. Sometimes a dead key fob will just need to be reset which is something that your local auto locksmith or the dealership can assist you with.
Batteries could be the reason the key fob's not working. The battery can be replaced at home. You can find an alternative battery at the local auto parts store or on the internet. These batteries aren't only intended for key fobs.
There are remote key fob repair to open up a key fob and get inside it, based on the kind. A quick search on the internet will show you which type of key fob yours is and what kind of battery it uses. You can then purchase a new replacement and pop the old one out, and then insert the new one into.
When repairing a broken key fob, the primary concern is not to destroy the circuit or buttons more. If you try to pry off the key fob with an instrument like a screwdriver or any other sharp edge, it could crack the plastic or break the case. Luckily, a replacement case isn't expensive and you can purchase an entire fob with the electronics on eBay or Amazon for less than $40.
So, if your key fob isn't functioning, check to see if the batteries are dead or whether the circuit board has been damaged. If that's not the case, a professional can repair it for you quickly and cheaply. If not, it could be time to consider an upgrade. Be sure to check the warranty of any replacement or used fobs that you purchase on the internet.