How to Repair Car Key Fobs
Although we put them through a lot, key fobs are not indestructible. They are able to be destroyed in different ways.
Other issues could be more important than a dead battery. Fortunately, many of these can be fixed by making a quick DIY fix at home.
Dead Battery
A dead battery is likely the most frequent reason the car key fob stops functioning. Fob batteries drain quickly, especially if 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 low. It's also possible that your key fob won't function at the same distance it did in the past. In this case, the key fob may need to be programmed again or replaced entirely.
Fortunately replacing the battery in a car key fob is easy. Find out the type of battery that is used. The type of battery you are using should be engraved on the back of your key fob. If you are not sure it is, an easy Google search will be helpful. Once you have found the battery type and the key fob, you can open it at the seam. Use a flathead screwdriver, or even your fingernail, to break the two halves. Remove the old battery and replace it with a brand new one. 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 the fob. However it could be time-consuming and expensive. Another option is to contact roadside assistance and see if they are able to jump your car and get you back on the road.
If you've tried both solutions and your vehicle still won't turn on, it's time to contact an expert. A qualified technician can determine whether your car's computer requires changing its programming, or if the fob is only in need of a new battery. They will also suggest a reputable auto shop to replace your key fob. Sometimes an entirely new fob could be the best option.
Damaged Circuit Board
A key fob can take some physical abuse and isn't indestructible. The battery, the circuit board, and buttons all get their fair amount 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.
Check that the battery is still working in your key fob. If it is, replace the battery and see if that fixes your issue. If this does not work, you may need to open the fob and clean the contact surfaces. It can be difficult to open some key fobs since they don't have an easy-release mechanism. You may damage the fob by trying to take it apart. 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.
Another problem that is frequently encountered is a damaged or damaged circuit board in the key fob. It can be caused by a number of things, such as moisture or dirt that gets into the battery compartment, software issues or even an unintentional firmware update. If your key fob isn't working completely, consider having it reprogrammed by an expert locksmith who specializes in this type of work.
Radio interference is another possibility. This can happen if there are other wireless devices that transmit on the same frequency your key fob, for instance radar detectors, home security systems. If this is the case you must contact the manufacturer of the other device to make sure that your key fob won't be affected by their signals.
It's also possible that your key fob has an issue with the switch or another electrical component that must be replaced. This is a difficult fix however, there are online guides that will show you how to fix it yourself. You should be careful to be careful, however, since the circuit board inside your key fob is very small and can easily break when handled rough. If you do this yourself, be certain to use a top quality SMT switch and solder it in place correctly.
Buttons that are worn out
Car key fobs are susceptible to a lot of wear and tear. They are more prone to being lost and spend a significant amount of time in your purse or pocket. Sometimes, this jolting can cause buttons to wear out or become stuck. A simple adjustment can fix the issue.
go here have sensors on them that detect when they've been used. This is due to the fact that they decrease the chance of someone else stealing your vehicle. If the buttons on your key fob don't respond when you press them, they're worn out and need to be replaced.
The circuit board that is in the key fob also sends signals to your car. These signals include commands to unlock and lock your car, as well as commands to start the engine. If the internal circuit board is damaged, your key fob might not allow you to unlock or start your engine. This kind of damage is usually caused by water or blunt force.
You'll be able to tell that the buttons on your key fob are deteriorating when you press the buttons more than usual in order to get them working. Your fob might be unable to send signals to your vehicle or have a shorter range.
If you're not able to unlock your key fob, unlock or start your car, it's important to find an emergency locksmith in your area. They can determine if your key fob is damaged or if your ignition cylinder is worn out.
Fortunately, most key fob issues in cars aren't too serious or complex. Keep an extra key fob in your vehicle at all times to avoid being thrown off by a malfunctioning key. You'll never be stranded due to a malfunctioning or lost key. 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 repair any internal damage that has occurred on your key fob.
Broken Case
The case of the key fob does more than protect the buttons and batteries. It also houses the circuit board that is responsible for performing all the electrical magic when you press a button on your key fob. This board receives the signal from your key fob and sends it to your car.
If this board is damaged or dead, your key fob won't be able to function. A dead key fob may require reprogramming by your local auto locksmith or dealer.
Another reason why your key fob might not be functioning is that the batteries are not working. The battery can be replaced at home. You can get an alternative battery at the local auto parts store or on the internet. These batteries are not just for key fobs.
There are many ways to open up the key fob and go inside it, based on the kind. A quick search online should identify the type of key fob you have and what kind of battery it takes. From there, you can buy the replacement and simply take the old one out and put the new one in.
The most important thing to consider when fixing a broken car key fob is that you don't want to cause damage to the circuit board or buttons any further. If you attempt to pry apart the key fob using a screwdriver or other hard edge, it can crack the plastic or damage the case. Fortunately, a replacement for the case isn't expensive and you can get a whole fob assembly with the electronic components from eBay or Amazon for less than $40.
If your key fob isn't functioning, check to see if the batteries are dead or if the circuit board has become damaged. If this is not the situation, you can get it repaired quickly and inexpensively by a professional. In the event that it isn't, it's the time to purchase an upgrade. Just be sure to check for a warranty on any replacement or used fobs you buy online.