Although we use them numerous times, key fobs are not indestructible. In fact, they could be destroyed in a variety of ways.
Other issues could be more grave than the battery being dead. The majority of problems can be fixed by a quick fix at home.
Dead Battery
A dead battery is likely the most frequent reason the car key fob stop working. Fob batteries tend to drain quickly, particularly if they are exposed to extreme heat or humid temperatures, or water. Keep Full Review in your wallet in case you need it.
The LED light will generally stop blinking when the battery in your car key fob is running low. The fob might also stop working from the same distance it was previously working to. In car key fob repair might be necessary to re-program your key fob or even replace it entirely.
Fortunately replacing the car key fob battery is easy. Find out the type of battery used. The type should be engraved on the side of the fob. If you're not sure it is, doing a quick Google search will help. Once you've identified the kind of battery you want you want to use, open the key fob near the seam. You'll need a small flathead screwdriver or even your fingernail pry the two halves apart. Then, take out the battery that was removed and replace it with an alternative one in its place. Make sure to insert the new battery with the positive (+) side facing upwards towards the buttons in the fob.
Some drivers might not be aware that their fob is dead until they attempt to lock or unlock their vehicle and the buttons aren't responding. In some instances this problem can be resolved by reprogramming your fob, but that can be costly and time-consuming. You can also call roadside assistance to determine whether they can jumpstart your vehicle and get it back on the road.
If you've tried every solution and your vehicle still won't start, it's time to contact a professional. A qualified technician can determine the computer in your car needs changing its programming, or if the fob is only in need of a new battery. They can also suggest an auto repair shop that can replace the key fob. In the end, sometimes a brand new fob is the most effective solution.
Damaged Circuit Board
Key fobs aren't indestructible, but it can endure a lot of physical damage. The battery, the circuit board buttons, and other components all suffer their fair amount of wear and tear over the course of time and it's crucial to be aware and take care of them to ensure that your car key fob operating efficiently.
Check that the battery is still working in your key fob. If it is then replace the battery and see if that fixes your issue. If not, you may require opening the key fob and clean the contact surfaces. It isn't easy to open some key fobs because they don't have an easy-release mechanism. You can damage your fob by trying to break it. You can purchase a special tool to open your key fob, however you should always follow the manufacturer's instructions to avoid damaging it.
Another issue that is common is a damaged or corrupted circuit board on the key fob. It can be caused by various factors, including dirt or moisture getting into the battery compartment. Issues with software or an accident firmware update could also cause this. If your key fob has stopped working completely, you should think about having it reprogrammed with locksmiths who specialize in this kind of work.
Radio interference is also a possibility. It could happen in the event that you have other wireless devices around that transmit on the same frequency, for example, radar detectors or home security systems. If this is the case, you should inquire with the other device manufacturers to make sure that your key fob isn't being affected by their signals.
It is also possible to replace a switch or another electrical component in your key fob. This is a harder fix, but you can find guides online that show you how to do it yourself. Be cautious when doing this, though because the circuit boards in your key fob are tiny and easily break in the event of rough handling. If you're doing it yourself, be sure to use an SMT switch of good quality and put the switch in place correctly.
Out Buttons Out Buttons
Car key fobs are prone to a lot wear and tear. They are prone to getting dropped and spend a lot time in your pocket or purse. This jostling can sometimes cause the buttons to wear down or become stuck. In this case an easy adjustment could be all that's needed to restore the button's functionality.
Modern key fobs come with sensors that are able to detect when they have been hit. This is because they lower the chances of someone stealing your vehicle. If your key fob's buttons aren't responding when pushed this is a sign that 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, and instructions to start the engine. If your internal circuit board is damaged, the key fob you have may not be able to unlock your vehicle or even start the engine. This type of damage is typically caused by blunt force or water.
If you have to press the buttons more than usual to get them to function, then your key fob buttons are becoming worn out. Additionally the fob might cease transmitting signals to the car, or have less range than it did prior to.
If you're not able to unlock your key fob, unlock or start your vehicle, it's crucial to contact a locksmith near you immediately. They'll be able to determine whether the key fob itself is damaged or your ignition cylinder has worn down.
Fortunately, most key fob issues in cars aren't serious or complicated. Keep an extra key fob in your vehicle at all times to avoid being surprised by a malfunctioning one. 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 rekey it to ensure it is compatible with the ignition of your car. They'll also be able repair any internal damage that may have occurred on the key fob.
Broken Case
The case of the key fob is more than just protect the buttons and batteries. The case also houses the circuitry that does all the electrical magic every time you press the button on your key fob. This board takes the signal from your key fob and sends it to your car.
If this board is damaged or dead the key fob won't be able to operate. A dead key fob may require reprogramming by your local auto locksmith or dealership.
Another reason why your key fob may not be functioning is that the batteries are dead. This is a quick solution that can be done at home by replacing the battery. The positive side is that you can find a replacement battery on the internet or at your local auto parts shop since the batteries aren't limited to key fobs.
Depending on the type of key fob, there are a variety of ways to open it up and access the insides. A quick search online should reveal what kind of key fob you have and the type of battery it uses. From there, you can buy the replacement and simply take the old one out, and then 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. When you try to break a key fob with an edge that is sharp like screwdrivers can cause damage to the case or damage the plastic. A replacement case isn't much and you can find the entire fob including the electronics on eBay or Amazon for under $40.
So, if your key fob isn't working look into whether the batteries are depleted or if the circuit board is damaged. If this is not the situation, you can get it repaired quickly and cheaply by an expert. If not, it could be time to consider a replacement. Make sure you check for a warranty on any used or replacement fobs you purchase online.
