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How to Repair Car Key Fobs
Even though we use them numerous times keys aren't indestructible. In fact, they could be destroyed in a variety of ways.
While the most common issue is the battery being dead, other issues can be much more serious. Most of these issues can be solved with a simple fix at home.
Dead Battery
A dead battery is the most common reason for a key fob that is not working. Fob batteries tend to drain quickly, especially if they are exposed or humid temperatures or even water. It's a good idea to keep an additional fob battery in your wallet in case.
You can usually tell that the battery of your car key fob is running low because the LED light will cease to blink. It's also possible that your key fob will no longer work from the same distance it used to. In this scenario the key fob could require reprogramming or replaced entirely.
Fortunately, replacing a car key fob battery is simple. Find out the kind of battery used. The type of battery should be embossed in the back of your key fob. If you are not sure then doing a quick Google search can help. Open the key fob across the seam after you have identified the type of battery. Make use of a flathead screwdriver or your fingernail to break the two halves. Then, you can remove the battery that was removed and replace it with the new one in its place. Make sure you insert the new battery with the positive (+) side facing up toward the buttons on the fob.
Some drivers don't even realize that their fob is dead until they lock or unlock their vehicle and the buttons no longer work. In some instances this issue can be resolved by reprogramming the fob but that can be costly and time-consuming. You can also call roadside assistance to determine whether they are able to start your vehicle and get it back on the road.
If you've tried both solutions and your vehicle still won't start, it's time to speak with a professional. A certified technician can determine if your car's computer needs reconfiguring, or if your key fob only requires replacement batteries. They can also recommend an auto repair shop that can replace your key fob. Sometimes it is possible that a new fob could be the best solution.
Circuit Board Damage
A key fob is not indestructible, but it is able to endure a lot of physical damage. The battery, the circuit board, and buttons all get their fair amount of wear and tear over time and it's crucial to be vigilant and take care of them in order to keep your car key fob operating efficiently.
The easiest way to test is to make sure the battery in your key fob isn't dead. If it is, replace the battery and determine if this fixes the problem. If not, you'll require opening the key fob and clean the contact surfaces. It is sometimes difficult to open some key fobs because they do not have an easy-release mechanism. You could cause damage to your fob by trying take it apart. You can purchase a special tool to open your key fob, however it is recommended to follow the manufacturer's instructions to avoid damaging it.
Another common problem is a damaged or faulty circuit board in the key fob. This could be due to numerous factors, such as dirt or moisture entering the battery compartment. Issues with software or an accident firmware update could be the cause for this. If your key fob is not working, you may think about getting it replaced. This can be accomplished by a locksmith who specializes in this type of work.
Radio interference is a different possibility. It could happen in the event that you have other wireless devices that transmit on the same frequency, like radar detectors or home security systems. If this is the case you must contact the other device manufacturer to ensure that your key fob won't be affected by their signals.
There may be a need to replace a switch or another electrical component in your key fob. This is a more difficult fix however, there are guides online that explain how to fix it yourself. Be cautious when doing this, though because the circuit boards that are inside your key fob are small and easily break if they are handled roughly. If you do this yourself, make sure to use a good quality SMT switch and solder it into place properly.
Buttons that are worn out
Car key fobs can suffer quite a bit of wear and tear. They are more prone to being dropped and spend a lot time being tossed around in your purse or pocket. Sometimes, this jolting can cause the buttons to wear out or snagged. In this case an easy adjustment could be all that's needed to restore the button's functionality.
Modern key fobs are equipped with sensors that detect when they have been hit. This is due to the fact that they decrease the chances of someone stealing your vehicle. If your key fob's buttons don't respond when pushed, that's an indication that they're worn-out and need to be replaced.
Key fobs also contain an internal circuit board which transmits signals to your car. These signals include commands to unlock and lock and instructions to start your engine. If the circuit board inside your vehicle is damaged, the key fob you have may not allow you to unlock your car or even start the engine. This kind of damage is typically caused by water or blunt force.
If you're having to press the buttons more than normal to get them to function the key fob's buttons are wearing out. In addition the fob might stop transmitting a signal to the car, or have a lower range than it did before.
If you're unable to get your key fob to unlock or start your car, it's important 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 out.
Fortunately, the majority of car key fob issues aren't serious or complicated. The best way to avoid being taken by surprise by an unresponsive key fob is to have an extra in your pocket at all times. This will ensure that you're never stuck in a bind due to an unreliable or lost key. Of course, if you do happen to lose your spare car key, a locksmith can help change the key so that it works with the ignition of your car. They can also fix any internal damage to your key fob.
Broken Case
A key fob's case provides more than just protection for the buttons and battery. It also houses the circuit board that is responsible for all the electrical magic when you hit a button on your key fob. The circuit board receives the signal from your key fob, and then transmits it to your car.
If this board is damaged or dead your key fob will not be able to operate. A dead key fob might only need to be reprogrammed by a local auto locksmith or dealer.
Batteries could be the cause of your key fob not working. The battery can be replaced at your home. The positive side is that you can get the replacement battery on the internet or at a local auto parts store, since the batteries aren't limited to key fobs.
There are many ways to open up a key fob to get inside it, depending on the kind. You can determine the type of battery your key fob is using by conducting a quick internet search. You can then buy an alternative and take the old one out and put the new one in.
When repairing car keys repair broken key fob, the primary goal is not to harm the circuit or buttons further. If you try to pry away the key fob with the screwdriver or another sharp edge, it can crack the plastic or break the case. Fortunately, a replacement for the case is inexpensive and you can purchase a whole fob assembly with the electronics on eBay or Amazon for less than $40.
If your key fob isn't working, check to see if the batteries are depleted or if the circuit board is damaged. If that's not the case, a professional can repair it quickly and inexpensively. If not, it could be time to replace the fob. Just be sure to check for a warranty on any used or replacement fobs that you purchase online.