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How to Repair Car Key Fobs

Although we use them a lot keys are not impervious to destruction. In fact, they are able to break down in many different ways.

While the most common problem is the battery being dead however, other issues could be more grave. Many of problems can be fixed with a quick fix at home.

Dead Battery





A dead battery is likely the most common reason the car key fob stops working. Fob batteries are known to drain quickly, especially when they are exposed or cold temperatures, humidity or water. Keep an extra battery in your wallet in case you require it.

The LED light will typically cease to blink when the battery in the car key fob is low. The fob may also stop working at the same distance it used to. In this case, 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, find out what type of battery is used. The type should be engraved on the side of the fob. If you're unsure it is, an easy Google search will help. Once you've identified the battery type you want to use, open the key fob at the junction. Utilize a flathead screwdriver or your fingernail to pry apart the two halves. Remove the old battery and replace it with a brand new one. Place the new battery in such a way that the positive (+) face is facing the buttons on the fob.

Some drivers may not realize their fob is dead until they try to lock or unlock their vehicle and the buttons aren't responding. In key fob repair near me can be resolved by reprogramming the fob but that can be costly and time-consuming. Another option is to call roadside assistance and see if they can jump your car and get you back on the road.

If you have tried all three of these methods and your car is still unable to start then it's time for a professional. A certified technician can determine if the car's computer system needs to be reprogrammed or the fob simply requires a new battery. They may also recommend 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

A key fob is not impervious to destruction, but it can be able to withstand a variety of physical damage. The battery, circuit board and buttons are all susceptible to wear and wear and tear. It is important to take care of these components to keep your key fob in good working order.

The easiest way to test is that the battery in the key fob isn't dying. If it is, replace the battery and see if that fixes your issue. If not, you may have to remove the key fob and clean the 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 can easily end up damaging your key fob if attempt to break it. You can purchase a specific tool for opening your key fob. However, you should adhere to the guidelines of the manufacturer to avoid damaging it.

A damaged or damaged key fob circuit board is another common problem. This can be caused by various factors, such as dirt or moisture that gets into the battery compartment software problems or even an unintentional firmware update. If your key fob is not functioning, you might think about getting it replaced. This can be done by a locksmith who is skilled in this work.

Radio interference is also a possibility. It could happen in the event that you have other wireless devices around that transmit at the same frequency, such as radar detectors or home security systems. If this is the situation you need to contact the other device manufacturer to ensure that your key fob will not be affected by their signals.

You may also need to replace a switch or other electrical component in your key fob. This is a more difficult fix however, you can find guides online that explain how to fix it yourself. Be cautious when doing this, however, because the circuit board inside the key fob is tiny and is prone to breaking if handled roughly. If you do this yourself, be certain to use a top quality SMT switch and solder it into place properly.

Worn Out Buttons

Car key fobs are prone to a lot wear and tear. They are susceptible to being dropped and spend a lot of time being jostled in your purse or pocket. The constant jostling can cause buttons to wear out or get stuck. A simple adjustment can solve the problem.

Modern key fobs are equipped with sensors that are able to detect when they've been pressed. This is due to the fact that they decrease the possibility of someone taking your vehicle. If the buttons on your key fob aren't responding when pushed this is a sign that they're worn-out and need to be replaced.

The circuit board inside 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 will not unlock or start your engine. Most of the time, this kind of damage is caused by water, force blunt, or something scratching the circuit board.

You'll be able to tell that the buttons on your key fob are wearing out If you're finding yourself pressing the buttons more than usual 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 if you are not able to use the key fob to access your car. They'll be able to determine whether the key fob itself is damaged or if your ignition cylinder has worn down.

Fortunately, the majority of car keyfob problems aren't too difficult or serious. The best way to avoid being taken by surprise by a malfunctioning key fob is to keep an extra key in your possession at all times. You'll never be caught in the middle because of a malfunctioning or lost key. Of course, if you do lose your spare car key, a locksmith will be able to reset it to ensure it is compatible with the ignition of your car. They can also fix any internal damage to your key fob.

Broken Case

The case of a key fob does more than just protect the batteries and buttons. The case also houses the circuitry that performs all the electrical magic when you press the button on your key fob. This board receives the signal from your key fob, and then transmits it to your car.

If the board is damaged or dead the key fob won't be able to operate. A dead key fob might require reprogramming by your local auto locksmith, or dealer.

Batteries could be the reason of your key fob not working. The battery can be replaced at your home. The good thing is that you can get the replacement battery on the internet or at a local auto parts store since these batteries are not exclusive to key fobs.

There are several ways to open the key fob and go inside, based on the type. You can find out what kind of battery your key fob has by conducting a quick internet search. From there, you can buy the replacement and simply take the old one out and put the new one in.

If you are repairing a damaged key fob, the main concern is not to destroy the circuit or buttons more. If you attempt to pry away the key fob with an instrument like a screwdriver or any other sharp edge, it could break the plastic or break the case. Fortunately, a replacement case isn't expensive and you can purchase a whole fob assembly with the electronics on eBay or Amazon for less than $40.

So, if your key fob doesn't work Check to see if the batteries are depleted or if the circuit board has been damaged. If this isn't the situation, you can get it repaired quickly and inexpensively by a professional. If not, it may be time to replace the fob. Make sure to verify the warranty of any replacement or used fobs that you purchase online.