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How to Repair Car Key Fobs

Key fobs can become damaged even if we utilize them frequently. In fact, they are able to be destroyed in a variety of ways.

While the most common issue is a dead battery but other issues can be much more grave. Most of problems can be fixed with a quick fix at home.

Dead Battery

A dead battery is the most frequent 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. Keep an extra battery in your wallet in case you require it.

The LED light will usually stop glowing when the battery in your car key fob is running low. It's also possible that your key fob won't function from the same distance as it used to. In this instance the key fob could require reprogramming or replaced altogether.

It is simple to replace a car keyfob battery. First, you need to determine the kind of battery is being used. The type should be engraved on the side of the fob. If you're not sure then a quick Google search will be helpful. Unlock the key fob along the seam once you have identified the battery type. You'll need a small flathead screwdriver or your fingernail to split the two halves. Remove the old battery, and replace it with a new one. Make sure car key fob repair insert the new battery with the positive (+) side facing towards the buttons in the fob.

Some drivers don't even realize that their fob is dead until they lock or unlock their car, and the buttons no longer work. In some instances this issue can be resolved by reprogramming your fob, however, it can be costly and time-consuming. You can also call roadside assistance to find out whether they are able to restart your car and get it 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 to call a professional. A trained technician can tell whether your car's computer requires changing its programming, or if the fob simply needs a new battery. They will also suggest a reputable auto repair shop to replace your fob's key. Sometimes an entirely new fob may be the best option.

Circuit Board Damage

Key fobs aren't impervious to destruction, but it can withstand a lot of physical damage. The battery, the circuit board buttons, and other components all suffer their fair share of wear and tear over the course of time It is therefore essential to be on guard and take care of them in order to keep your car key fob working efficiently.

Make sure that the battery still functioning in your key fob. Replace the battery to see if it solves your issue. If this doesn't work, you might need to open the 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 harm your fob by trying to break it. You can buy a special tool to open your key fob, however it is recommended to follow the instructions of the manufacturer to avoid damaging it.

Another common problem is a damaged or damaged circuit board inside the key fob. This could be due to numerous factors, such as moisture or dirt getting into the battery compartment. Software issues or an accidental firmware update can also cause this. If your key fob has stopped working completely, you should think about having it reprogrammed by locksmiths who specialize in this type of work.

Radio interference is another possibility. It could happen if are other wireless devices transmitting on the same frequency as your key fob, like a radar detectors and home security systems. If this is the case, you should check with the other manufacturers of the device to make sure that your key fob isn't being affected by their signals.

There may be a need to replace a switch or another electrical component of your key fob. You can find online guides that help you fix this yourself. You should be careful, however, as the circuit board in your key fob is small and could easily break if handled roughly. If you decide to do this yourself, be certain to use a top quality SMT switch and solder it into place properly.

Buttons that are worn out

Car key fobs can get a lot of wear and wear and tear. They're susceptible to being dropped and are frequently jostled around in your purse or pocket. The constant jostling can cause buttons to wear out or become stuck. Simple adjustments can resolve the problem.

The majority of modern key fobs have sensors on them that detect if they've been pressed. This is because they reduce the possibility of someone taking your vehicle. If your key fob's buttons aren't responding when you press them this is a sign that they're worn-out and need to be replaced.

Key fobs also have an internal circuit board which transmits signals to your car. These signals include commands to unlock and lock your car, as well commands to start your engine. If your internal circuit board is damaged, your key fob may not unlock your vehicle or even start the 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 when you press more than usual to get them to function. Your fob might not be sending signals to your car or have a lower range.


If you're unable to get your key fob to unlock or start your car, it's important to contact an emergency locksmith in your area. They can tell if the key fob is damaged or your ignition cylinder is worn out.

Fortunately, most car keyfob issues aren't very complicated or even serious. The best way to ensure you don't get surprised by an issue with your key fob is to have an extra key in your possession at all times. This will ensure that you're not left stranded somewhere due to a lost or malfunctioning key. If you do happen to lose your car key spare, a locksmith can help change the key to work with your car's ignition. They'll also be able to fix any internal damage that's occurred to your key fob.

Broken Case

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

Your key fob won't work if this board is damaged. Sometimes, a key fob that is dead can be reset which is something your local auto locksmith or the dealership can help you with.

Batteries may be the cause of your key fob not working. This is a simple solution that can be done at home by replacing the battery. You can purchase an alternative battery at the local auto parts store or online. These batteries aren't just for key fobs.

There are several ways to open the key fob and go inside it, depending on the kind. A quick search on the internet will identify the type of key fob yours is and what kind of battery it requires. From there, you can buy an alternative and then simply pop the old one out and put the new one in.

If you are repairing a damaged key fob, the primary concern is not to destroy the circuit or buttons in any way. If you attempt to remove the fob using a sharp edge, such as a screwdriver could break the case or scratch the plastic. Fortunately, a replacement case is cheap and you can purchase an entire fob with the electronics from eBay or Amazon for less than $40.

So, if your key fob doesn't work look into whether the batteries are depleted or if the circuit board is damaged. If that's not the case, a professional will fix it quickly and cheaply. In the event that it isn't, it's time to invest in an upgrade. Make sure you check the warranty on any replacement or used fobs that you purchase online.

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