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5 Repair Car Key Lessons From Professionals
How to Repair Car Key Fobs

Key fobs can be damaged even if we utilize them a lot. In fact, they are able to break down in a variety of ways.

Other issues could be more grave than a dead battery. The majority of these issues can be solved with a simple fix at home.

Dead Battery

A dead battery is the most frequent cause of a key fob not working. Fob batteries are known to drain quickly, especially when they are exposed to hot or humid temperatures, or water. Keep an extra battery in your wallet in case you require it.

You can usually tell that the battery in your car key fob is dying because the LED light will cease to blink. It's also possible that the fob won't work at the same distance it did in the past. In this scenario the key fob could need to be reprogrammed or replaced completely.

Fortunately replacing a car key fob battery is a simple task. Find out the type of battery that is 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, open the key fob at the junction. You will need to use a small flathead screwdriver or your fingernail to pry the two halves apart. Take the old battery out, and replace it with a brand new one. Make sure you insert the new battery with the positive (+) side facing up toward the buttons on the fob.

Some drivers don't realize that their fob has died until they lock or unlock their car and the buttons don't work anymore. This can be corrected by reprogramming the fob. However it could be costly and time-consuming. You can also call roadside assistance to determine whether they are able to restart your car and get it back on the road.

If you have tried both of these solutions and your car still won't start, then it's time to contact an expert. A trained technician can tell if your car's computer needs changing its programming, or if the fob is only in need of a new battery. They can also recommend a reliable auto repair shop to replace your fob's key. Sometimes, however, a new fob could be the best solution.

Damaged Circuit Board

The key fob isn't indestructible, but it is able to be able to withstand a variety of physical harm. The battery, circuit board, and buttons all get their fair share of wear and tear over the course of time and it's crucial to be on guard and take care of them in order to keep your car key fob functioning well.

The easiest way to test is to make sure the battery in your key fob isn't dead. Replace the battery to determine if it resolves your issue. If repair car key doesn't work, you may need to open the fob and clean the contact surfaces. This can be a challenge since some key fobs don't have a release mechanism that is easy to open them up, and you can easily end up damaging your key fob if try to force it apart. You can purchase a specific tool to open your key fob, however you should always follow the instructions of the manufacturer to avoid damaging it.

Another problem that is frequently encountered is a damaged or corrupted circuit board inside the key fob. This can be due to various factors like dirt or moisture getting into the battery compartment software problems or even an accidental firmware update. If your key fob isn't working, you may think about having it reprogrammed. This can be done by a locksmith who specializes in this type of work.

Radio interference is another possibility. This can occur if you have other wireless devices that transmit on the same frequency, like radar detectors or home security systems. If this is the case, consult with other manufacturers of your device to ensure that your key fob's signal isn't affected by their signals.

It's also possible that your key fob may have a bad switch or other electrical component that needs to be replaced. There are online guides that will help you fix this yourself. key car repair to be careful when doing this it is important to be careful, since the circuit boards inside your key fob are small and are susceptible to breaking if they are handled roughly. If you're doing it yourself, make sure to make use of an SMT switch of good quality and then solder the switch into place correctly.

Out Buttons Out Buttons

Car key fobs can get lots of wear and tear. They are prone to getting dropped and spend a lot time being jostled in your purse or pocket. Sometimes, this jostling can cause the buttons to wear out or snagged. If this happens it's possible that a simple adjustment will be all that's needed to make it work again.

The majority of modern key fobs have sensors on them that detect when they've been used. This is due to the fact that they decrease the chances of someone stealing your vehicle. If the buttons on your key fob don't respond when pressed, they are worn out and should be replaced.

The circuit board inside the key fob also sends signals to your car. These signals include unlock and lock commands and also instructions to start your engine. If the circuit board inside your vehicle is damaged, your key fob might not allow you to unlock your car or even start the engine. Typically, this type of damage is caused by water, blunt force, or something scratching the circuit board.

If you're having to press the buttons harder than normal to make them function, then your key fob's buttons are becoming worn out. Additionally, your fob may stop sending a signal to the car or have less range than before.

If you're unable get your key fob to unlock or start your car, you need to contact an emergency locksmith in your area. They'll be able to tell whether the key fob itself is damaged or if your ignition cylinder has worn down.

Fortunately, most key fobs for cars problems aren't too difficult or serious. Keep a spare key fob in your car always in case you end up being thrown off by a malfunctioning device. You won't be left stranded because of an unresponsive or lost key. Of course, if you do lose your car key spare, 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

The case of the key fob is more than just shield the batteries and buttons. The case also houses the circuitry that does all the electrical magic when you press the key fob button. 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. Sometimes a dead key fob will just need to be reprogrammed, which is something your local auto locksmith or dealership can help you with.

Batteries could be the cause your key fob's battery not working. This is a simple solution that can be done at home by replacing the battery. The good news 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.

There are many ways to open up the key fob and go inside it, based on the type. A quick search on the internet will reveal what kind of key fob yours is and what kind of battery it requires. From there, you can purchase the replacement and simply take the old one out and put the new one in.

The most important thing to consider when fixing the 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 pull apart the key fob using an instrument like a screwdriver or any other sharp edge, it could crack the plastic or damage the case. A replacement case is inexpensive and you can purchase an entire fob, including the electronic components on eBay or Amazon for under $40.


So, if your key fob isn't working Check to see if the batteries are dead or whether the circuit board has been damaged. If that's not the situation, a professional could repair it quickly and cheaply. If not, it could be time to replace the fob. Make sure you check for a warranty on any replacement or used fobs you buy on the internet.

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