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How to Repair Car Key Fobs

Even though we use them many a times keys aren't impervious to destruction. In fact, they can break down in many different ways.

Other issues could be more important than a dead battery. Luckily, key fob repairs of them can be resolved with a quick DIY fix at home.

Dead Battery


A dead battery is the most common reason for the key fob not functioning. 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.

The LED light will typically cease to blink when the battery in your car key fob is running low. The key fob could also stop working at the same distance it used to. In this scenario, the key fob may need to be programmed again or replaced entirely.

Fortunately, replacing a car key fob battery is a simple task. First, find out what kind of battery is used. The type of battery should be engraved on the side of your key fob. If you are not sure, doing a quick Google search will help. Once you've identified the battery type and the key fob, you can open it at the seam. Utilize a flathead screwdriver or even your fingernail to break the two halves. Remove the old battery, and replace it with a new one. Then, insert the new battery so that the positive (+) face is facing the buttons on the fob.

Some drivers might not be aware that the fob is dead until they try to lock or unlock their car and the buttons aren't responding. This can be corrected by reprogramming the fob. However, it can be time-consuming and expensive. Another option is to contact roadside assistance and see if they are able to jump your car and get you back on the road.

If you have tried both of these solutions and your car is still unable to start, then it's time to contact a professional. A qualified technician will be able to determine if your car's computer system needs to be reprogrammed or the fob simply requires a new battery. They can also recommend a reputable auto repair shop to replace your fob's key. In the end, sometimes a brand new fob is the best solution.

Damaged Circuit Board

Key fobs aren't indestructible, but it is able to be able to withstand a variety of physical damage. The battery, circuit board and buttons will all experience their fair amount of wear and tear over the course of time, so it's important to be on guard and take care of them to keep your car key fob working efficiently.

The easiest thing to check is to ensure that the battery inside the key fob isn't dying. Replace the battery to see if it fixes your issue. If not, you'll need to open 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 cause damage to your fob by trying force it apart. You can purchase a special tool for opening your key fob. However, you should adhere to the guidelines of the manufacturer to avoid damaging the.

A damaged or damaged key fob circuit board is a common problem. This could be due to many things, including moisture or dirt getting into the battery compartment. Issues with software or an accidental firmware update can be the cause of this. If your key fob isn't working completely, think about having it reprogrammed by a locksmith that specializes in this kind of work.

Radio interference is another possible cause. It could happen when you have other wireless devices that transmit at the same frequency, such as radar detectors or home security systems. If this is the situation, you should contact the manufacturer of the other device to make sure that your key fob won't be affected by their signals.

It's also possible that your key fob is equipped with an issue with the switch or another electrical component that needs to be replaced. This is a more difficult fix, but you can find online guides that will show you how to do it yourself. It is important to be cautious when doing this, though it is important to be careful, since the circuit boards that are inside your key fob are tiny and easily break in the event of rough handling. If you're doing this yourself, ensure you make use of an SMT switch that is of high-quality and solder the switch in place correctly.

Buttons that are worn out

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

Modern key fobs are fitted with sensors that are able to detect when they have been pressed. This is due to the fact that they decrease the chance of someone else stealing your vehicle. If your key fob's buttons don't respond when pushed this is a sign that they're worn-out and need to be replaced.

The circuit board inside the key fob also transmits signals to your car. These signals include commands to unlock and lock your car, and instructions to start the engine. If the circuit board inside your vehicle is damaged, your key fob might not unlock your vehicle or even start the engine. Generally, this kind of damage is caused by water, blunt force or something that scratches the circuit board.

You'll notice that the buttons on your key fob are wearing out when you press more than normal to get them to work. 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 vehicle, it's crucial to call a locksmith in your area immediately. They'll be able determine whether the key fob is damaged or your ignition cylinder is worn out.

Fortunately, the majority of car keyfob problems aren't complicated or serious. The best way to avoid getting 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 because of the loss or malfunction of your key. If you lose your spare key a professional locksmith can rekey it to work with your vehicle's engine. They'll also be able fix any internal damage that's occurred to your key fob.

Broken Case

The case of your key fob is more than just a place to store the buttons and battery. The case also houses the circuitry that executes all the electrical magic whenever you press the button on your key fob. The circuit board relays the signal from your key fob to your car.

Your key fob will not work if this board is damaged. A dead key fob may only need to be reprogrammed by a local auto locksmith or dealer.

Another reason your key fob might not be working is that the batteries are dying. The battery can be replaced at home. You can get an alternative battery at your local auto parts shop or online. These batteries aren't only intended for key fobs.

Depending on the kind of key fob, there are various ways to open it up and gain access to the inside. A quick search on the internet will reveal what kind of key fob you have 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.

When fixing a damaged key fob, the most important concern is not to destroy the circuit or buttons in any way. Trying to pry apart the fob using a sharp edge, such as screwdrivers can break the case or damage the plastic. Luckily, a replacement case is cheap and you can get a whole fob assembly with the electronics on eBay or Amazon for less than $40.

So, if your key fob isn't functioning look into whether the batteries are dead or whether the circuit board is damaged. If this is not the case, you can have it repaired quickly and inexpensively by a professional. In the event that it isn't, it's time to invest in a replacement. Be sure to check the warranty on any replacement or used fobs that you purchase on the internet.

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