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How to Repair Car Key Fobs

Key fobs are susceptible to damage even if we utilize them often. In fact, they can break down in many different ways.

While the most common issue is the battery being dead, other issues can be more grave. Fortunately, many of them can be resolved with a quick DIY fix at home.

Dead Battery

A dead battery is the most common cause of the key fob not functioning. Fob batteries can deplete quickly, especially if they are exposed to extreme heat or humid temperatures, or water. Keep an extra battery in your wallet in case you need it.

You can usually tell that the battery in your car key fob is dying because the light on the LED will cease to blink. The fob may be unable to function from the same distance that it used to. In this instance, it may be necessary to reprogram the key fob or even replace it entirely.

Fortunately replacing a car key fob battery is a simple task. First, you need to determine the kind of battery is being used. The type should be engraved on the back of the fob. If you're unsure, keyless entry repairs an easy Google search will be helpful. Open the key fob across the seam after you have identified the battery type. Make use of a flathead screwdriver or even your fingernail, to break the two halves. Then, you can remove the old battery and insert an alternative one in its place. Make sure to insert the new battery with the positive (+) side facing towards the buttons on the fob.

Some drivers aren't aware that their fob is dead until they lock or unlock their vehicle and the buttons no longer work. In some cases, this can be solved by reprogramming the fob however, this can be expensive and time-consuming. Another option is to contact roadside assistance and ask them to jump your vehicle and get you back on the road.

If you've tried both of these solutions and your car is still unable to start, then it's time to call an expert. A trained technician can tell if your car's computer needs reprogramming, or if the fob simply needs a new battery. They will also suggest a reputable auto repair shop to replace your fob's keys. Sometimes, however, a new fob could be the best option.

Circuit Board Damage

Key fobs can withstand some physical abuse and is not indestructible. The battery, the circuit board buttons, and other components all suffer their fair share of wear and tear with time and it's crucial to be vigilant and take care of them in order to keep your car key fob working efficiently.

The easiest thing to check is that the battery in your key fob isn't depleted. If it is replaced, see if that fixes your problem. If this does not work, you might need to open the fob and clean the contact surfaces. This can be a challenge since some key fobs don't have easy-release mechanisms that allow you to unlock them and you could harm your device if you attempt to break it. You can buy a special tool to open your key fob, however it is recommended to follow the manufacturer's instructions to avoid damaging it.

Another problem that is frequently encountered is a damaged or damaged circuit board in the key fob. It can be caused by various factors, including dirt or moisture entering the battery compartment. Software issues or an accidental firmware update can be the cause for this. If your key fob has stopped working completely, think about having it reprogrammed with locksmiths who specialize in this type of work.

Radio interference is a different possibility. This could happen if there are other wireless devices that transmit on the same frequency your key fob, for instance radar detectors or home security systems. If this is the case, 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. This is a difficult fix, but you can find guides online that explain how to do it yourself. Be careful to be careful, however, since the circuit board inside your key fob is very small and is prone to breaking if handled roughly. If you're doing it yourself, be sure to use an SMT switch that is of high-quality and solder the switch in place in a proper manner.

Worn Out Buttons

Car key fobs are prone to a lot wear and wear and tear. They're prone to being dropped and are frequently being tossed around in your purse or pocket. This jostling can sometimes cause the buttons to wear down or become stuck. Simple adjustments can resolve the issue.

Modern key fobs come with sensors that detect when they've been hit. This is because they reduce the chances of someone stealing your vehicle. If the buttons on your key fob don't respond when you press them, they're damaged and should be replaced.

The circuit board inside the key fob also sends signals to your car key repair. These signals include commands to unlock and lock and commands to start your engine. If the circuit board within your vehicle is damaged, then your key fob might not allow you to unlock or start your engine. This type of damage is usually caused by blunt force or water.

If you have to press the buttons more than normal to activate them, then your fob's buttons are becoming worn out. In addition, your fob may cease transmitting signals to the car, or have a lower range than it did before.

Contact a locksmith immediately in the event that you are not able to use the key fob to start your vehicle. They can determine if the key fob is damaged, or if the cylinder of your ignition is worn out.

Fortunately, most car keyfob problems aren't complicated or serious. Keep a spare key fob in your vehicle at all times to avoid being shocked by a malfunctioning key. You'll never be stranded due to a malfunctioning or lost 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 on your key fob.

Broken Case

The case of a key fob does more than just shield the batteries and buttons. It also houses the circuit board that is responsible for doing all of 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 this board is damaged or dead the key fob won't be able to function. A key fob that is dead may only need to be reprogrammed by your local auto key fob repair locksmith, or dealership.

Another reason your key fob might not be working is that the batteries are dead. This is a simple fix that can be accomplished at home by replacing the battery. The good news is that you can locate an alternative battery on the internet or at a local auto parts store since the batteries aren't limited to key fobs.

Depending on the type of key fob, there is various ways to open it up and access the insides. A quick search online should reveal what kind of key fob yours is and the type of battery it uses. You can then purchase an alternative and take the old one out, and then insert the new one into.

The biggest concern when repairing the broken car key fob is that you don't want to harm the circuit board or buttons any further. If you try to pry off the key fob with an instrument like a screwdriver or any other sharp edge, it could crack the plastic or damage the case. A replacement case isn't expensive and you can purchase a complete fob assembly 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 if the circuit board has been damaged. If that's not the case, a professional will repair it quickly and inexpensively. Otherwise, it might be time to invest in an upgrade. Make sure you check the warranty on any replacement or used fobs that you purchase on the internet.