How to Repair Car Key Fobs
Key fobs can be damaged even if we utilize them frequently. They can actually break down in a variety of ways.
While the most common problem is an unresponsive battery but other issues can be more serious. Luckily, most of them can be resolved with a quick DIY fix at home.
Dead Battery
A dead battery is the most common reason for a key fob that is not working. Fob batteries can deplete quickly, especially if they are exposed to extreme heat or cold temperatures, humidity or water. It's a good idea keep an extra battery in your wallet just in case.
The LED light will usually cease to blink when the battery in your car key fob is running low. It is also possible that the fob won't function from the same distance it used to. In this instance the key fob might need to be programmed again or replaced entirely.
Fortunately the replacement of a car key fob battery is simple. First, determine what type of battery is used. The type of battery you are using should be stamped on the side of your key fob. If you are not sure it is, doing a quick Google search will help. Unlock the key fob along the seam once you have identified the battery type. You'll need an small screwdriver with a flat head or even your fingernail to pry the two halves apart. Then, take out the old battery and insert a new one in its place. Make sure you insert the new battery with the positive (+) side facing upwards towards the buttons on the fob.
Some drivers may not realize the fob is dead until they try to lock or unlock their vehicle and the buttons do not respond. In some instances this issue can be resolved by reprogramming the fob however, this can be expensive and time-consuming. Another option is to call roadside assistance and ask them to jump your vehicle and get you back on the road.
If you've tried all the options and your vehicle still won't turn on, it's time to contact a professional. 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 an entirely new fob might be the best option.
Circuit Board Damage
A key fob is able to withstand some physical abuse and is not impervious to destruction. The circuit board, battery and buttons are all susceptible to wear and tear. It is essential to take care of these parts to keep your key fob in good condition.
Make sure that the battery still functioning on your key fob. If it is, replace the battery and check if it fixes your issue. If not, you might need to open the key fob and clean the contact surfaces. This can be difficult because some key fobs don't have a release mechanism that is easy to unlock them, and you can easily damage your fob if you attempt to break it. You can buy a tool for opening your key fob. However, you should follow the directions of the manufacturer to avoid damaging the.
how to repair car key lock that is frequently encountered is a damaged or corrupted circuit board on the key fob. It can be caused by a number of things, such as dirt or moisture getting into the battery compartment, software issues or even an accidental firmware update. If your key fob has stopped working completely, think about having it reprogrammed by a locksmith that specializes in this kind of work.
Radio interference is another possibility. This could happen in the event that you have other wireless devices that transmit at 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 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. You can find online guides that will show you how to fix this yourself. Be cautious to be careful, however, since the circuit board that is inside your key fob is very small and could easily break if handled roughly. If you're doing it yourself, make sure to use an SMT switch of good quality and solder the switch in place correctly.
Buttons that are worn out
Car key fobs can suffer a lot of wear and tear. They are prone to being dropped and are frequently moving around in your pocket or purse. The constant jostling can cause the buttons to wear out or get stuck. A simple adjustment can fix the issue.
Modern key fobs are equipped with sensors that are able to detect when they have been press. They're designed to do this so that they can lower the risk of someone stealing your car. If the buttons on your key fob aren't responding when pressed, they are worn out and need to be replaced.
The circuit board in the key fob transmits signals to your car. Those signals include commands to unlock and lock and commands to start your engine. If the circuit board inside your vehicle is damaged, then your key fob might not be able to unlock your vehicle or even start the engine. Generally, this kind of damage is caused by water, blunt force, 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 more than usual in order to get them working. In addition your fob could stop sending a signal to the car or it'll have a lower range than it did before.
If you're unable unlock your key fob, unlock or start your car, it's important to find a locksmith near you immediately. They can tell if the key fob is damaged or the cylinder of your ignition is worn out.
Fortunately, most car key fob problems aren't too serious or complex. The best way to avoid getting caught off guard by an issue with your key fob is to keep a spare in your possession at all times. This will ensure that you're not trapped in a place due to the loss or malfunction of your key. If you have lost your spare key, a professional locksmith can rekey it to work with your car's engine. They'll also be able fix any internal damage that has occurred to the key fob.
Broken Case
A key fob's case does more than just protect the buttons and battery. The case also houses the circuitry that performs all the electrical magic whenever you press the button on your key fob. The circuit board receives the signal from your key fob and transmits it to your car.
If this board is damaged or dead your key fob will not be able to function. A dead key fob may require reprogramming by your local auto locksmith or dealer.
Another reason your key fob might not be working is because the batteries are dead. The battery can be replaced at home. You can get an alternative battery at the local auto parts store or on the internet. These batteries aren't just for key fobs.

There are several ways to open a key fob and get inside it, depending on the type. You can determine the type of battery your key fob has by doing a quick online search. You can then purchase a new replacement and pop the old one out, and put 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. Trying to pry apart the key fob using a hard edge like a screwdriver can cause damage to the case or damage the plastic. Fortunately, a replacement for the case is cheap and you can get an entire fob with the electronic components from eBay or Amazon for less than $40.
So, if your key fob isn't working, check to see if the batteries are dead or if the circuit board is damaged. If this isn't the situation, a professional could repair it for you quickly and cheaply. If not, it might be time to replace the fob. Just be sure to check for a warranty on any used or replacement fobs you purchase on the internet.