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15 Unexpected Facts About Repair Car Key That You'd Never Been Educated About
How to Repair Car Key Fobs

Even though we use them numerous times keys are not impervious to destruction. They can actually be destroyed in different ways.

While the most common issue is an unresponsive battery but other issues can be more serious. Luckily, most of these issues can be solved by making a quick DIY fix at home.

Dead Battery

A dead battery is the most frequent reason for a key fob that is not working. Fob batteries are known to drain quickly, particularly if they are exposed or cold temperatures, humidity, or water. Keep an extra battery in your wallet in case you require it.

You will usually know the moment the battery in your car key fob is dying because the LED light will stop glowing. The fob may be unable to function from the same distance that it used to. In this instance, it may be necessary to re-program the key fob or even replace it entirely.

It is simple to replace the battery in a car keyfob. Find out the kind of battery used. The type of battery you are using should be embossed in the back of your key fob. If you are not sure then a quick Google search will help. Once you've found the kind of battery you want, open the key fob at the junction. You will need to use an small screwdriver with a flat head or even your fingernail to split the two halves. Take the old battery out, and replace it with a new one. Make sure you insert the new battery with the positive (+) side facing upwards towards the buttons in the fob.

Some drivers may not realize their fob is dead until they attempt to lock or unlock their vehicle and the buttons don't respond. In some cases, this can be solved by reprogramming the fob however, it can be costly 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 have tried all of these options and your car still won't start, then it's time to contact an expert. A trained technician can determine if your vehicle's computer system requires reprogramming or if the fob requires a new battery. They can also suggest an auto shop that will replace your key fob. Sometimes it is possible that a new fob may be the best solution.

Damaged Circuit Board

A key fob can take many physical abuses and isn't indestructible. The battery, the circuit board and buttons will all experience their fair share of wear and tear over the course of time, so it's important to be on guard and take care of them to ensure that your car key fob operating efficiently.

Make sure that the battery still functioning in your key fob. If it is, replace the battery and see if that fixes your problem. If this does not work, you may have to open the fob and clean the contact surfaces. It is sometimes difficult to open some key fobs because they don't have an easy release mechanism. You can cause damage to your fob by trying break it. You can purchase a specific tool to open your key fob, however you should always follow the manufacturer's instructions to avoid damaging it.

Another common problem is a damaged or corrupted circuit board in the key fob. This can be caused by many things like 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 type of work.

Radio interference is another possibility. This can happen if there are other wireless devices transmitting on the same frequency as your key fob, for instance radar detectors, home security systems. If this is the case, you should inquire with the other manufacturers of your device to make sure that your key fob's signal isn't affected by their signals.

You may also need to replace a switch or other electrical component in your key fob. This is a difficult fix however, there are online guides that will show you how to fix it yourself. Be cautious, however, as the circuit board that is inside the key fob is tiny and can easily break if handled with care. If you decide to do this yourself, be sure to use a high quality SMT switch and solder it in place correctly.

Out Buttons Out Buttons

Car key fobs can suffer quite a bit of wear and wear and tear. They're prone to being dropped and are frequently moving around in your pocket or purse. Sometimes, this can cause the buttons to wear out or snagged. Simple adjustments can resolve the issue.

Modern key fobs come with sensors that are able to detect when they have been pressed. This is because they lower 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.

Key fobs also have an electronic circuit inside that transmits signals to the car. Those signals include unlock and lock commands, as well as instructions to start your engine. If your internal circuit board is damaged, then your key fob might not allow you to unlock your car or even start the engine. Most of the time, this kind of damage is caused by water, force blunt or a scratch on the circuit board.

You'll be able to tell that the buttons on your key fob are deteriorating If you're finding yourself pressing the buttons more than normal to get them to work. Your fob might not be sending signals to your car or have a smaller range.

If you're not able to get your key fob to unlock or start your car, you need to find an emergency locksmith in your area. They'll be able to tell whether the key fob itself is damaged or the ignition cylinder is worn out.

Fortunately, most key fobs for cars problems aren't too difficult or serious. Keep an extra key fob in your vehicle at all times to avoid being surprised by a malfunctioning one. This will ensure that you're never trapped in a place due to a lost or malfunctioning key. If you lose your spare key, an expert locksmith can rekey it to work with your vehicle's engine. They can also repair any internal damage to the key fob.

Broken Case

A key fob's case is more than just a place to store the buttons and battery. It also houses the circuit board responsible for doing all of the electrical magic when you press a button on your key fob. The board transmits the signal from your key fob to your car.

The key fob won't work if the board is damaged. A key fob that is dead may only need to be reprogrammed by a local auto locksmith, or dealer.

Batteries could be the cause of your key fob not working. This is a simple solution that can be done at home by replacing the battery. The positive side is that you can find a replacement battery online or at your local auto parts store, since the batteries aren't limited to key fobs.

There are car key repair near me to open up the key fob and go inside, based on the type. A quick internet search should reveal what kind of key fob yours is and the type of battery it requires. You can then purchase a new replacement and 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 damage the circuit or buttons more. If you attempt to pull away the key fob with the screwdriver or another sharp edge, it could break the plastic or break the case. A replacement case isn't much and you can find a complete fob assembly including the electronics on eBay or Amazon for under $40.

If your key fob doesn't function, make sure you have damaged the circuit board or the batteries. If this isn't the case, a professional can repair it quickly and inexpensively. If not, it might be time to replace the fob. Be sure to look for a warranty on any used or replacement fobs you purchase online.

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