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5 Repair Car Key Projects For Every Budget
How to Repair Car Key Fobs

Although we use them many a times, key fobs are not indestructible. In fact, they can break down in many different ways.

Other issues can be more serious than a dead battery. Fortunately, the majority of these can be fixed by a simple DIY fix at home.

Dead Battery

A dead battery is the most frequent cause of a key fob that is not working. Fob batteries tend to drain quickly, especially when they are exposed or humid temperatures or even water. Keep car remote key repair in your wallet in case you need it.

It is easy to tell that the battery of your car key fob is dying because the LED light will stop glowing. It's also possible that your key fob won't function at the same distance it did in the past. In this case the key fob might need to be programmed again or replaced altogether.

Fortunately the replacement of a car key fob battery is easy. Find out the type of battery that is used. The type should be engraved on the back of the fob. Google can help when you're not sure. Open the key fob along the seam after you have identified the type of battery. Make use of a flathead screwdriver or even your fingernail, to break the two halves. Remove the old battery and replace it with a brand new one. Be sure to insert the new battery with the positive (+) side facing upwards towards the buttons on the fob.

Some drivers may not realize their fob is dead until they attempt to lock or unlock their car and the buttons do not respond. In some instances, this can be solved by reprogramming the fob but that can be costly and time-consuming. Another option is to call roadside assistance and ask them to jump your car 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 a professional. A certified technician can determine the computer in your car needs reprogramming, or if the fob is only in need of a new battery. They will also suggest a reputable auto shop to replace your key fob. Sometimes, however, a new fob might be the best option.

Circuit Board Damage

The key fob isn't impervious to destruction, but it can withstand a lot of physical harm. The battery, circuit board and buttons are all susceptible to wear and wear and tear. It is important to take care of these components to ensure your key fob remains in good condition.

Check that the battery is still working on your key fob. Replace the battery to see if it solves your problem. If not, you might need to open the key fob and clean the contact surfaces. This can be difficult since some key fobs don't have easy-release mechanisms that allow you to open them up, and you can easily end up damaging your key fob if attempt to break it. You can purchase a special tool to open your key fob, but it is recommended to follow the instructions of the manufacturer to avoid damaging it.

A damaged or corrupted key fob circuit board is a frequent issue. It can be caused by many things like moisture or dirt that gets into the battery compartment, software issues or even an unintentional firmware update. If your key fob isn't working completely, you should consider having it reprogrammed by locksmiths who specialize in this type of work.

Radio interference is another possibility. This could happen if you have other wireless devices around that transmit at the same frequency, for example, radar detectors or home security systems. If this is the case, inquire with the other manufacturers of your device to ensure that your key fob isn't being affected by their signals.

It's also possible that your key fob is equipped with an unreliable switch or electrical component that should be replaced. This is a harder fix however, there are online guides that will show you how to fix it yourself. You should be careful to be careful, however, since the circuit board in your key fob is small and could easily break when handled rough. If you do this yourself, make sure to use a good quality SMT switch and then solder it to the correct place.

Buttons that are worn out

Car key fobs can get a lot of wear and wear and tear. They're susceptible to being dropped and spend a lot of time moving around in your purse or pocket. The jolting can cause the buttons to wear down or become stuck. A simple adjustment can fix the issue.

Modern key fobs are equipped with sensors that can detect when they have been pressed. This is due to the fact that they decrease the possibility of someone taking your vehicle. If the buttons on your key fob don't respond when pushed it's a sign that they're worn out and need to be replaced.

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

You'll be able to tell that the buttons on your key fob are wearing out If you're finding yourself pressing the buttons more than usual to get them to function. Additionally your fob could stop transmitting a signal to the car or it'll have a lower range than it did before.

Contact a locksmith immediately in the event that you are unable to use your key fob to access your car. They'll be able determine whether the key fob itself is damaged or if your ignition cylinder is worn out.

Fortunately, most key fobs for cars problems aren't too difficult or serious. The best way to avoid getting caught off guard by an unresponsive key fob is to keep an extra in your pocket at all times. You'll never be stranded due to a malfunctioning or lost key. If you have lost your spare key, an expert locksmith can rekey it to work with your vehicle's engine. They can also repair any internal damage to your key fob.

Broken Case

The case of the key fob is more than just protect the batteries and buttons. It also houses the circuit board responsible for doing all of the electrical magic when you press a button on your key fob. The circuit board relays the signal from your keyfob to your car.

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

Batteries could be the cause the key fob's not working. The battery can be replaced at home. The positive side is that you can get a replacement battery on the internet or at your local auto parts store, since the batteries aren't limited to key fobs.

There are several ways to open up a key fob to get inside it, based on the type. You can determine the type of battery your key fob has by doing a quick online search. You can then buy an alternative and take the old one out and then insert the new one in.


When fixing a damaged key fob, the main goal is not to harm the circuit or buttons more. If you attempt to pull off the key fob with the screwdriver or another sharp edge, it could break the plastic or damage the case. Fortunately, a replacement case is inexpensive and you can get the entire fob and the electronics on eBay or Amazon for less than $40.

If your key fob won't function, make sure you've damaged the circuit board or batteries. 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 the warranty of any replacement or used fobs that you purchase on the internet.

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