How to Repair Car Key Fobs
Even though we test them numerous times, key fobs are not indestructible. They can actually break down in a variety of ways.
While the most common issue is a dead battery however, other issues could be more grave. Many of problems can be fixed by a quick fix at home.
Dead Battery
A dead battery is probably the most frequent reason the car key fob stop working. Fob batteries can be drained quickly, especially when they're exposed to extreme temperatures, humidity, or water. Keep an extra battery in your wallet in case you require it.
The LED light will usually stop blinking when the battery in the car key fob is low. It's also possible that the fob won't work from the same distance as it used to. In this scenario the key fob might require reprogramming or replaced entirely.
It is easy to replace the car keyfob battery. Find out the kind of battery used. The type should be engraved on the back of the fob. Google can assist you in case you're unsure. The key fob can be opened along the seam once you've identified the battery type. Use a flathead screwdriver, or even your fingernail, to break the two halves. Then, remove the old battery and insert an alternative one in its place. Make sure you insert the new battery with the positive (+) side facing upwards towards the buttons in the fob.
Some drivers aren't aware that their fob has gone out of service until they lock or unlock their car, and the buttons don't work anymore. This can be fixed by reprogramming your fob. However it can be time-consuming and expensive. You can also call roadside assistance to see whether they can jumpstart your vehicle and get it back on the road.
If you have tried all three of these methods but your car won't start and you're not sure why, it's time to contact an expert. A trained technician can tell 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 repair shop to replace your fob's key. Sometimes an entirely new fob could be the best option.
Damaged Circuit Board
A key fob is able to withstand many physical abuses and is not indestructible. The battery, circuit board and buttons are all susceptible to wear and tear. It is important to take care of these parts to keep your key fob in good condition.
The most straightforward thing to do is that the battery in your key fob isn't dead. If it is replaced, determine if this fixes the issue. If not, you may require opening the key fob and clean the contact surfaces. It can be difficult to open certain key fobs since they don't have an easy release mechanism. You may damage the fob by trying to break it. You can purchase a special tool to open your key fob, however you should always follow the instructions of the manufacturer to avoid damaging it.
Another problem that is frequently encountered is a damaged or corrupted circuit board inside the key fob. This can be due to a number of things like moisture or dirt that gets into the battery compartment, software issues or even an unintentional firmware update. If key repair has stopped functioning, you might be interested in having it reprogrammed. This can be done by a locksmith who is skilled in this type of work.
Radio interference is another possible cause. This can happen if there are other wireless devices operating on the same frequency as your key fob, such radar detectors or home security systems. If this is the case, inquire with the other manufacturers of the device to ensure that your key fob isn't being affected by their signals.
It's also possible that your key fob has a bad switch or other electrical component that should be replaced. There are online guides that help you fix this yourself. Be careful, however, as the circuit board that is inside your key fob is very small and could easily break if handled with care. If you're doing this yourself, be sure to make use of an SMT switch that is of high-quality and then solder the switch into the correct position.
Buttons that are worn out
Car key fobs are subject to a lot wear and tear. They are prone to getting lost and spend a significant amount of time in your pocket or purse. This jostling can sometimes cause buttons to wear out or get stuck. When this happens it's possible that a simple adjustment will be all it takes to restore the button's functionality.
Most modern key fobs have sensors on them that can detect when they've been used. They're designed to do this to reduce the likelihood of someone stealing your car. If the buttons on your key fob don't respond when pressed, they are worn out and should be replaced.
Key fobs also contain an internal circuit board which transmits signals to your car. These signals include commands to unlock and lock your car, and commands to start the engine. If your internal circuit board is damaged then the key fob you have may not be able to unlock your vehicle or start the engine. This kind of damage is usually caused by water or blunt force.
If you're having to press the buttons harder than normal to get them to function the key fob buttons are wearing out. In addition your fob could stop transmitting a signal to the car or it'll have less range than it did prior to.
Contact a locksmith right away in the event that you are not able to use the key fob for your car. They'll be able to tell whether the key fob itself is damaged or the ignition cylinder has worn out.
Fortunately, the majority of car key fob problems aren't too serious or complex. The best way to avoid getting taken by surprise by an unresponsive key fob is to keep an extra key in your possession at all times. You'll never be stranded due to a malfunctioning or lost key. If you do happen to lose your car key spare A locksmith can change the key to ensure it is compatible with the ignition of your car. They'll also be able to fix any internal damage that has occurred on the key fob.
Broken Case
The case of the key fob is more than just protect the buttons and batteries. It also houses the circuit board responsible for all 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 the board is damaged or dead, your key fob won't be able to function. A dead key fob might require reprogramming by your local auto locksmith or dealership.
Another reason your key fob may not be working is because the batteries are dead. The battery can be replaced at home. The good thing is that you can find the replacement battery online or at your local auto parts store, since the batteries aren't limited to key fobs.
There are a variety of ways to open up the key fob and go inside it, based on the type. A quick internet search should identify the type of key fob yours is and what kind of battery it takes. You can then buy a new replacement and pop the old one out, and put the new one into.
The most important thing to consider when fixing the broken car key fob is that you don't want to damage the circuit board or buttons further. When you try to break the key fob using a sharp edge, such as screwdrivers can break the case or damage the plastic. A replacement case isn't expensive and you can find the entire fob including the electronic components on eBay or Amazon for less than $40.
If your key fob doesn't function, make sure you have damaged the circuit board or the batteries. If this isn't the situation, a professional could repair it quickly and cheaply. In the event that it isn't, it's time to invest in a replacement. Be sure to look for a warranty on any used or replacement fobs you purchase on the internet.