How to Repair Car Key Fobs
Although we use them a lot keys are not impervious to destruction. In fact, they could be destroyed in a variety of ways.
While the most common problem is the battery being dead however, other issues could be more serious. Many of problems can be fixed with a simple fix at home.
Dead Battery
A dead battery is likely the most common reason why a car key fob stops functioning. Fob batteries can deplete quickly, especially when they are exposed or humid temperatures or even water. It is a good idea to keep an additional fob battery in your wallet in case.
You can usually tell the moment your car key fob's battery is running low by the fact that the LED light will cease to glow. The key fob could also stop working from the same distance that it used to. In this case it might be necessary to reprogram the key fob or replace it altogether.
Fortunately the replacement of the battery in a car key fob is simple. Find out the type of battery that is used. The type should be engraved on the side of the fob. If you're unsure, doing a quick Google search will be helpful. The key fob can be opened along the seam once you've identified the battery type. Make use of a flathead screwdriver or your fingernail to separate the two halves. Take the old battery out, and replace it with a new one. Make sure to insert the new battery with the positive (+) side facing upwards towards the buttons in the fob.
Some drivers may not be aware the fob is dead until they attempt to lock or unlock their vehicle and the buttons don't respond. In some instances, this can be solved by reprogramming your fob, however, this can be expensive 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've tried both of these solutions but your car won't start and you're not sure why, it's time to contact a professional. A qualified technician will be able to determine whether your vehicle's computer system requires reprogramming or the fob simply requires a replacement battery. They will also suggest a reputable auto shop to replace your fob's key. Sometimes, however, a new fob might be the best solution.
Circuit Board Damage
Key fobs can withstand some physical abuse and isn't indestructible. The battery, circuit board and buttons are all subject to wear and tear. It is crucial to take care of these parts to ensure your key fob remains in good condition.
Verify that the battery still functioning on your key fob. If it is replaced, check if it fixes your issue. If not, you might have to remove 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 and you may damage your fob if you attempt to break it. You can purchase a special tool for opening your key fob. But, you must always follow the instructions of the manufacturer to avoid damaging it.
Another common problem is a damaged or damaged circuit board in the key fob. It can be caused by various factors, including dirt or moisture getting into the battery compartment. Issues with software or an accident firmware update could be the cause of this. If your key fob isn't functioning completely, you should think about having it reprogrammed with locksmiths who specialize in this kind of work.
Radio interference is another possible cause. This could happen if there are other wireless devices that transmit at the same frequency as your key fob, like a radar detectors and home security systems. If this is the case, you should contact the manufacturer of the other device to ensure that your key fob won't be affected by their signals.
It's also possible that your key fob is equipped with an unreliable switch or electrical component that needs to be replaced. This is a difficult fix however, there are online guides that will show you how to fix it yourself. It's important to be careful when doing this, though, as the circuit boards that are inside the key fob are tiny and are susceptible to breaking if they are handled roughly. If you decide to do this yourself, make sure to use a good quality SMT switch and then solder it in place correctly.
Worn Out Buttons
Car key fobs can suffer quite a bit of wear and tear. They are prone to getting dropped and spend a lot time being jostled in your pocket or purse. Sometimes, this jolting can cause the buttons to become worn out or become stuck. When this happens an easy adjustment could be all it takes to restore the button's functionality.
Most modern key fobs have sensors on them that can tell if they've been pressed. They're designed to do this to decrease the chance of someone stealing your car. If the buttons on your key fob don't respond when you press them, they're damaged and should be replaced.
Key fobs also have an internal circuit board that transmits signals to the car. Those signals include commands to unlock and lock and commands to start your engine. If your internal circuit board is damaged then your key fob may not unlock your vehicle or even start the engine. Most of the time, this kind of damage is caused by water, force blunt or something that scratches the circuit board.
If you're forced to press the buttons more than usual to activate them the key fob buttons are getting worn out. The fob may be unable to send a signal to your vehicle or have a shorter range.
Contact a locksmith right away when you're not able to use your key fob to start your car. They'll be able to tell whether the key fob itself is damaged or your ignition cylinder has worn down.
Fortunately, most car keyfob problems aren't too difficult or serious. Keep an extra key fob in your vehicle always in case you end up being shocked by a malfunctioning key. You won't be left stranded because of an issue with your key or a lost one. If you lose your spare key, a professional locksmith can rekey it to work with your car's engine. They can also repair any internal damage to the key fob.
Broken Case
The case of your key fob is more than just a place to store the battery and buttons. The case also houses the circuitry that does all the electrical magic whenever you press the key fob button. The circuit board relays the signal from your key fob to your car.
The key fob won't work if the board is damaged. A dead key fob might only need to be reprogrammed by a local auto locksmith, or dealership.
key car repair might not be working is because the batteries are dying. The battery can be replaced at home. You can purchase an alternative battery at your local auto parts shop or online. These batteries are not just for key fobs.
Depending on the kind of key fob you have, there are various ways to open it and gain access to the inside. You can determine what kind of battery your key fob uses by conducting a quick internet search. You can then purchase a new one, 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 cause damage to the circuit board or buttons further. If you attempt to pry away the key fob with the screwdriver or another sharp edge, it can crack the plastic or break the case. A replacement case isn't much and you can buy the entire fob including the electronics on eBay or Amazon for under $40.
So, if your key fob isn't functioning look into whether the batteries are dead or if the circuit board is damaged. If this is not the situation, you can get it repaired quickly and inexpensively by a professional. In the event that it isn't, it's the time to purchase a replacement. Be sure to look for a warranty on any used or replacement fobs you purchase online.