car keys repair can be subjected to lots of abuse. Buttons can become stuck or break depending on the way they are stored and how they are thrown around.
Most key fob issues are fixable. Certain issues with key fobs are more severe and require expert assistance. This is when locksmiths can come in handy.
Dead Fob Battery
The car key fobs are pretty intelligent, but that does not mean they won't sometimes get stuck in the "not responding zone". When this happens, it's usually time to replace the battery. This doesn't solve the problem because it could be due to a bad connection at one of the terminals on the battery connector.
Automobile manufacturers are aware of this issue, so they often put a spare mechanical key inside the fob to be used in the case of an emergency. To access this, you can locate the small release switch or latch located behind the fob (check the user's manual for specifics). Pressing this will allow you to unlock the fob and gain access to an actual key that you can use to unlock your car.
Another sign that your fob's batteries are dying is the fact that you have to be much closer to your car in order to unlock and open it than before. This is because the transmitter of your fob loses its strength when its battery dies, limiting its range of operation.
Replacing the battery is easy and fairly inexpensive. You'll need to purchase a button-cell battery (which is similar to a small silver coin) and then follow the steps in the user manual to take out the old battery. Replace the battery in the exact direction that the previous one (the positive side facing upwards toward the buttons). After reassembling your fob, test its start, lock and unlock functions to ensure that the new battery was installed correctly.
Certain key fobs may be a little tricky to open but you should be able to do it by placing the latch, switch, or screw on the back of the fob and then prying it open. You'll need the fob to work with your vehicle, so take care not to cause damage! If you're not confident doing this on your own then you can bring your fob to a professional. Since it's a common service the majority of auto shops will replace the battery in a fob for a nominal charge. Some dealers might even offer it for free dependent on the make and model of your vehicle.
Fob not working
The first thing you need to do when your key fob isn't working is replace the batteries. This is the fastest fix and will likely resolve the problem. If your device isn't working after changing the battery, it could be due to damage.
The key fob in your car can be damaged due to various reasons, including physical trauma, exposure to water, or a damaged or corroded board. These issues can stop your key from transmitting the signal to the receiver in your vehicle, which will then prevent your car's ignition or doors from opening. You may need to have a professional replace your fob if it is damaged.
Similarly, the buttons on your fob may have become worn out over time with repeated use. The rubber can wear away making the buttons less 'clicky' or springy. They can also cease to register your presses. Try wiping the buttons and adjusting them to see if this resolves the issue however, it's recommended to send the fob to be professionally examined for more comprehensive repairs.
Double check that the battery you're using is exactly right for your fob. You can find a list of compatible batteries online or at many hardware stores. You should always consult your owner's manual or engraving on the inside of the fob to determine the kind of battery it requires. A battery that isn't a perfect match can have issues transmitting powerful signals or providing sufficient power to the internal components of the fob.
In rare instances, the problem could be with the vehicle's electronic components or receiver. You can test this by using a physical key to open the door, and then trying to start your car with the inductive backup system (if available). If your key's physical counterpart does not open or start your car, make sure an expert check the receiver and electronic components to ensure that they're working correctly.
Fob that is damaged
A key fob is made up of many components and one issue can cause other components to fail. If a key fob stops functioning, it is important to determine whether there's a clear cause such as a damaged case or a damaged internal component. Check the horn, lights and other parts of the car to ensure they're functioning properly.
If the key fob is damaged, it's recommended to get a replacement from your dealership or an auto locksmith instead of trying to fix it. The fob may need to be reprogrammed to the car, which is something that can't usually be done at home, and it requires special equipment to do so.
The buttons on a key fob use contacts to transmit signals to the circuit board on the key fob however, they can wear down over time. This is more common when you drop the device or leave it in a hot climate.
As time passes the internal wiring inside the key fob could become worn down. This could lead to a button not working when it's pressed or only working when pressed extremely hard. It could also result in the car not opening or locking when the fob is used.
Most key fobs have an outer cover made of plastic that can be removed and cleaned by using soap and warm water. This can restore a keyfob to its original purpose. It's also a good idea to clean it frequently to avoid dirt damaging the inside.
A bad battery is the main reason why the key fob will not turn on or work. Most car dealers and mechanics are able to replace the batteries in a short time however, if you're at ease doing it yourself, you can buy a battery from an hardware store or big-box retailer, and follow the instructions in your owner's manual or on YouTube to install it.
The worst-case scenario is that the key fob has internal damage, like cracks in the case, tiny electronic components that aren't fully attached to the circuit board or bent or corroded contact points for batteries. If you find any of these problems it is recommended to consult an auto locksmith or a dealer to get a replacement key fob as well as assistance in programming it to your vehicle.
Fob Isn't Programming
Car key fobs are a convenient feature that lets you unlock your car doors and then start the engine. They can also cause frustration when they stop working or appear to be working intermittently. In some cases, the problem may be as simple as replacing the battery however, in other instances, it could involve an even more complex repair. The first step is to figure out why the fob isn't functioning correctly.
One of the most common reasons for a malfunctioning fob is that it is no longer able to recognize your vehicle. This could happen if the connection between your remote and car is broken. You can sometimes reset this connection without the need for a key fob repair service.
Other issues could arise when the key fob no more sends an energizing signal. This could happen if the key is damaged or the battery is dead. In either case, you should try to reconnect your key with your vehicle. This can be accomplished by following the instructions that came by the key fob. It's also recommended to carry a spare key with you to make use of it in the event that the primary key isn't working.
The fob might not receive an adequate signal from the vehicle. This can be caused by an insufficient car battery or interference from wireless devices, or an antenna issue. By using a remote tester you can test the fob and determine if it's the cause of the issue. If the tester does not light up when you press any of the buttons, it may be that the battery needs to be replaced or that the fob is been damaged.
Another possible reason for the fob not sending a strong enough signal is that the car's immobilizer system is hindering it. This can occur in the event that your key fob isn't been programmed correctly or if you have a software issue.
If you're unable to repair the fob or it's not worth the effort to repair it, you should buy a new one. There are low-cost options from many online retailers, and some of these can even be delivered to your doorstep.