Car key buttons endure a lot of abuse particularly when they are used regularly. This could lead to them becoming damaged over time.
Fortunately, there are several quick solutions to make your keys work again. These methods do not come completely safe however. Making changes to batteries or tampering with the key fob could be risky. If you're not confident doing these things yourself, it's recommended to contact an expert auto locksmith.
Change the Battery
If you are noticing that your key fob no longer working as it should, it might be time to replace the battery. You can find replacement batteries in any chain drugstore nationwide or in the parts department at your local dealership for cars. Some manufacturers will even include an extra key fob battery in the packaging when you purchase your vehicle from them.
The first thing you will have to do is find out which battery is used in your key fob. This information is typically available on the manufacturer's website or by checking the key fob. The most popular type of battery found in the keyfob is the button cell similar to those found in watches and remotes. These types of batteries are typically found at stores such as Walgreens and Energizer and can be bought for less than $5 for a set of two.
You can remove the old battery from your key fob when you know which type of battery it has. It is possible to open most key fobs using your fingers or a flat tool like a screwdriver at the notch or seam where they connect. After the fob has been opened, the battery will come out, and you can then put in the new one in the same orientation as the previous one. Most key fobs use CR2032 3V batteries, which are readily available at numerous retailers that sell AAA and AA batteries.
Once the new battery is in place After that, you can take the two pieces of the key fob back together and test it to ensure that all buttons work correctly. Pressing the lock and unlock buttons on the key fob while pointing it at your vehicle will help you determine if everything is working as it should be. If your car doesn't respond to the keyfob, you may need to reprogram the fob and establish wireless connectivity. It's an easy procedure and only requires the use of a smartphone or another device to perform the procedure.
Reprogram the Key Fob
If you're having trouble with your key fob and believe it needs a new one however, it may not be required to replace it. Instead, the old battery may require reprogramming. This procedure varies for each vehicle so the best way to find out is to consult the owner's manual (usually available in PDF format on the website of the automaker) or look on YouTube for videos explaining how to accomplish this.
Modern vehicles require a specific procedure to put the vehicle into 'programming mode,' which usually involves pressing the power button on the driver's side door or ignition a few times while pressing a button on the fob within a certain time frame. The fob transmits its unique digital identification code to the vehicle, which saves it. Once the fob is programmed, it can behave as normal keys.

Reprogramming a fob will erase any previous keyfobs. Therefore, if you wish to keep other fobs, they must be reprogrammed with care and speed after the first one.
There are a few replacement batteries for a car key fob in hardware stores, big-box retailers, or online. But, it is important to be aware of the model and make of your car prior to buying a fob battery as the right kind can be tricky to find.
A CR editor discovered an battery for her key fob however, it came from an entirely different vehicle. This meant that, while she could start the car and unlock the doors, she wasn't able to lower the windows.
Dealers can be a great resource in this regard, since they have the tools to reprogram the fob for specific vehicles. Dealers are required to perform this procedure on certain European cars such as Audi and BMW because they come with specialized security features that can only be reset by the manufacturer. Some dealers, such as those at Toyota and Lexus were willing to reprogramme an alternative key fob in the event that you could identify the exact model and brand of your vehicle.
Replace the Button
If you've tried changing the battery, or reprogramming your key fob, but you're still unable to start your car, it might be time to replace the button on your key. The key on your car receives a lot of use and jostling over the years and can become stuck or broken. Each press of the button on your car key fob releases a distinct code in a sequence that is recognized by the receiver inside the vehicle. If you attempt to operate your vehicle from a distance without using the correct code can cause it not to recognise you and shut the doors or turn off the engine.
You can purchase replacement buttons online or at several local hardware stores. They are relatively simple to open and install and require only a small amount of clear plastic tape to cover the old button.
Contact an Auto Locksmith
It's time to seek out the experts If you're experiencing issues with your car's key switch. Auto locksmiths are experts in the repair of electronic keys and locks. They have the expertise and tools necessary to diagnose and fix a range of issues with your key fob, including replacing batteries and reprogramming them. They also have the expertise and experience to handle more complicated jobs, such as repairing broken buttons or cutting a new replacement key.
car key repair near me of the most frequent reasons for a car key switch to stop working is that the switch inside has worn out. Overuse and exposure to elements are the primary reasons. The switch is constructed of hard plastic and has several switches on its surface. Each switch activates the function for which you use the key. As the switch ages over time, it becomes more difficult to activate these functions. This means that you'll need to push down more force on the switch in order to enable it to function. This could further damage the switch and shorten its lifespan.
The most straightforward solution to this issue is to replace the battery inside your car key fob. Many models of car use lithium-ion coin or button cell batteries which you can find in supermarkets, pharmacies, and home improvement stores. After replacing the battery your key fob should be working again.
If the problem persists, it could be that the contacts inside the key fob have worn out. The contacts are rubbery and are covered with an electrically conducting film that can wear out. As you use the key they are exposed to moisture and dust. They'll eventually wear out to the point that they're unable to contact with the circuit board or the sensor underneath the keypad.
The dealership can replace the key fob, however it could be costly and take a long time. You can also contact a local locksmith who will fix your key fob for an affordable price.