Car Key Button Repair
The buttons on car keys are subjected to a lot, especially if they are often used. This can lead to them becoming damaged over time.
There are a few simple solutions that will get your keys working again. These methods do not come completely safe, however. Making changes to batteries or tampering with your key fob can be risky. If you're not comfortable with these methods, it is recommended to seek advice from an expert auto-locksmith.
Change the Battery
It may be time to replace the battery if your key fob no longer works as it should. You can purchase replacement batteries at any drugstore chain nationwide or in the parts department at your local dealership for cars. Some manufacturers will even include a spare key fob battery in their packaging when you purchase a car from them.
First, you'll need to find out what type of battery is used in your key fob. The manufacturer will likely have this information on their website or on the key fob's specifications. auto key repair of battery found in a keyfob is the button cell that is like the ones found in watches and remotes. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two.
You can take the old battery off your key fob after you know the type of battery it is using. Most key fobs are designed with a seam or notch that connects them, which you can open with your fingers, or with a flat tool like a screwdriver. When the fob is opened, the battery should be able to pop out and you can then put in the new one in the same orientation as the old one. Most key fobs use CR2032 3V batteries, which are accessible at a variety of retailers that sell AAA and AA batteries.
After the new battery has been installed, you can snap the two pieces of the key fob together and check that all buttons are functioning correctly. You can determine if everything is working properly by pressing the lock and unlock button on the key fob, while pointing it toward your vehicle. If your vehicle still doesn't respond to the fob, you might require reprogramming the fob to establish an internet connection. This is a fairly simple process that only requires your phone or another device.
Reprogram the Key Fob
If you're having trouble with your key fob and think it needs a new one however, it may not be necessary to replace it. Instead, the old battery may require reprogramming. This procedure varies for each vehicle, so your best bet is to consult the owner's manual (usually available in PDF form on the website of the automaker) or look on YouTube for videos on how to do this.
In the majority of modern vehicles, a particular procedure is required to put the vehicle into 'programming mode'. This usually involves pressing the power button several times on the driver's door or ignition, while simultaneously pressing the button on a fob in the time frame specified. The fob transmits its digital identification code to the vehicle, which saves it. After the fob is programmed, it will function like a normal key.
Reprogramming a keyfob will erase any previous keyfobs. Therefore, if you wish to keep other fobs, they should be carefully and quickly reprogrammed after the first one.
There are a few replacement batteries for your car key fob at hardware stores, big-box retailers or on the internet. However, you need to know the make and model of your car prior to purchasing a battery for your fob because the right type isn't always easy to locate.
A CR editor once found a battery that fit the key fob she used however, it was for a different car. This meant she could start her car and open the door, but couldn't lower the windows.
Fortunately, the dealer can help in this situation and most dealers have the equipment needed to reprogram a fob to a specific car. Dealers are required to perform this service on some European cars such as Audi and BMW because they have specialized security features that can only be reset by the manufacturer. Certain dealers, like those at Toyota and Lexus were willing to reprogram the key fob in a replacement provided you knew the exact model and year of your car.
Replace the Button

If you have tried changing the battery or reprogramming the key fob but not being able to start your car, it may be time to replace the button on your key. The car key button gets a lot of use and jerking over time and may become stuck or broken. When you press the button on your key fob the unique code is sent in a sequence which the receiver in the vehicle is able to recognize. If you attempt to operate your vehicle from a distance, it may not recognise you. It might close the doors or turn off the engine.
You can buy replacement buttons online or at numerous local hardware stores. They are fairly easy to open up and install and require just a bit of clear plastic tape to cover the old button.
Contact an Auto Locksmith
If you're having trouble with the car key button It could be time to consult the experts. Auto locksmiths are experts in the repair of electronic keys and locks. These experts have the tools and know-how to determine and fix issues with your key fob. This includes replacing batteries and changing the programming. They also have the expertise and experience to handle more complicated jobs such as fixing damaged buttons or cutting a new replacement key.
The switch inside the button for the car key is typically worn out. This is caused by overuse and exposure to the elements. The switch is usually made from a hard plastic and it has several different switches that are located on the surface. Each of these switches activates the function for which you are using the key. As the switch ages it becomes more difficult to activate these functions. You will have to apply more pressure to the switch to make it work. This could further damage the switch and decrease its lifespan.
The most effective solution to this issue is to replace the battery inside the key fob of your car. You can easily find lithium-ion button or coin cell batteries in supermarkets, pharmacies and home improvement stores. Your key fob should be working after replacing the battery.
If the problem persists it could be because the contacts inside the key fob have worn out. The contacts are rubber-like and coated with an electric conducting film, which could wear out over time. They are exposed to the elements as you use the key, so they're constantly being exposed to moisture and dirt. They'll eventually wear down to the point where they can no longer make contact with the circuit board, or the sensor underneath the keypad.
You can try to get the key fob replaced at a car dealership, however it can be costly and can take an extended time. The other option is to call a local locksmith for your car, who will be able to fix your key fob and help you save money.