Car Key Button Repair
Car key buttons endure many abuses, especially if used frequently. This can result in them becoming faulty over time.
Fortunately, there are several quick fixes to get your keys working again. These methods are not completely safe however. Altering batteries or altering your key fob's security can be dangerous. If you're not comfortable performing these yourself, it is recommended that you contact an auto locksmith professional.
Change the Battery
If you're noticing that your key fob is no longer working as it should, it could be time to replace the battery. You can buy replacement batteries at any chain drugstore nationwide or in the parts department of your local dealership for cars. Some manufacturers include a spare battery with the car when you purchase it.
First, you'll need to find out the kind of battery is being used in your key fob. This information is usually available on the manufacturer's website or by examining the key fob. g28carkeys used battery that is used in key fobs is a button cell type that is similar to the ones used in watches and remote controls. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two.
Once you know what kind of battery your key fob is using then you can open it and take out the old battery. Most key fobs are designed with a notch or seam where they join together and can be opened with your fingers, or by using a flat tool like a screwdriver. After the key fob has been opened, the battery will come out. It is then possible to replace it with the same design. Many key fobs are powered by CR2032 batteries. These batteries can be found at retailers who sell AAA or AA batteries.
Once the new battery is installed after which you can connect the two parts of the key fob back together and test it to make sure that all buttons work properly. Pressing the locks and unlock buttons on the key fob while it is pointed at your vehicle will allow you to determine whether or not everything is functioning in the way it should. If your vehicle is not responding to the key fob, it may be necessary to reprogram the key fob and establish an electronic connection between the two. This is a relatively easy process that requires your phone or another device.
Reprogram your key fob
If your key fob doesn't work and you believe it needs to be replaced, it may not need a new battery, but instead the old one needs to be reprogrammed. This procedure is different for every car so the best way to find out is to read the owner's manual (usually accessible in PDF format on the site of the automaker) or search YouTube for videos that explain how to accomplish this.
Modern automobiles require a particular procedure to put the vehicle into 'programming mode,' which typically involves engaging the power button on the driver's side door or ignition a few times while pressing the fob's button within a specific time period. The fob sends its digital identification code to the vehicle, and then will save it. Once the fob has been programmed, it can perform the same way as normal keys.
Reprogramming a keyfob erases any previous keyfobs. Therefore, if you'd like to keep other fobs, they must be carefully and quickly reprogrammed following the initial one.
Sometimes you can find replacement batteries for car key fobs in hardware stores, big retailers, or even online. You must know your car's model and make before you purchase a fob as it can be difficult to locate the right battery.
A CR editor discovered an battery for her key fob, however, it was from another vehicle. This meant that although she was able to start the car and open the doors, she wasn't able to lower the windows.
Luckily, dealers can assist in this case in this case, since they have the necessary equipment to reprogram a fob to specific cars. Some European vehicles, such as the ones manufactured by Audi and BMW generally require you to go to an authorized dealer for this service due to the fact that they have special security features that can only be reset by the manufacturer. Other dealers we spoke to, including those from Toyota and Lexus, were willing to attempt reprogramming the fob in a replacement as long as you knew the exact model and make of the car you own.
Replace the Button
If you've tried changing the battery, or reprogramming your key fob, but still can't start your car it could be time to replace the button on your key. The button on your car key is subjected to a lot of pressure and jostling and can get damaged or stuck over time. Each time you press the button on your key fob the unique code is transmitted in a pattern that the receiver inside the vehicle can recognize. Trying to operate your vehicle from a distance without the proper code could cause it to not recognize you and lock the doors or shut off the engine.
You can purchase replacement buttons online or in many local hardware stores. They are easy to open up and install and require only a small amount of clear plastic tape to cover the old button.
Contact an Auto Locksmith
It could be time to speak with a professional if you are experiencing problems with your car's key switch. Auto locksmiths are experts in the repair of electronic keys and locks. These experts have the tools and know-how to identify and fix issues with your key fob. This includes replacing batteries and changing their programming. They also have the expertise and experience to handle more complicated jobs such as fixing damaged buttons or cutting a replacement key.

The switch on the car key button is often worn out. The use of the switch and exposure to elements are the primary reasons. The switch is made from a hard plastic and has many switches on its surface. Each of these switches is responsible for activating the specific function you are using the key for. As the switch ages over time, it becomes more difficult to activate these functions. You will have to exert more pressure on the switch to make it work. This can cause further damage to the switch, thereby reducing its longevity.
Replace the battery in your key fob. The majority of cars have lithium-ion button or coin batteries that you can find at pharmacies, supermarkets and home improvement stores. Your key fob should function after you have replaced the battery.
If the issue persists, it could be that the contacts inside your key fob are worn out. The contacts are rubbery and are covered with an electrically conducting film that wears out. When you use the keypad, they are constantly exposed to moisture and dust. Over time, they get worn down to the point where they are no longer in contact with the circuit board or the sensor beneath the keypad.
The dealership can replace your key fob, but it's costly and take a lot of time. You can also contact a local locksmith who can repair your key fob for an affordable price.