https//k12instructurecom/eportfolios/710448/Home/A_Peek_At_Car_Key_Button_Repairs_Secrets_Of_Car_Key_Button_Repair endure lots of abuse, especially if used frequently Over time, they can become faulty There are a few simple fixes that will allow your keys working again These methods are not without risk however Altering batteries or altering your key fob can be dangerous If you're not confident with these methods, it is best to consult a professional auto-locksmith Change the Battery It's possible to replace the battery if your key fob no longer works as it should You can typically purchase replacement batteries at any national chain drug store, or the parts department of your automobile dealership Some manufacturers offer an extra battery in your car when you buy it It is first necessary to find out what kind of battery is being used in your key fob The manufacturer will likely have this information on their website or on the key fob itself The most popular kind of battery that is found in the keyfob is the button cell that is similar to the ones used in watches and remotes These kinds of batteries are commonly sold at places like Walgreens and Energizer and can be bought at less than 5 for a pack of two Once you know what kind of battery your key fob is using you can open it up and remove the old battery It is possible to open most key fobs using your fingers or a flat tool, such as a screwdriver, at the seam or notch where they connect After the key fob has been opened, the battery will come out It is then possible to replace it with the same orientation Many key fobs are powered by CR2032 batteries These batteries can be found at retailers that sell AAA or AA batteries Once the new battery is inserted after which you can connect the two halves of the key fob back together and test it to make sure that all buttons are functioning properly Pressing the lock and unlock buttons on the key fob while it is pointed at your vehicle will allow you to determine if everything is functioning as it should be If your car does not respond to the keyfob, you may require reprogramming the fob and establish wireless connectivity Fortunately, this is a relatively easy process and requires the use of a phone or other device to accomplish this Reprogram the Key Fob If you're having issues with your key fob and think that it's time to get a new one, it might not be necessary to replace it Instead, the old battery may require reprogramming This process is different for every car To learn how to go about it, consult your owner's manual It's typically available in PDF format on the automaker website You can also search YouTube for videos In most modern vehicles, a specific procedure is required to put the vehicle into 'programming mode' This typically involves pressing the power button multiple times on the driver's door or ignition, while simultaneously pressing a button on a fob within a time-specific period The fob transmits its unique digital identification code to the vehicle, and then stores it Once the fob is programmed, it will function like a normal key Reprogramming a keyfob will erase any previous keyfobs Therefore, if you'd like to keep other fobs, they need to be reprogrammed with care and speed after the first one You can often find replacement batteries for a car key fob in hardware stores, big-box retailers or on the internet You will need to know the model and make prior to deciding to purchase a fob as it may be difficult to locate the right battery A CR editor once came across a battery that was compatible with the key fob she owned however it was for a different vehicle This meant that she could start her car and unlock the door, but she was unable to lower the windows Dealers can be a great resource in this regard, since they have the tools to reprogram the fob on the specific vehicle Certain European vehicles, such as those made by Audi and BMW generally require you to go to a dealer to get this service due to the fact that they have specialized security features that can only be reset by the manufacturer Other dealers we spoke with, including those from Toyota and Lexus were willing to reprogramme a replacement fob as provided you know the exact model and make of your car Replace the Button If you've tried changing the battery and programming the key fob but can't start your car it could be time to replace the button on the key The key on your car receives many uses and jolting over time and can get stuck or even broken Each time you press the button on your key fob emits a different code that is recognized by the car's receiver If you attempt to operate your car from a distance and not using the proper code could cause it to not recognize you and shut the doors or shut off the engine You can purchase replacement buttons online or at many local hardware stores They are easy to install and open and only require a little clear plastic tape to cover the button Contact an Auto Locksmith It may be time to speak with a professional when you're having issues with your car's key switch https//rentryco/8v7ows4x are experts in the repair of electronic keys and locks These specialists have the tools and knowledge to identify and fix issues with your key fob This includes replacing batteries and changing the programming They also have the knowledge and expertise to tackle more complex tasks like fixing damaged buttons or cutting a replacement key The switch on the car key button is often worn out Excessive use and exposure to elements are the main causes The switch is made from hard plastic and has multiple switches on its surface Each of these switches activates the function that you select with the key As the switch ages over time, it becomes more difficult to activate each of these functions As a result, you will need to press down more force on the switch to enable it to function This could cause further damage to the switch and decrease its lifespan Replace the battery in your key fob You can find lithium-ion button or coin cell batteries at supermarkets, pharmacies and home improvement stores Your key fob will work once you have replaced the battery If the problem persists it could be because the contacts on your key fob are worn out The contacts are rubber-like and coated with an electrically conducting film that can wear out over time They are exposed to the elements when you use the key, so they're constantly being exposed to moisture and dirt Over time, they become worn to the point that they are no longer in contact with the circuit board or sensor underneath the keypad The dealership can replace the key fob, however it can be expensive and take a lot of time You can also contact an emergency locksmith who will repair your key fob at an affordable price