Car Key Button Repair
Car key buttons endure lots of abuse, especially if used frequently. In time, they could become faulty.

There are a few easy fixes that will allow your keys working again. However, these methods have risks when it comes to changing batteries or tampering with the key fob. If you're not confident doing these things yourself, it's recommended to consult a professional 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 usually buy replacement batteries from any chain drug store or the parts department at your car dealership. Some manufacturers will even include a spare key fob battery in the packaging when you purchase a car from them.
The first thing you will have to do is find out which battery your key fob uses. The manufacturer may have this information on their website or you can look it up on the key fob's specifications. Generally speaking, the most popular battery used in a key fob is a button cell that is similar to the ones used in remote controls and watches. These kinds of batteries are typically available at stores like Walgreens and Energizer, and are available at less than $5 for a pack of two.
If you are aware of the type of battery your key fob is using then you can open it up and remove the old battery. The majority of key fobs are made with a notch or a seam that connects them which you can either open with your fingers, or by using an instrument that is flat, such as a screwdriver. Once the key fob has been opened, the battery will be released. It is then possible to replace it with the same design. The majority of key fobs are powered by CR2032 3V batteries, which are readily accessible at a variety of retailers that sell AAA and AA batteries.
Once key fob repair is inserted, you can snap the two halves of the key fob back together and check that all buttons work correctly. You can test if all functions are working correctly by pressing the lock and unlock button on the key fob, while pointing it at your vehicle. If your car doesn't respond to the keyfob, you may require reprogramming the fob to establish a wireless connection. Fortunately, this is quite simple and only requires the use of a smartphone or another device to accomplish this.
Reprogram the Key Fob
If your key fob does not work and you think it needs to be replaced, it may not need the replacement of a battery, but instead the original one must be reprogrammed. This process is different for each vehicle. To find out how to go about it go through the owner's manual. It's typically available in PDF format on the automaker website. link web site can also search YouTube for videos.
In modern vehicles, a special procedure is required to put the vehicle in 'programming mode'. This typically involves pressing the power button a few times on the driver's door or ignition while simultaneously pressing the button on a fob in a time-specific period. This is how the fob sends its digital identity code to the vehicle, which stores it in the memory. The fob will work like normal keys once it has been programmed.
Reprogramming a keyfob erases any previous keyfobs. Therefore, if you wish to keep other fobs, they must be carefully and swiftly reprogrammed following the initial one.
There are a few replacement batteries for a car key fob in hardware stores, big-box retailers or even online. You must be aware of your car's model and make prior to deciding to purchase a fob because it may be difficult to locate the right battery.
A CR editor stumbled across an battery for her key fob, however, it came from another vehicle. This meant that although she was able to start the car and unlock the doors, she was not able to lower the windows.
Luckily, dealers can assist in this case in this case, since they have the equipment needed to reprogram a fob for a specific car. Dealers are required to perform this service on certain European automobiles like Audi and BMW because they come with specialized security features that can only be reset by the manufacturer. Other dealers we spoke to like those from Toyota and Lexus were willing to reprogramme the fob in a replacement as they knew the exact model and make of the car you own.
Replace the Button
If you've tried changing the battery or reprogramming the key fob, but you still can't 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. Each time you press the button on your key fob, a unique code is sent out in a pattern that the vehicle's receiver is able to recognize. If you attempt to operate your vehicle from some distance, it might not recognize you. It might shut the doors or turn off the engine.
You can purchase replacement buttons online or at many local hardware stores. It is easy to install them and they are very simple to open.
Contact an Auto Locksmith
If you're experiencing a problem with your car key it could be time to consult the experts. Auto locksmiths specialise in the repair of electronic car keys and their associated locks. They have the tools and know-how to determine and fix issues with your key fob. This includes replacing batteries and reprogramming them. They also have the knowledge and experience to handle more complicated tasks, such as repairing a broken button or even cutting a new replacement key.
The switch on the car key button is usually worn out. This is due to overuse and exposure to the elements. The switch is usually made from a hard plastic and it has several different switches on its surface. Each switch is able to activate the function for which you use the key. As the switch gets older it becomes more difficult to activate these functions. This means that you'll have to press down more force on the switch to make it work. This could cause more damage to the switch, further diminishing its life span.
The most straightforward solution to this issue is to replace the battery inside your car key fob. You can locate lithium-ion button or coin cell batteries in supermarkets, pharmacies and home improvement stores. Your key fob should now work once you have replaced the battery.
If the problem persists it could be because the contacts inside your key fob are worn out. The contacts are made of rubber and coated with an electricity conducting film, which can wear away over time. When you use the key, they are continuously exposed to dust and moisture. In time, they'll get worn down until they're no longer in contact with the circuit board or sensor underneath the keypad.
The dealer can replace the key fob, but it's costly and takes a lot of time. You can also call a local locksmith who will fix your key fob at an affordable price.