Car Key Button Repair
The buttons on car keys are subjected to a lot and are especially vulnerable if frequently used. Over time, they can become damaged.
There are a few quick fixes that will allow your keys back in working order. However, these solutions come with risks when it comes to changing batteries or tampering with the key fob. If you're not comfortable performing these yourself, it's recommended to consult an auto locksmith professional.
Change the Battery
If you notice that your key fob no longer working as it should, it may be time to replace the battery. You can usually find replacement batteries from any chain drug store, or the parts department of your automobile dealership. Some manufacturers offer an extra battery in your vehicle when you purchase it.
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 you can look it up on the actual key fob. The most commonly used kind of battery that is found in the keyfob is the button cell, which is similar to the ones used in remotes and watches. These types of batteries are typically available at stores like Walgreens and Energizer and are available for less than $5 for a package of two.
You can take the old battery off your key fob when you know the type of battery it uses. Most key fobs are constructed with a notch or seam that connects them, which you can open by using your fingers or by using the flat side of a screwdriver. Once the fob is opened, the battery will pop right out and you can then insert the new one in the same orientation as the previous one. A lot of key fobs are powered by CR2032 batteries. These batteries are available at retailers who sell AAA or AA batteries.
Once the new battery is in place, you can snap the two pieces of the key fob back together and test it to ensure that all buttons are functioning correctly. You can verify that everything is working properly by pressing the lock and unlock button on the key fob while pointing it at your vehicle. If your vehicle doesn't respond to the keyfob, you may need to reprogram the fob and establish wireless connectivity. Luckily, this is an easy procedure and requires the use of your phone or other device to perform the procedure.
Reprogram your key fob
If you're having issues with your key fob and believe it needs a new one, it might not be required to replace it. Instead the battery you have may require reprogramming. This procedure differs for each car. To learn how to go about it, consult your owner's manual. It's usually available in PDF format on the automaker's website. You can also search YouTube for videos.
Most modern vehicles require a special procedure to put the vehicle in "programming mode," which is usually done by pressing the power button on the driver's side door or ignition a few times while pressing the fob's button within a certain time frame. The fob transmits its unique digital identification code to the vehicle, which then will save it. The fob functions as an ordinary key once it is programmed.

Reprogramming a fob will erase any previous keyfobs. Therefore, if you wish to keep other fobs, they should be carefully and swiftly reprogrammed after the first 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 prior to deciding to purchase a fob because it may be difficult to locate the right battery.
A CR editor found a battery for her key fob however, it was from a different vehicle. This meant that, while she was able to start the car and open the doors, she wasn't able to lower the windows.
Dealers can be of great assistance in this situation, since they have the equipment to reprogram the fob on the specific vehicle. Some European automobiles, like those made by Audi and BMW generally require a dealer to get this service since they utilize specialized security features that can only be reset by the manufacturer. Other dealers we spoke with, including those at Toyota and Lexus were willing to try reprogramming an original fob so long as you knew the exact model and make of your car.
Replace the Button
If you've tried changing the battery or reprogramming the key fob, but you still cannot start your car, it might be time to replace the button on your key. The button on the car key is subject to a lot of use and jostling, and it can become stuck or damaged over time. Every time you press the button on your key fob emits a different code that is recognized by the car's receiver. When you try to operate your car from a distance without using the correct code can cause it to not recognize you and then lock the doors or shut off the engine.
You can purchase replacement buttons online or in many local hardware stores. They are relatively simple to open and install and require just a bit of clear plastic tape to cover the button.
Contact an Auto Locksmith
It could be time to seek out the experts If you're experiencing issues with your car's key button. Auto locksmiths are experts in the repair of electronic keys and locks. They are equipped with the tools and expertise to diagnose and fix various issues with your key fob. This includes replacing batteries and changing their programming. They also have the skills and expertise to tackle more complex tasks such as fixing a broken button or even cutting a replacement key.
One of the main reasons for a car key button to stop working is that the switch inside has worn out. Overuse and exposure to elements are the main reasons. The switch is constructed of an extremely hard plastic with many switches on its surface. Each of these switches activates the function for which you are using the key. As the switch wears out over time, it becomes more difficult to activate these functions. You will need to apply more pressure to the switch to make it work. This could cause more damage to the switch, further reducing its lifespan.
The easiest way to solve this issue is to replace the battery inside your car key fob. You can locate lithium-ion button or coin cell batteries at pharmacies, supermarkets and home improvement stores. car key fob repair service should work once you have replaced the battery.
If the issue persists, it could be because the contacts on your key fob have worn out. The contacts are made of rubber and coated with an electricity conducting film that can wear out over time. They are exposed to the elements while you use the key and are constantly exposed to moisture and dirt. They'll eventually wear down to the point that they're unable to contact with the circuit board or sensor beneath the keypad.
You can try to get the key fob replaced by going to an auto dealer, but this could be expensive and can take a long time. You can also contact a local locksmith who will fix your key fob for less.