Everything You Need To Know About Car Key Button Repair car keys repair on car keys are subjected to a lot and are especially vulnerable if used frequently. As time passes, they may become faulty.


There are a few simple solutions that will get your keys working again. However, these solutions come with risks when it comes to changing batteries or tampering with the key fob. If you're not confident doing these yourself, it's recommended to consult an auto locksmith professional.

Change the Battery

It may be time to replace the battery if your key fob isn't working as it should. You can typically purchase replacement batteries from any chain drug store, or the parts department at your car dealership. Some manufacturers offer an extra battery in your car when you buy it.

You will first need to find out the kind of battery is used in your key fob. This information is usually available on the website of the manufacturer or by checking the key fob. The most commonly used type of battery found in keyfobs is the button cell, which is similar to the ones used in remotes and watches. 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 once you know what kind of battery it uses. You can open most key fobs using your fingers or a flat tool, such as a screwdriver, at the seam or notch at which they connect. Once the fob is opened, the battery should be able to pop out and you can then insert the new one in the same direction that the old one. The majority of key fobs utilize CR2032 3V batteries, which are easily available at numerous retailers that sell AAA and AA batteries.

Once the new battery is installed, you can snap the two halves of the key fob back together and test it to ensure that all buttons function correctly. Pressing the lock and unlock buttons on the key fob while pointing it at your vehicle will help you determine whether or not everything is working as it should be. If your vehicle does not respond to the keyfob, you may have to reset the fob to establish a wireless connection. It's a relatively easy process and only requires the use of a phone or other device to accomplish this.

Reprogram your key fob

If your key fob won't work and you believe it's time to replace it the fact is that it might not require the replacement of a battery, but rather the original one must be reset. This process is different for each vehicle. To find out how to go about it go through the owner's manual. It's usually available in PDF format on the website of the automaker. You can also search YouTube for videos.

The majority of modern automobiles require a particular procedure to put the vehicle into 'programming mode,' which usually involves pressing the power button on the driver's side door or ignition multiple times while pressing the fob's button within a specific time period. The fob transmits its unique digital identification code to the vehicle, which then saves it. Once the fob is programmed, it will behave as a normal key.

It is important to remember that the process of reprogramming a key fob can wipe out any other key fobs that have been previously programmed. Therefore, if you wish to keep other fobs, they must be carefully and quickly reprogrammed after the first one.

You can often find replacement batteries for your car key fob at 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 because it isn't easy to find the right battery.

A CR editor discovered an battery for her key fob, but it was from a different vehicle. This meant that, while she was able to start the car and unlock the doors, she was not in a position to lower the windows.

Dealers can be a great resource in this regard, since they have the equipment to reprogram the fob for a specific vehicle. Dealers are required to perform this procedure on certain European vehicles like Audi and BMW due to their unique security features which can only be reset in the factory. Other dealers we spoke with like those at Toyota and Lexus, were willing to attempt reprogramming a replacement fob as provided you know the exact model and make of the vehicle you are driving.

Replace the Button

If you've tried changing the battery or reprogramming the key fob, but you still cannot start your car, it could be time to replace the button on your key. The button on the key of your car is subject to a lot of use and jostling, and it can be damaged or stuck over time. Each time you press the button on your car key fob releases a distinct code that is recognized by the receiver inside the vehicle. If you try to operate your vehicle from a distance, it may not recognize you. It could shut the doors or turn off the engine.

You can purchase replacement buttons online or in numerous local hardware stores. They are fairly easy to open and install and only require a little clear plastic tape to cover the old button.

Contact an Auto Locksmith

If you're experiencing a problem 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. They have the expertise and tools needed to identify and fix a range of issues with your key fob, including replacing batteries and changing the programming. They have the knowledge and expertise to tackle more complicated tasks, such as fixing a broken key or cutting a replacement key.

One of the most frequent reasons for a car's key button to stop working is because the switch inside has worn out. This is caused by overuse and exposure to elements. The switch is made of a hard plastic and has several switches on its surface. Each of these switches activates the function for which you are using the key. As the switch ages over time, it becomes harder to turn on each of these functions. In the end, you'll need to push harder on the switch to get it to work. This could cause more damage to the switch, thereby decreasing its lifespan.

Replace the battery in your key fob. A lot of models of cars use lithium-ion coin or button batteries which you can buy at supermarkets, pharmacies, and home improvement stores. Your key fob should work once you have replaced the battery.

If the issue persists, it could be that the contacts on 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. As you use the key they are exposed to dust and moisture. Over time, they become worn until they're no longer in contact with the circuit board or the sensor beneath the keypad.

You can attempt to get the key fob replaced at a vehicle dealership, but this can be expensive and can take quite a while. Another alternative is to contact an auto locksmith in your area who can fix your key fob and save you money.