Car Key Button Repair
Car key buttons undergo many abuses particularly if they are used frequently. This could lead to them becoming damaged over time.
Fortunately, there are several quick fixes to get your keys working again. These methods do not come completely safe, however. Altering batteries or altering your key fob's security can be dangerous. If you're not comfortable doing these yourself, it's recommended that you contact a professional auto locksmith.
Change the Battery
If you're noticing that your key fob no longer working as it should, it could be time to replace the battery. You can usually buy replacement batteries at any national chain drug store or the parts department of your automobile dealership. Some manufacturers include an extra battery in your car when you buy it.
The first thing you will have to do is find out which battery your key fob uses. This information is usually available on the site of the manufacturer or by checking the key fob. Generally speaking, the most popular battery used in key fobs is a button cell type 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 for under $5 for a set of two.
If you are aware of the type of battery your key fob has, you can open it up and take out the old battery. Most key fobs are designed with a notch or seam between them and can be opened by using your fingers, or by using a flat tool like a screwdriver. Once the fob is opened, the battery will be able to pop out and you can then insert the new one with the same orientation that the old one. The majority of key fobs utilize CR2032 3V batteries, which are available at numerous stores that sell AAA and AA batteries.
You can snap the two halves back together after inserting the new battery and test the key fob to ensure that all buttons work properly. Pressing the lock and unlock buttons on the key fob while pointing it at your vehicle will help determine whether or not everything is functioning in the way it should. If your vehicle still does not respond to the key fob, you may need to reprogram the fob and establish a wireless connection. This is a simple process that only requires your phone or another device.
Reprogram your key fob
If you're having issues with your key fob and think it's time to replace it however, it may not be necessary to replace it. Instead the battery you have may need to be reprogrammed. This procedure varies for each vehicle so the best way to find out is to refer to the owner's manual (usually accessible in PDF format on the website of the automaker) or search YouTube for videos that explain how to accomplish this.
Modern automobiles require a particular procedure to put the vehicle in "programming mode," which typically involves engaging the power button on the driver's side door or ignition a few times while pressing a button on the fob within a specified time. The fob transmits its digital identification code to the vehicle, and then saves it. The fob can function as a regular key after it is programmed.

It's important to note that changing the programming of a key fob will wipe out any other key fobs which have been programmed previously. Therefore, if you wish to keep other fobs, they need to be carefully and swiftly reprogrammed after the first one.
You can sometimes find replacement batteries for your car key fob at hardware stores, big-box retailers, or even online. You must know the model and make before you purchase a fob because it isn't easy to locate the right battery.
A CR editor once found a battery that fit the key fob she used however, it was for a different car. This meant that she could start her car and unlock the door, but couldn't lower the windows.
Dealers can be a great resource in this regard, since they have the equipment to reprogram the fob on a specific vehicle. Some European cars, such as those manufactured by Audi and BMW, will usually require a dealer for this service since they utilize special security features that can only be reset by the manufacturer. Some dealers, like those at Toyota and Lexus were willing to reprogramme an alternative key fob provided you knew the exact model and year of the car you own.
Replace the Button
If you've tried changing the battery or reprogramming the key fob but cannot start your car, it could be time to replace the button on your key. The key on your car receives lots of use and jolting over time and can sometimes become stuck or broken. Each time you press the button on your key fob, the unique code is transmitted in a sequence which the vehicle's receiver is able to recognize. Trying to operate your vehicle from a distance without the correct code can cause it to not recognize you and shut the doors or shut off the engine.
You can buy replacement buttons online or at several local hardware stores. It is simple to install buttons and they are very easy to open.
Contact an Auto Locksmith
It may be time to seek out the experts when you're having issues with your car's key button. Auto locksmiths specialize in the repair of electronic car keys as well as their associated locks. They have the tools and knowledge to diagnose and fix various issues with your key fob. This includes replacing batteries and changing the programming. They are equipped with the knowledge and expertise to tackle more complex tasks, like fixing a broken key or cutting an alternative key.
One of the most frequent reasons for a car key switch to stop working is that the switch inside has worn out. The use of the switch and exposure to elements are the main causes. The switch is usually made from a hard plastic and it has several different switches on its surface. Each of these switches is responsible for activating a specific function that you use the key for. As the switch gets older over time, it becomes more difficult to activate these functions. You will have to exert more pressure on the switch in order to activate it. This can further damage the switch and reduce its lifespan.
The most straightforward solution to this problem is to replace the battery on your car's key fob. Many models of car use lithium-ion coin or button cell batteries that you can find in supermarkets, pharmacies, and home improvement stores. Your key fob should be working after replacing the battery.
If the problem persists it could be because the contacts on your key fob's device have been worn out. repair car key are made of rubber and covered with an electrical conducting film that wears out. As you use the key they are constantly exposed to moisture and dust. They'll eventually wear down to the point where they are unable to contact with the circuit board, or sensor beneath the keypad.
You can attempt to get the key fob replaced by visiting a vehicle dealership, but it can be costly and could take a long time. Another option is to call an auto locksmith in your area, who will be able to repair your key fob and help you save money.