Car Key Button Repair
Car key buttons undergo a lot of abuse, especially if used frequently. As time passes, they may be damaged.
There are a few simple solutions that will get your keys back in working order. These solutions are not completely safe however. Changing batteries or tampering your key fob can be risky. If you are not comfortable with these methods, it is best to consult a professional auto-locksmith.
Change the Battery

It may be time to replace the battery in your key fob if it isn't working as it should. You can find replacement batteries in any chain drugstore nationwide or in the parts department at your local dealership for cars. Some manufacturers offer an extra battery with your car when you buy it.
The first thing you will need to find out what kind of battery your key fob uses. This information is typically available on the website of the manufacturer or by examining the key fob. The most commonly used kind of battery that is found in a keyfob is the button cell, which is like the ones found in watches and remotes. These kinds of batteries are available at stores like Walgreens and Energizer and can be bought at less than $5 for a pack of two.
You can take the old battery off your key fob after you know the type of battery it is using. Most key fobs are constructed with a seam or notch between them which you can either open by using your fingers, or using the flat side of a screwdriver. After the fob has been opened, the battery will be able to pop out and you can insert the new one with the same orientation as the previous one. A lot of key fobs are powered by CR2032 batteries. These batteries are sold at retailers that sell AAA or AA batteries.
After the new battery has been installed 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 correctly. You can determine if all functions are working correctly by pressing the lock and unlock buttons on the key fob, while pointing it toward your vehicle. If your vehicle is not responding to the key fob, it might be necessary to reprogram your key fob and establish an electronic connection between the two. This is a fairly straightforward process that requires your phone or a different device.
Reprogram the Key Fob
If your key fob doesn't work and you believe it's time to replace it the fact is that it might not require an entirely new battery, but rather the original one must be reset. This process varies by car and the best option is to read the owner's manual (usually available in PDF form on the website of the automaker) or look on YouTube for videos explaining how to accomplish this.
The majority of modern vehicles require a special procedure to put the vehicle in "programming mode," which typically involves engaging the power button on the driver's side door or ignition several times while pressing the fob's button within a certain time frame. The fob transmits its unique digital identification code to the vehicle, and then saves it. Once the fob is programmed, it can perform the same way as a normal key.
Reprogramming a fob will erase any previous keyfobs. If you wish to keep the other fobs following the first, then they should be programmed quickly and carefully.
There are a few replacement batteries for your key fob for your car at hardware stores, big-box retailers or online. However, you need to be aware of the make and model of your car prior to purchasing a battery for your fob because the right kind can be tricky to find.
A CR editor stumbled across a battery for her key fob however, it was from another vehicle. This meant that although she was able to start the car and unlock the doors, she was not capable of lowering the windows.
Dealers can be of great assistance in this regard, since they have the equipment necessary to reprogram the fob for the specific vehicle. Certain European automobiles, like the ones manufactured by Audi and BMW typically 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 like those at Toyota and Lexus, were willing to reprogramme an original fob so long as you knew the exact model and make of the vehicle you are driving.
Replace the Button
If you've tried changing the battery, reprogramming your key fob and still can't start your car it might be time to replace that button on the key. The key on your car receives lots of use and jostling over the years and may get stuck or even broken. Every time you press the button on your key fob a unique code is transmitted in a pattern that the receiver in the vehicle is able to recognize. If you attempt to operate your vehicle from far away, it may not recognise you. It may lock the doors or shut off the engine.
You can purchase replacement buttons online or in many local hardware stores. It is easy to install them and they are also very easy to open.
Contact an Auto Locksmith
If you're experiencing a problem with your car key button it could be time to call in the experts. Auto locksmiths specialize in the repair of electronic car keys as well as their associated locks. They have the expertise and tools needed to identify and repair a variety of issues that may arise with your key fob including replacing batteries and changing their programming. They also have the skills and experience to handle more complicated tasks, such as repairing a broken button or even cutting a replacement key.
The switch in the car key button is typically worn out. This is due to excessive use and exposure to the elements. The switch is made from an extremely hard plastic with many switches on its surface. Each switch is able to activate the function that you select with the key. As the switch age, it becomes more difficult to activate these functions. You will need to apply more pressure to the switch to make it work. This can further damage the switch and reduce its lifespan.
The most straightforward solution to this issue is to replace the battery in your car key fob. g28carkeys.co.uk can easily locate lithium-ion button or coin cell batteries in supermarkets, pharmacies and home improvement stores. Once you've replaced the battery, your key fob should work once more.
If the issue persists it could be that the contacts in your key fob have become worn out. The contacts are made of rubber and coated with an electrically conducting film, which can wear down over time. They are exposed to elements when you use the keypad, so they're constantly being exposed to moisture and dirt. Over time, they get worn down to the point that they're no longer in contact with the circuit board or sensor underneath the keypad.
The dealership can replace the key fob, but it could be costly and take a lot of time. The other option is to call a local locksmith for your car, who will be able to fix your key fob and help you save money.