Car Key Button Repair

The buttons on car keys are exposed to a lot, especially if they are used frequently. This can lead to them becoming damaged over time.

Fortunately, there are several quick fixes to get your keys working again. However, these solutions come with the potential for dangers when changing batteries or altering the key fob. If you're not confident with these methods, it's recommended to seek advice from a professional auto-locksmith.

Change the Battery

It could be time to replace the battery in your key fob if it no longer works as it should. You can usually find replacement batteries at any national chain drug store, or the parts department at your car dealership. Some manufacturers will even include an extra key fob battery inside the packaging when you purchase your vehicle from them.

The first thing you will need to do is find out which battery is used in your key fob. This information is usually available on the website of the manufacturer or by checking the key fob. Generally, the most common battery used in a key fob is a button cell type that is similar to the ones used in watches and remote controls. These batteries are available at Walgreens, Energizer and other stores for less than $5 per pack of two.

Once you are aware of the type of battery your key fob is using you can open it up and keys remove the old battery. Most key fobs are constructed with a notch or seam that connects them which you can either open by using your fingers, or with the flat side of a screwdriver. When the fob is opened, the battery will be able to pop out and you can then put in the new one with the same orientation that the old one. Many key fobs are powered by CR2032 batteries. These batteries are sold at retailers who sell AAA or AA batteries.

You can put the two halves back together after inserting the new battery and test the key fob to ensure that all buttons function correctly. You can verify that all functions are working correctly by pressing the lock and unlock buttons on the key fob, while pointing it towards your vehicle. If your vehicle isn't responding to the key fob, you may require reprogramming the fob to establish wireless connectivity. Fortunately, this is an easy procedure and only requires the use of your smartphone or another device to accomplish this.

Reprogram your key fob

If you're having issues with your key fob and think it needs a new one It may not be required to replace it. Instead the old battery might require reprogramming. This procedure varies for each vehicle and the best option is to consult the owner's manual (usually accessible in PDF format on the website of the automaker) or look on YouTube for videos that explain how to go about this.

In most modern vehicles, a specific procedure is required to put the vehicle in "programming mode". This usually involves pressing the power button a few times on the door of the driver or ignition, while simultaneously pressing a button on a fob within the time frame specified. This is how the fob sends its digital identity code to the vehicle, which stores it in memory. Once the fob is programmed, it can function like normal keys.

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. If you want to keep the other fobs after the first, then they should be programmed quickly and with care.

Sometimes you can find replacement batteries for car key fobs at hardware stores, large retailers, or even online. It is important to know the model and make before you purchase a fob as it may be difficult to locate the correct battery.

A CR editor discovered the battery for her key fob, however, it was from another vehicle. This meant she was able to start her car and unlock the door, but she couldn't lower the windows.

Luckily, dealers can help in this situation, as most of them have the necessary equipment to reprogram a fob to a specific car. Dealers are required to perform this procedure on some European vehicles like Audi and BMW due to their unique security features that can only be reset by the manufacturer. Other dealers we spoke to, including those from Toyota and Lexus, were willing to attempt reprogramming a replacement fob as 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 and programming the key fob, but you still can't start your car it could be time to replace the button on the key. The button on the car key is subject to a lot of use and jostling and can be damaged or stuck over time. Each press of the button on your car key fob generates a unique code in a sequence that is recognized by the car's receiver. When you try to operate your car from a distance without the proper code could cause it to not be able to recognize you and shut the doors or turn off the engine.

You can buy replacement buttons online or at many local hardware stores. It is simple to install buttons and they are very easy to open.

Contact an Auto Locksmith

If you're experiencing issues with the car key button, it may be time to contact the experts. Auto locksmiths specialise in the repair key of electronic car keys as well as their associated locks. These specialists have the tools and expertise to identify and fix issues with your key fob. This includes replacing batteries and reprogramming them. They have the expertise and skills to handle more complex tasks, like repairing a broken key or cutting the replacement key.

The switch in the button for the car key is typically worn out. This is due to overuse and exposure to the elements. The switch is typically constructed from a hard plastic and it has several different switches on its surface. Each of these switches is responsible for activating the particular function you are using the key to activate. As the switch age it becomes more difficult to activate these functions. You will need to apply more pressure to the switch to get it to work. This can further damage the switch and decrease its lifespan.

Replace the battery in your key fob. A lot of models of cars use lithium-ion button or coin batteries which you can find in supermarkets, pharmacies, and home improvement stores. Once you've replaced the battery your key fob should work once more.

If the problem persists it could be that the contacts in your key fob are worn out. The contacts are made of rubber, and covered with an electrically conducting film that wears out. As you use the key they are continuously exposed to moisture and dust. They'll eventually wear out to the point where they are unable to contact with the circuit board or sensor beneath the keypad.

You can try to get the key fob replaced at a vehicle dealership, but it can be costly and can take an extended time. You can also call an expert locksmith in your area who will fix your key fob for an affordable price.