Car Key Button Repair

Car key buttons endure a lot of abuse particularly if they are used frequently. This could lead to them becoming faulty over time.

There are a few simple fixes that will allow your keys back in working order. However, these methods have risks associated with changing batteries or altering your key fob. If you're not confident with these methods, it's best to consult a professional auto-locksmith.

Change the Battery

If you are 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 from any chain drug store or in the parts department at your car dealership. Some manufacturers even include an extra key fob battery in their packaging when you purchase your car from them.

The first thing you'll need to do is find out what kind of battery your key fob uses. This information is typically found on the site of the manufacturer or by checking the key fob. The most popular type of battery in the keyfob is the button cell similar to the ones used in watches and remotes. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two.

If you are aware of the type of battery your key fob is using you can open it up and remove the old battery. Most key fobs are constructed with a seam or notch between them and can be opened by using your fingers, or by using the flat side of a screwdriver. After the fob has been opened, the battery will pop right out and you can then put in the new one in the same orientation as the previous one. A lot of 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 you have inserted the new battery and test the key fob to make sure that all buttons work correctly. Pressing the locks and unlock buttons on the key fob while pointing it at your vehicle will help you determine if everything is functioning in the way it should. If your car isn't responding to the fob, you might require reprogramming the fob and establish a wireless connection. Luckily, this is a relatively easy process and only requires the use of a phone or other device to accomplish this.

Reprogram the Key Fob

If you're having issues with your key fob, and you think it needs a new one, it might not be required to replace it. Instead the battery you have may need to be reprogrammed. This procedure is different for every car and the best option is to refer to the owner's manual (usually available in PDF format on the website of the automaker) or search YouTube for videos explaining how to accomplish this.

In the majority of modern vehicles, a specific procedure is required to put the vehicle in 'programming mode'. This typically involves pressing the power button several times on the driver's door or ignition while simultaneously pressing the button on a fob in the time frame specified. The fob transmits its unique digital identification code to the vehicle, and 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'd like to keep other fobs, they must be carefully and swiftly reprogrammed after the first one.

Sometimes you can find replacement batteries for car key fobs at hardware stores, large retailers, or even on the internet. But, it is important to be aware of the model and make of your car prior to purchasing a fob battery because the right type isn't always easy to locate.

A CR editor found a battery that fit the key fob she owned however, it was for a different car. This meant that while she was able to start the emergency car key repair and unlock the doors, she wasn't capable of lowering the windows.

Fortunately, dealers can assist you in this instance, as most of them have the equipment needed to reprogram a fob to the specific vehicle. Certain European automobiles, like those manufactured by Audi and BMW, will usually require an authorized dealer for this service because they use special security features that can only be reset by the manufacturer. Other dealers we spoke with, 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 have tried changing the battery and reprogramming the key fob, but you still cannot start your car, it could be time to replace the button on the key. The key on your car receives lots of use and jerking over time and may get stuck or even broken. Each time you press the button on your key fob, a unique code is sent out in a pattern that the receiver in the vehicle is able to recognize. If you attempt to operate your car from a distance and not using the correct code can cause it not to recognise you and then lock the doors or shut off the engine.

You can buy replacement buttons online or at many local hardware stores. They are fairly easy to open up and install and require just a bit of clear plastic tape to cover the old button.

Contact an Auto Locksmith

It's time to speak with a professional If you're experiencing issues with your car's key button. Auto locksmiths specialise in the repair of electronic car keys and their associated locks. These experts have the tools and expertise to determine and fix issues with your key fob. This includes replacing batteries and changing the programming. They also have the skills and expertise to tackle more complex tasks like fixing broken buttons or cutting a replacement key.

The switch in the car key button is typically worn out. This is caused by overuse and exposure to the elements. The switch is made of an extremely hard plastic with multiple 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. As a result, you will need to press down harder on the switch to get it to work. This could cause further damage to the switch and shorten the life span of the switch.

Replace the battery in your key fob. You can easily find lithium-ion button or coin cell batteries in supermarkets, pharmacies and home improvement stores. Your key fob should now function after you have replaced the battery.

If the problem persists it could be because the contacts on the key fob have worn out. The contacts are rubbery and covered by an electrically conducting film that can wear out. They are exposed to elements as you use the key and are constantly exposed to moisture and dirt. They will eventually wear to the point that they can no longer make contact with the circuit board, or the sensor underneath the keypad.

The dealership can replace your key fob, but it's costly and take a lot of time. You can also contact an expert locksmith in your area who will fix your key fob at a lower price.