Car Key Button Repair
The buttons on keys for cars are exposed to a lot, especially if they are used frequently. As time passes, they may become faulty.
There are many quick fixes to make your keys work again. These solutions are not without risk, however. Altering batteries or altering your key fob's security can be dangerous. If you're not confident doing these yourself, it is recommended that you contact an auto locksmith professional.
Change the Battery
If you're noticing that your key fob not functioning as it should, it might be time to replace the battery. You can buy replacement batteries in any chain drugstore nationwide or at the parts department of your local dealership for cars. Some manufacturers even include an extra key fob battery in the packaging when you purchase your vehicle from them.
The first thing you'll have to do is find out which battery your key fob is powered by. The manufacturer will likely have this information on their website, or you can check the key fob itself. Generally speaking, the most popular battery that is used in key fobs is a button cell type, similar to those used in remote controls and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 for a pack of two.
You can remove the old battery from your key fob after you know what kind of battery it has. Most key fobs are designed with a notch or seam between them which you can either open with your fingers, or by using a flat tool like a screwdriver. After the key fob has been opened the battery will be released. Then, you can replace it with the same design. The majority of key fobs utilize CR2032 3V batteries, which are readily accessible at a variety of stores that sell AAA and AA batteries.
You can join the two halves together after you have inserted the new battery, and then test the key fob to confirm that all buttons are functioning correctly. You can determine if everything is working properly by pressing the lock and unlock buttons on the key fob while pointing it at 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 requires only the use of a phone or other device to do so.
Reprogram your key fob
If you're having trouble with your key fob, and you think that it's time to get a new one however, it may not be necessary to replace it. Instead the battery you have may need to be reprogrammed. This process is different for every car. To find out the procedure you must consult the owner's manual. It's usually available in PDF format on the automaker website. You can also search YouTube for videos.
In the majority of modern vehicles, a particular procedure is required to put the vehicle into "programming mode". This typically involves pressing the power button a few times on the driver's door or ignition while simultaneously pressing the button on the fob within a specific time frame. This is how the fob sends its digital identity code to the vehicle, and it stores it in memory. The fob will work like a regular key after it is programmed.
It is important to know that the process of reprogramming a key fob can wipe out any other key fobs that had been programmed previously. Therefore, if you wish to keep other fobs, they must be reprogrammed with care and speed following the initial one.
You can sometimes find replacement batteries for your car key fob at hardware stores, big-box retailers, or even online. However, you need to be aware of the model and make of your vehicle prior to buying a fob battery as the correct type of battery can be difficult to locate.
A CR editor discovered the battery for her key fob however, it was from another vehicle. This meant that although she could start the car and open the doors, she wasn't able to lower the windows.
Dealers can be of great assistance in this case, as they have the equipment necessary to reprogram the fob on a specific vehicle. Certain European automobiles, like those manufactured by Audi and BMW typically require you to go to 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 reprogram the key fob in a replacement provided you knew the exact model and make of your vehicle.
Replace the Button
If you've tried changing the battery and programming the key fob but not being able to start your car, it might be time to replace the button on your key. The key on your car receives a lot of use and jostling over the years and can sometimes get stuck or damaged. Each press of the button on your car key fob emits a different code in a sequence that is recognized by the receiver inside the vehicle. When you try to operate your car from a distance without using the proper code could cause it to not recognize you and lock the doors or shut off the engine.
You can buy replacement buttons online or in several local hardware stores. They are easy to open up and install and only require a little clear plastic tape to cover the button.
Contact an Auto Locksmith
If you're experiencing a problem with your car key button, it may be time to consult the experts. Auto locksmiths specialize in the repair of electronic car keys as well as their associated locks. car keys repair have the tools and know-how to diagnose and fix various issues with your key fob. This includes replacing batteries and changing their programming. They have the expertise and skills to handle more complex jobs, like repairing a broken key or cutting an alternative key.
The switch on the button for the car key is often worn out. Excessive use and exposure to elements are the primary reasons. The switch is typically made from a hard plastic and has a variety of switches on its surface. Each of these switches is responsible for activating the particular function that you use the key for. As the switch wears out over time, it becomes harder to activate each of these functions. In the end, you will need to press harder on the switch in order to enable it to function. This could cause further damage to the switch and shorten its lifespan.
Replace the battery in your key fob. It is easy to find lithium-ion button or coin cell batteries at pharmacies, supermarkets and home improvement stores. Your key fob should function after you have replaced the battery.

If the problem persists it could be that the contacts inside your key fob have become worn out. The contacts are made of rubber and are covered with an electrically conducting film that wears out. They are exposed to elements when you use the key which means they are constantly exposed to dirt and moisture. Over time, they wear down to the point where they're no longer in contact with the circuit board or sensor underneath the keypad.
The dealer can replace the key fob, however it could be costly and take a lot of time. You can also contact an emergency locksmith who will fix your key fob for a lower price.