Car Key Button Repair
The buttons on the car keys are subjected to a lot and are especially vulnerable if frequently used. In time, they could become faulty.
There are a few quick solutions that will get your keys working again. These methods are not without risk, however. Changing batteries or tampering your key fob's security can be dangerous. If you're not comfortable performing these things yourself, it's recommended to consult an expert auto locksmith.
Change the Battery
It could be time to change the battery in the case that your key fob doesn't function as it should. You can usually find replacement batteries from any chain drug store, or the parts department of your automobile dealership. Some manufacturers even include an extra key fob battery in the packaging when you purchase a car from them.
The first thing you will have to do is 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 common kind of battery that is found in keyfobs is the button cell similar to those found in remotes and watches. These types of batteries are sold at places like Walgreens and Energizer, and can be bought for under $5 for a set of two.
If you are aware of the type of battery your key fob uses then you can open it and remove the old battery. Most key fobs are constructed with a notch or seam between them, which you can open by using your fingers or by using a flat tool like a screwdriver. After the key fob is been opened the battery will pop out. Then, you can replace it in the same orientation. Most key fobs use CR2032 3V batteries, which are readily accessible at a variety of retailers that sell AAA and AA batteries.
After the new battery has been in place after which you can snap the two halves of the key fob together and check that all buttons work correctly. You can verify that everything is working properly by pressing the lock and unlock buttons on the key fob while pointing it toward your vehicle. If your vehicle is still not responding to the key fob, it might be necessary to reprogram your key fob and establish an electronic connection between the two. It's a relatively easy process and only requires the use of a phone or other device to accomplish this.
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If you're experiencing issues with your key fob and believe that it's time to get a new one however, it may not be required to replace it. Instead the battery you have may require reprogramming. 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 site of the automaker) or search YouTube for videos on how to accomplish this.
Modern vehicles require a special procedure to put the vehicle into "programming mode," which is usually done by pressing the power button on the driver's side door or ignition multiple times while pressing a button on the fob within a specified time. The fob transmits its unique digital identification code to the vehicle, which then saves it. The fob will work like an ordinary key once it is programmed.
It is important to remember that reprogramming a key fob will erase any other key fobs that had been programmed previously. If you wish to keep the other fobs following the first, they should be programmed quickly and carefully.
Sometimes you can find replacement batteries for car key fobs at hardware stores, large retailers, or even on the internet. However, you must be aware of the model and make of your car before purchasing a fob battery because the correct type of battery can be difficult to locate.
A CR editor stumbled across the battery for her key fob, however, it was from a different vehicle. This meant that she could start her car and open the door, but she couldn't lower the windows.
Fortunately, dealers can assist you in this instance and most dealers have the necessary equipment to reprogram a fob for the specific vehicle. Dealers are required to perform this procedure on certain European cars such as Audi and BMW because they have specialized security features that can only be reset at the factory. Other dealers we spoke with, including those from Toyota and Lexus, were willing to try reprogramming a replacement fob as provided you know the exact make and model of the vehicle you are driving.
Replace the Button
If you have tried changing the battery or reprogramming the key fob, but you still cannot start your car, it may be time to replace the button on your key. The key on your car receives many uses and jostling over the years and can become stuck or broken. Every time you press the button on your key fob generates a unique code in a sequence that is recognised by the receiver inside the vehicle. If you attempt to operate your car from a distance without the correct 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 in several local hardware stores. They are easy to open and install and only require a little clear plastic tape to cover the button.
Contact an Auto Locksmith
It could be time to consult the experts If you're experiencing issues with your car's key switch. Auto locksmiths are experts in the repair of electronic keys and locks. They have the experience and tools required to recognize and fix a range of issues with your key fob including replacing batteries and changing the programming. They have the knowledge and expertise to tackle more complex jobs, like fixing a damaged key or cutting the replacement key.
One of the main reasons for a car's key button to stop working is that the switch inside has worn out. This is caused by overuse and exposure to the elements. The switch is constructed of hard plastic and has several switches on its surface. Each switch activates the function that you select with the key. As the switch ages over time, it becomes harder to turn on each of these functions. You will have to exert more pressure on the switch to make it work. This could cause further damage to the switch, further decreasing its lifespan.
Replace the battery in your key fob. It is easy to locate lithium-ion button or coin cell batteries at pharmacies, supermarkets and home improvement stores. Your key fob should now be working after replacing the battery.
If the problem persists it could be that the contacts inside your key fob are worn out. The contacts are made of rubber, and covered by an electrically conducting film that can wear out. They are exposed to the elements while you use the keypad, so they're constantly being exposed to moisture and dirt. In time, they'll become worn until they're no longer in contact with the circuit board or sensor underneath the keypad.
You can try to get the key fob replaced by visiting a car dealership, however this could be expensive and may take an extended time. The other alternative is to contact a local locksmith for your car who will be able to repair your key fob and help you save money.