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How to Change a Car Key Battery When your key fob stops working, nine times of ten, it's because of a dead battery. Fortunately, replacing the battery is simple and fast. You can purchase a replacement CR2032 Lithium battery at any Lexus Service Center, Walgreens or Camera Store. Keep an extra battery on hand. How to Replace a Key Fob Battery A key fob is a tiny remote control device that can be attached to your keys or integrated into the key itself that allows you to open and start your vehicle. It is powered by batteries and, like any battery that will eventually go out, it will also die. It is simple to replace the battery of a car key at home. One of the first indications that your key fob needs replacement batteries is lower signal strength. You might also notice that it takes several presses on the unlock button for an answer. The owner's guide (or online version) of your car should contain detailed instructions on how to replace the battery in your keyfob. If it doesn't, you can find instructions on YouTube and at an hardware store or a battery specialist shop. A small screw holds the battery in your key fob. Locate the screw and remove it, but be sure to put it away in a safe spot (such as an resealable plastic bag) to ensure that you don't lose it. Utilize a small screwdriver and break open the case to reveal the battery. Some fobs have clips that hold the battery in place; in that case it is possible to gently lift them up to remove the battery. Replace the old battery with a new one, making sure that it's fitted with the positive side facing up. How to Unlock Your Car by using a dead key fob Battery We've all experienced it: you pull up to your car, press the unlock button, and nothing happens. The car won't even open, and your key fob battery has probably died. Thankfully, Lexus (and all other major manufacturers) have taken this into account and included a mechanical emergency key inside the key fob. The mechanism can be accessed by sliding it in or pressing a small button, usually on the side of the key fob, that will take off the key fob cover. The cover will reveal a steel emergency key that you can place into the door lock manually that will then open your vehicle. When the key fob dies but you're still able to utilize this method to roll down your window or moonroof. You'll need an expert program your Lexus for this feature and once it's been enabled, you can use the key fob as a button and push it to open the windows. It isn't possible to raise the windows or the moonroof until they are rolled down. Be aware that the key fob will continue to need its regular battery replacement, and you'll need to take steps to keep it fully charged and operating efficiently. This includes keeping it out of the cold, avoiding direct sunlight, and ensuring it's connected to a charger at all times. How to roll down the Windows with a Key Fob Battery Every year, new models bring more advanced features to cars. The key fob is one of the most useful features of 2021 Lexus models. It lets drivers lock and unlock doors, open trunks, and start cars without ever needing to remove the key from their pocket. Did replacement lexus key know that the key fob can be used to do more than unlock doors? Earnhardt Lexus will show you how to use your key fob in this blog. With the key fob, you can lock and unlock your vehicle and also roll down your windows and sunroof. Press the unlock button twice, then hold it after the second press. The windows and sunroof will start to slide down however you can stop them at any point by pressing the unlock button a second time. Another great feature that some key fobs have is the ability to call your car. This feature is great for those trying to locate parking in a congested location or if you need your car to pull you out of an area that is tight. Press the lock button twice on the key fob, and hold it after the second. The car will start to pull or reverse away from the location and you'll be able unlock the lock when it is in the desired spot. How to unlock your vehicle by touching the door handles The majority of new cars are with keyless entry, which allows owners to open and lock their doors from a distance as well as open the trunk and start the engine. While these functions are incredibly convenient, they can create problems if the key fob battery is dying or requires replacement. It's essential to be aware of how to change the battery on the key fob, along with other methods to keep your Lexus running efficiently for a long time. Modern Lexus models do not make use of traditional keys. Instead, they utilize Smart Access keys. This is a remote control that fits in the form of a small pocket, which does the same job as an ordinary key. However, just like other remote control, it can be afflicted by a variety of issues, such as the inability to unlock or lock your vehicle from some distance. This can be a huge hassle, especially during a long working day or running out of Holmdel. Fortunately, there are a few easy steps you can take to fix this issue. Make sure that the key fob doesn't sit in proximity to any electronic devices such as cell phones, laptops, or table lamps that produce magnetic fields. You can also activate battery saving mode by pressing the lock button and unlock button simultaneously on your key fob. The indicator will flash four times to show that the keyfob is in battery saving mode.