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How to Do a Lexus Key Fob Replacement There are a few things every Lexus owner needs to know. No matter if you have a conventional key that turns on the ignition or a smart, push-to-start key, your vehicle will require a new battery sooner or later. It is simple to replace the battery on your key fob at a hardware store, big-box retailer or locksmith. However, you should always ensure that the locksmith or dealer can make replacement keys for your specific model. How to replace the battery If the LED indicator light is dim and you are unable to activate push-button start or Smart Access, it's time to replace the Lexus key fob battery. The procedure is simple and can be completed from the comfort of your Guaynabo home. Follow these easy steps provided by Shottenkirk Desert Lexus to get back on the road swiftly. Make sure your hands and area of work are completely dry. Moisture could cause the battery to rust. Then take a flathead screwdriver to open the key fob cover. Wrap the top of the screwdriver with tape to protect it from scratches. Once the mechanical key has been removed, you can remove the old battery and replace it with a new one. Make sure you insert the new battery with the positive (+) side facing up. Install the electronic module, and then snap back the cover for the fob. Be aware that if you're experiencing difficulties with your key fob and require assistance, the knowledgeable service technicians at Shottenkirk Desert Lexus can assist you. We're also pleased to offer Key Replacement Protection, available when you purchase or lease a brand new Lexus vehicle. This warranty covers fobs and replacement keys as well as programming required to connect them to your vehicle's security system. Click HERE to learn more about this helpful feature or contact our customer support team. How to activate Battery-Saving Mode A Lexus keyfob is an advanced piece of technology which allows you to lock or unlock your doors, and even start your push button ignition. It's got hardware that transmits signals to the vehicle, e.g. to automatically open your windows. As time passes, the battery in your Lexus key fob may run low, and it's vital to replace it as soon as you can to ensure that you don't compromise the functionality of this crucial device. If you aren't going to use your Lexus Key Fob for a couple of weeks, you can activate the battery-saving mode. This will help reduce the battery's drain. Press and hold the LOCK key while pressing UNLOCK button twice. The electronic indicator will flash four times and your Lexus key fob is now in battery-saving mode. To reactivate the push-button start and Smart Access features, simply press any of the buttons on the fob. It's simple to change the battery in your Lexus Key Fob without any special tools. To reduce the chance of rusting, make sure your hands and new battery are completely dry. Then, look for the small button on the side of your key fob that allows you to release the emergency key blade inside. Push the release button and take out the mechanical key. Slide the new battery into position with its plus-side facing up. How to turn off your key fob It may seem straightforward, but the technology inside is very sophisticated. It allows you to lock and unlock doors as well as access the trunk of your 2021 Lexus IS without ever having to remove the key from your pocket. But it also has secret functions that might surprise you. For example, the panic button on your key fob can help you locate your car in a crowded parking garage, says Consumer Reports. The attention-grabbing blare could also make thieves nervous, according to RepairPal. It's a good reason to keep one in your wallet or purse just in case. Some cars allow you to start your engine using a remote key fob even in cold weather, Consumer Reports notes. Hold the button for 10 seconds on the key fob to enable this feature. (A note of caution: This feature does not work on all vehicles, so be sure you read your owner's manual.) You can replace your key fob or lost car keys through an auto locksmith or a dealer. However, it is essential to have the right assistance to ensure that the replacement key or fob is properly programmed and functions exactly like the original. You'll want to ensure that the locksmith you hire has the right key blanks and can program them in a way that is appropriate for your car. How to replace the Key Blade The latest high-tech key fobs are more secure than ever. By pressing the button, they're able to unlock, lock, and even start automobiles. This technology isn't free. A replacement key fob could cost between $200 to $500. Programming it at a dealer might cost more. Fortunately that replacing the battery in the majority of fobs is fairly inexpensive and simple. To replace the Lexus keyfob battery Use a flathead tool to open the fob. If you'd like to avoid scratching the plastic, wrap the edge of the screwdriver in tape prior to using it. If there is an electronic key module that covers the battery, take it off before popping out the old one. Then, put a brand new CR2032 battery in its place, with the plus side facing up. The electronic module should be re-snapped on, and then replace the key fob cover. There are some things you can do to prolong the lifespan of your key fob's battery, such as keeping it three feet away from electrical appliances that produce magnetic fields, such as TVs, laptops, cell phones and battery chargers. The battery-saving mode is activated by pressing the UNLOCK and LOCK buttons two times while holding the LOCK button. The electronic indicator on the key will blink four times to confirm that the battery-saving setting is in place. Press lost lexus keys on the key fob to start using the Smart Access System or Push Button Start.