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How to Do a Lexus Key Fob Replacement There are a few things every Lexus owner needs to know. If you have a traditional key that spins in the ignition or a smart push-to-start key, your car will need a new battery at some point. Replacing your key fob battery is quite simple and can be done at an hardware store, locksmith or big-box retailer. However, you should always check that the locksmith or dealer can create replacement keys for the model you have chosen. How to replace the battery If the indicator light on the LED becomes dim and you can't activate the push-button start or Smart Access, it's time to replace your Lexus key fob battery. The process is easy and can be done from the comfort of your Guaynabo home. Follow these simple instructions from Shottenkirk Desert Lexus and you'll be back on the road in just a few minutes. Make sure your hands and work area are completely dry. Moisture could cause the battery to rust. Use flatheads to open the cover of the key fob. If you want to protect yourself from scratches, wrap the tips of your screwdriver in a piece of tape. Once the mechanical key has been removed, you can take out the battery that was in use and replace it with a brand new one. Be sure to put in the new battery with the positive (+) side facing up. Then, reinstall the electronic key module and snap the fob cover back into position. Remember, that if you're having difficulty with the key fob you have and need assistance, the skilled service technicians at Shottenkirk Desert Lexus can assist you. We are also proud to provide Key Replacement Protection when you purchase or lease the Lexus vehicle. This warranty covers fobs and replacement keys and also programming for synchronizing them with your vehicle's security system. Click HERE to learn more about this useful feature or contact our customer service team. How do you activate Battery-Saving Mode? A Lexus keyfob is a nifty piece of technology which allows you to lock or unlock your doors, and then start your ignition with a push button. It is equipped with hardware that sends signals for your vehicle to do things like automatically open the windows. As time passes the battery inside your Lexus key fob could become low, and it's crucial to replace it as soon as possible to ensure the purpose of this vital device. If you don't plan to use your Lexus Key Fob for a few weeks, you can activate the battery-saving mode. This will decrease the drain on your battery. Press and hold the LOCK key while pressing the UNLOCK key twice. The indicator on the electronic will blink four times and your Lexus keyfob is now in battery saving mode. Press any button on your key fob to activate Smart Access and push-button starting. Changing the battery in your Lexus key fob is a simple task that doesn't require special tools. To minimize the risk of corrosion, ensure that your hands and the new battery are clean. Find the small button on the side of your key ring that releases the emergency key blade that is stored inside. Take the mechanical key out by pressing the release button. Slide the new battery into position with its plus-side facing up. How to Turn Off Your Key Fob It might seem easy, but the technology inside is quite sophisticated. It lets you lock and unlock doors and open the trunk of your 2021 Lexus IS without ever having to remove the key from your pocket. But it also has hidden functions that may surprise you. For instance the panic button on your key fob can help you find your car in a crowded parking garage, according to Consumer Reports. The loud, enticing sound could repel thieves, according to RepairPal. This is a good reason to keep one in your purse or wallet in case of need. Some vehicles even let you start your engine using a remote key fob in cold weather, Consumer Reports notes. Hold lexus key fob cost G28 for 10 seconds on the key fob to enable this feature. (A note of caution: This feature may not work with all vehicles, so be sure you read your owner's manual.) You can replace your fob for keys or car keys through a dealer or locksmith service. It's crucial to get the right help to ensure that the new key or fob is correctly coded and functions just like the original. For instance, you'll need to ensure that the locksmith you use has the correct key blank and is able to program it properly for the specific vehicle you have. How to Replace the Key Blade The modern-day key fobs today are more powerful than they have ever been. With a click of the button, they're able to unlock the door, lock it, and even start cars. However, all this technology comes at the cost of. A replacement key fob could cost between $200-$500. The programing process at an authorized dealer could cost more. The battery is easily and inexpensively replaced in most fobs. To replace the Lexus keyfob battery you will need a flathead screwdriver to pry open the fob. Wrap the tip of the screwdriver's flat head in tape before you use it to avoid scratching the plastic. Remove the electronic key module that is covering the battery prior to removing the old battery. Then, put a brand new CR2032 battery in its place, with the plus side facing up. The electronic key module should be snapped back on and put the key fob cover back in its place. You can prolong the battery life of your keyfob by keeping it at least three feet away from magnetic devices like laptops, TVs and cell phones. The battery-saving mode is activated by pressing the LOCK and UNLOCK buttons twice while holding the LOCK key. The electronic indicator on the key will flash four times to confirm that the battery-saving mode has been set. Press any button on your key fob to resume using the Smart Access System or Push Button Start.