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How to Do a Lexus Key Fob Replacement There are a few points that every Lexus owner should know. No matter if you have a conventional key that turns on the ignition or a smart push-to start key, your vehicle will need a new battery eventually. Replacing the battery in your key fob is relatively easy and can be accomplished at a locksmith, hardware store or big-box retailer. However, you must verify that the locksmith dealer can make replacement keys for the model you have chosen. How to replace a Battery When the indicator light for the LED gets dim and you're unable to switch on push-button start or Smart Access, it's time to replace the Lexus key fob battery. The procedure is simple and can be done at your own convenience in your Guaynabo home. Follow these easy steps provided by Shottenkirk Desert Lexus to get back on the road swiftly. Make sure your hands and work area are completely dry. Moisture can cause the new battery to be rusty. Use a flathead to open up the cover of the key fob. Wrap the tip of the screwdriver with tape to protect it from scratches. After the mechanical key has been removed, you can remove the old battery and replace it with a new one. Install the new battery in a way that the positive (+) face is facing upwards. Install the electronic module, and snap back the cover of the fob. If you require assistance with your key fob the technicians at Shottenkirk Desert Lexus are available to help. We're also pleased to provide Key Replacement Protection, available when you lease or purchase an entirely new Lexus vehicle. This warranty covers fobs and keys for replacement and also programming to sync them with your vehicle's security system. To find out more about this essential add-on, click HERE or contact our support team. How do I activate battery-saving mode? A Lexus keyfob is a nifty piece of technology which allows you to lock or unlock your doors, and start your ignition by pressing a button. It has hardware that sends signals to the vehicle, e.g. to automatically lower your windows. The battery inside your Lexus' key fob will eventually run out. It is essential to replace the battery as soon as you can, to prevent it from compromising the function. If you don't plan to use your Lexus Key Fob for a couple of weeks, you can turn on the battery-saving mode. This will reduce the battery's drain. Press and hold the LOCK key while pressing UNLOCK twice. The LED 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 inside your Lexus Key Fob with no special tools. Make sure that your hands are dry to reduce the risk of moisture rusting the new battery. Then, look for the small button on the back of your key fob. This button allows you to release the emergency key blade inside. Press the release button to take off the mechanical key. Next take the new battery in with its plus side facing upwards. How to turn off your key Fob It may appear simple, but the technology inside is quite sophisticated. It lets you lock and unlock doors and access the trunk of your 2021 Lexus IS without ever having to take the key out of your pocket. It also has features that might be a surprise to you. Consumer Reports says that the panic button on your key fob may help you locate your car in the parking garage. The loud, enticing sound could deter thieves, according to RepairPal. It's a good reason to keep one in your purse or wallet just in case. Consumer Reports says that some cars will even allow you to start your car using remote fobs in cold weather. Press the lock button for 10 seconds on the key fob in order to activate this feature. ( lost lexus keys of caution: This feature doesn't work on all vehicles, so be sure you check your owner's manual.) If you've lost your car keys, or your fob is damaged, you can have it replaced through either the locksmith service or the dealer. But it's important to have the proper assistance to ensure that the new key or fob has been properly coded and functions just like the original. It is essential to ensure that the locksmith you choose has the right key blanks and is able to program them correctly for your vehicle. How to Replace the Key Blade Today's modern key fobs are more capable than ever before. By pressing the button, they're able to unlock or lock, and start cars. This technology isn't free. A replacement key fob may cost between $200 and $500. Having it programmed at a dealer may cost even more. Fortunately replacement of the battery in most fobs is inexpensive and easy. To replace the Lexus keyfob battery, use a flathead to pry open the fob. Wrap the edge of the screwdriver's flathead in tape prior to using it to avoid scratching plastic. If there is an electronic key module encasing the battery, remove it prior to removing the old one. Replace it with a brand new CR2032 in its place, with the positive side facing upwards. Snap the electronic module back on and then replace the cover for the key fob. There are several things you can do to extend the life of the battery in your key fob and that includes keeping it three feet away from electrical appliances that produce a magnetic field, like laptops, TVs, cell phones, and battery chargers. The battery-saving mode can be activated by pressing the LOCK and UNLOCK buttons twice while holding the LOCK button. The electronic indicator on the key will blink four times to confirm the battery-saving settings. Press any button on your key fob in order to resume using the Smart Access System or Push Button Start.