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How to Do a Lexus Key Fob Replacement

There are some things that every Lexus owner needs to know. Your car will eventually require a new one, whether you use a conventional key to turn the ignition on or an intelligent push-to start.

Replacing your key fob battery is fairly simple and can be done at a hardware store, locksmith or big-box retailer. Always ensure that the locksmith has the ability to programme replacement keys to your particular model.

How to Replace a Battery

If the indicator light on the LED dims and you cannot activate Smart Access or push-button starting then it's time to replace the Lexus key fob. The procedure is simple and can be completed at the comfort of your Guaynabo home. Follow these simple steps from Shottenkirk Desert Lexus and you'll be back on the road in just a few minutes.

Make sure that your hands and the area you work in are completely dry. Moisture can cause the battery to be rusty. Use an open-ended screwdriver to remove the cover of the key fob. If you want to avoid scratches, cover the tip of your screwdriver in tape. Once the mechanical key is removed, you can take out the old battery and replace it with a brand new one. Install the new battery in a way that the positive (+) face is facing up. Install the electronic module, and snap back the cover of the fob.

Remember, that if there's a problem with the key fob you have and need assistance, the knowledgeable service technicians at Shottenkirk Desert Lexus can assist you. We also offer Key Replacement Protection when you purchase or lease the Lexus vehicle. This warranty covers replacement keys and fobs, as well as the necessary programming required for synchronization with the immobiliser system of your vehicle. To learn more about this useful accessory, click here or contact our customer service team.

How to activate Battery-Saving Mode

A Lexus keyfob is a nifty piece of technology that allows you to lock or unlock your doors, and also to turn on the ignition using a push button. It is equipped with hardware that sends signals to the vehicle, e.g. to automatically open your windows. The battery in your Lexus' key fob will eventually wear out. It is essential to replace the battery as soon as you can to prevent it from compromising its function.


If you're not planning to be using your Lexus key fob for a few weeks it is possible to activate the batteries-saving mode to prevent the loss of battery. To turn it on just press and hold down the LOCK button while pressing the UNLOCK button two times. The electronic indicator will flash four times and your Lexus keyfob is now in battery saving mode. To activate the start button and Smart Access features, simply press any of the buttons on your fob.

It's simple to replace the battery on your Lexus Key Fob without the need for special tools. Start by ensuring that your hands are dry to avoid the possibility of moisture rusting the new battery. Find the small button on the side of your key ring that lets you release the emergency key blade stored inside. The mechanical key is removed by pressing the release button. Slide the new battery in with its plus-side facing up.

How to Turn Off Your Key Fob

Your key fob could appear rather basic, but it's actually packed with sophisticated technology. It allows you to lock and unlock doors, and open the trunk, of your Lexus IS 2021 without ever taking the key from your pocket. It also comes with some hidden functions that you'll be amazed by.

Consumer Reports says that the panic button on your key fob might help you locate your car in a parking garage. The attention-grabbing blare could also make thieves nervous, according to RepairPal. Keep one in your wallet or purse in case of need.

Some cars even let you start your engine with a remote key fob even in cold weather, Consumer Reports notes. Press the lock button for 10 seconds on the key fob to activate this feature. (A note of caution: This feature does not work on all vehicles, so make sure to read the owner's manual.)

You can replace your key fob or lost car keys with a dealer or locksmith service. It's essential to get the correct assistance to ensure that your new key or fob is as good as the original. For example, you'll want to ensure that the locksmith you select has the correct key blank and can program it correctly for your particular vehicle.

How to replace the Key Blade

Today's modern key fobs are more powerful than ever. They unlock cars, lock them, and even start them with the press of a button. All this technology is not free. A replacement key fob can cost anywhere from between $200 and $500, and getting it programmed by a dealer may run even more. The battery is easily and inexpensively replaced in most fobs.

To replace the Lexus keyfob battery you will need a flathead screwdriver to open the fob. If you want to avoid scratching the plastic, wrap the end of the screwdriver with tape prior to using it. Take off the electronic key module that is covering the battery prior to removing the old one. Then place a new CR2032 battery in its place, with the plus side facing upwards. Snap the electronic module back on, and then replace the key fob cover.

You can extend the life of your battery keyfob by keeping it at a minimum of three feet away from magnetic devices like laptops, TVs, and cell phones. You can also turn on the battery-saving mode simply by pressing the LOCK button, and then pressing the UNLOCK button three times. The indicator on the electronic key will flash four times in order to confirm that the battery-saving mode is activated. To resume lost lexus key of your Smart Access System and Push Button Start, press any button on the key fob.