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Five Things You Don't Know About Lexus Replacement Key
When Your Lexus Smart Key Fails

The Smart Key is an ultra-convenient feature that lets you lock and unlock your 2021 Lexus IS, open the trunk, and then start it without ever taking it from your pocket. However there will come a point when the battery on the key fob is dead.

You can replace the battery with the CR2032 Lithium batteries (available in a majority of electronic or hardware stores). Here's how!

Keyless Entry

Your Lexus key fob is equipped with components that communicate with sensors inside your vehicle to let you lock and unlock your doors, open the trunk, and turn on the ignition with a push button. This incredible convenience makes driving in a Lexus more fun than any other vehicle. However, the key fob will eventually need an upgrade to its battery in order to function properly.

The good news is that you can prolong the life of the battery on your key fob by keeping it at least three feet away from electrical appliances that produce magnetic fields, like televisions, cell phones, battery chargers, induction cookers, and table lamps. The closer your keyfob is to these devices the more power they'll draw from.

The other way to ensure that your key fob lasts for a long time is to use it only for the functions that you require. You can also reduce the use of your battery by reducing the amount of time you use your buttons. To do this, hold the LOCK button and the UNLOCK button at the same time. The electronic key indicator will flash four times to show that your key fob is in the battery-saving mode. Press any button on the key fob after the lights have stopped flashing to restore it in good working condition. To learn more about the ways to optimize your Lexus key fob to get the best performance visit our service center near Manhasset.

Immobilizer System

When you insert your key into the ignition, it transmits an ID code to a device inside the car. If the ID code is identical to one in its memory, the car's computer allows the engine begin. However, if the ID number does not match, it triggers an immobilizer that stops the engine from starting.

This technology isn't 100% secure however it does work even in the event you lose your keys. It is possible to "hack", or manipulate the radio wave anti-theft system. A thief could use an aerial antenna to detect the signal and spoof it to inform the vehicle that the key is in.

Experts are developing more secure systems to circumvent this. Some systems offer WiFi connectivity un-detectable installations, as well as pin code entry through buttons on the dashboard. Thatcham Research has developed a system of grading and approval for buyers to evaluate products.


If you are concerned about the anti-theft device in your car, replacing batteries is the simplest option. You can find the correct replacement by referring to the owner's guide. Fuses can also be a cause and should be checked regularly. Replacement parts are available at the auto parts store in case one blows.

Key Blade

Your Lexus key has a metallic emergency key blade that can open the lock cylinders of your vehicle's doors and ignition. Your key fob also contains hardware that provides communication with your vehicle's Smart Access system and push-button to start. While your key fob was designed to last a long time, daily use and exposure to weather elements can cause it's to fail sooner than you might expect. To avoid this we suggest that you keep your key fob away from your vehicle as far as you can, to stop the frequency of its proximity sensors connecting and using up battery power.

We're here to assist if the battery in your key fob goes out. We'll guide you through the process of replacing your key fob's battery and give you ways to avoid the hassle.

CLK Supplies, LLC offers top-quality Toyota Lexus key blanks. Our Holmdel dealership can assist you to locate the correct replacement part during your next visit to the store. If replace lexus key fob purchase during checkout, we'll cut your new key blade before it is shipped!

Digital Key

One of the coolest features of the Lexus key is its digital key, which allows you to lock the car, unlock it and even start your engine with a touch of a button on your smartphone. This feature lets you lower your windows or the moonroof. However, first talk to a technician and have this feature enabled.

You can also share your digital key with your family or friends, particularly when your car is in the garage on your trip. To do this, hold and press the lock symbol on your key fob while tapping the lock icon on your phone. Your Lexus will then display an "Unlock" message.

By pressing the lock and unlock button on your key fob simultaneously will activate the battery-saving mode if you are leaving your car. Press the lock button to unlock the vehicle. You can also extend the life of your key fob battery by avoiding placing it within three feet of electrical appliances which generate magnetic fields. This includes laptops, TVs, cell phones, and battery chargers. CLK Supplies, LLC in Manhasset provides top quality Toyota Lexus blank keys. These key blanks are made of high-quality materials and are backed by a manufacturer's warranty.