How does lexus smart key work

In the case of the above image, the tailgate lifts by waving a foot underneath the rear bumper. Once inside, simply pressing the ignition button, usually located next to the steering column, starts the vehicle. Some smart keys, like those from BMW, can also store individual user settings so the seat, mirrors, steering wheel and even audio preferences are automatically adjusted by pressing a single button. Rather than a smart key sending out the same frequency signal over and over, which would affect all the makes and models utilizing the same key, not to mention make it easier for tech-savvy thieves to steal cars, smart keys broadcast a different encrypted signal every time you unlock a door or remotely pop the trunk.

A computer chip located inside the car is responsible for receiving the signal and prompting a new frequency to be generated. Of course, nothing is foolproof, and manufacturers are constantly working at making their technology more secure.

The most obvious plus of a smart key system is convenience. By the same token, there have been instances writing from personal experience where a driver hands a car over to another user and walks away, forgetting that the smart key is still on his or her person. To get a better visual of a smart key in action, here is a video illustrating the Intelligent Key system on the Infiniti Q Benjamin Yong is a freelance journalist and communications professional living in Richmond, B.

He is often found writing about cars and the auto industry, amongst other things, or driving around in his work-in-progress Mazda MX Skip to main navigation. Breadcrumb Home. Vehicle smart key: how does it work? February 18th Benjamin Yong. How does it work? Security Rather than a smart key sending out the same frequency signal over and over, which would affect all the makes and models utilizing the same key, not to mention make it easier for tech-savvy thieves to steal cars, smart keys broadcast a different encrypted signal every time you unlock a door or remotely pop the trunk.

Pros The most obvious plus of a smart key system is convenience. Cons By the same token, there have been instances writing from personal experience where a driver hands a car over to another user and walks away, forgetting that the smart key is still on his or her person.

Embedded video for Vehicle smart key: how does it work? Share this article:. About the Author Benjamin Yong is a freelance journalist and communications professional living in Richmond, B.

New Cars New Car Showroom. Even though smart keys are convenient, you don't want them to be unsafe. If a vehicle picks up on the low frequency transmissions of a smart key when a driver is too far from their car, another person can get into the car and even start and drive it, claims How Stuff Works Electronics.

This can happen at fueling stations, for example. To avoid theft of vehicles, many carmakers have set the maximum frequency field for several of their smart key systems at 10 cm. A smart key does not send the same frequency signal over and over. This prevents theft and makes the system safer from tech-savvy thieves. Open Road Auto Group explains that smart keys put out a different encrypted signal every time a door is unlocked or a trunk is remotely opened.

Smart keys are battery-operated, meaning the battery can become depleted. If this happens, there should be another way to lock and unlock the doors and start the vehicle.

To this end, a key blade is usually provided with the smart key. Emergency starting can also be achieved by inductive coupling, which is putting the key in the slot or holding it near a special area in the cockpit, where an inductive coil that can transfer energy is hidden.

This allows for inductive charging, even if a battery is dead. Smart keys are designed with special cases in mind. Let's say you forgot your smart key in the trunk. If you did, you can open your trunk and find the key without worrying about the keys getting locked inside. If there is more than one smart key in the car, the car will still operate normally.

Also, if the smart key gets lost during a ride, you can still drive your vehicle as long as the key is inside of the vehicle. If the smart key battery is low but not dead, it will also still operate. Many systems will inform the driver that the battery is low.

I do agree that the smart key for the 4Runner should be cooler looking than it is. Also, it feels extremely cheap. Originally Posted by Grizzld. I would think one of the biggest problems would be getting the dealership to program it. They looked at me like I was crazy when I asked them to turn off the seatbelt chime.

They would probably call the cops on me if I asked this. I traded in my limited and now have a highlander limited with the smart key.

It is the same size and shape however it is black molded hard plastic that looks much better. Originally Posted by snomobile. The highlander one has an extra button to open the power liftgate. The Rav4 one is identical to the 4Runner, minus it's black as well.

No extra button like the highlander. I really like the Lexus credit card key fob and a great idea for Limiteds equipped with a Smart Key sysyem. Just leave it in your wallet! My Limited fob came with the special edition carbon fiber???

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