Lexus Launches New IS with Safety, ADAS Upgrades


PLANO, Texas – Lexus went online to launch the latest iteration of its rear-wheel-drive IS luxury sport sedan with improvements in all aspects, including safety and advance driver assist systems.

The four-door combines performance with the signature Lexus combination of comfort and driver/passenger conveniences. The company’s extensive overview of the new model can be viewed by clicking HERE and in the YouTube video below, while this post will look at the car’s upgraded safety and ADAS features.

Enhanced Lexus Safety System+

The standard Lexus Safety System+ (LSS+) found on the new IS receives additions for 2021 in the form of the new LSS+ 2.5. Features that are part of the Lexus Safety System+ have been enhanced, along with the addition of a few new ones.

The Pre-Collision System (PCS), which include Frontal Collision Warning (FCW), Automatic Emergency Braking (AEB), Pedestrian Detection and Bicyclist Detection, are enhanced with expanded range of the single-lens camera and millimeter-wave radar elements. By enhancing the radar and camera capabilities it is now possible for the system to help detect not only the vehicle ahead but also a preceding bicyclist in daytime and even a preceding pedestrian in daytime and low-light conditions.

At intersections, the system has improved recognition of an oncoming vehicle or pedestrian when performing a left-hand turn and may activate typical PCS functions if needed. Additional PCS functions include Emergency Steering Assist (ESA), which is designed to assist steering within the vehicle’s lane as cued by the driver.

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The Dynamic Radar Cruise Control (DRCC) includes a new feature that allows for smooth overtaking of slower vehicles. If traveling behind a vehicle traveling slower than the preset speed, once the driver engages the turn signal the system will provide an initial increase in acceleration in preparation for changing lanes; after changing lanes, the vehicle will continue acceleration until it reaches the original preset driving speed.

When DRCC is set and engaged, Lane Tracing Assist (LTA) is designed to provide slight steering force to help steer to the center of the lane to assist the driver with staying in the lane using lane markers or a preceding vehicle. LTA alerts the driver with a visual warning and either an audible alert or steering wheel vibration.

In the new IS, the lane recognition performance, which makes LTA possible, has been improved with enhanced recognition of line and road edge, lateral G performance, and enhanced control and stability after lane change.

Additional LSS+ 2.5 features include Intelligent High Beams, which detects preceding or oncoming vehicles and automatically switches between high beam and low beam headlights. Road Sign Assist (RSA) is designed to acquire certain road sign information using a camera and navigation maps and displays them on the multi-information display (MID). With DRCC engaged and activated, RSA can also adjust speed up to the posted speed limit if driving slower or down to the posted speed limit if driving faster than posted.

Lane Departure Alert is designed to help notify the driver if it senses the vehicle is leaving the lane without engaging a turn signal via steering wheel vibrations or audible aler

To help IS drivers change lanes with confidence, the standard Blind Spot Monitor is designed to help detect and warn you of vehicles approaching or positioned in the adjacent lanes. Standard Rear Cross Traffic Alert (RCTA) can offer added peace of mind by helping to detect vehicles approaching from either side while backing out with a visual and audible warning.

About Author

Mike Geylin

Mike Geylin is the Senior Editor for The BRAKE Report. Geylin has been in automotive communications for five decades working in all aspects of the industry from OEM to supplier to motorsports as well as reporting for both newspapers and magazines on the industry.