LEXUS UNVEILS THE ALL-NEW RZ, THE FIRST PURE BATTERY EV FOR GLOBAL MARKETS

Lexus is proud to unveil details of the new “RZ”, the luxury brand’s first globally-available pure battery electric vehicle (BEV) model.

Since the launch of the RX400h in 2005, Lexus has been a pioneer of electrification within the luxury market. As with the first RX hybrid model, our engineers have instilled our hybrid electric vehicles with an excellent driving identity and environmental performance. In 2019, Lexus’ fundamental approach towards vehicle electrification evolved thanks to the Lexus Electrified vision. Lexus aims to invigorate all guests’ love for driving exhilaration, in hopes to broaden its Lexus Electrified portfolio of hybrid electric (HEV), battery electric (BEV), and plug-in hybrid electric (PHEV) products to exceed the needs and expectations of a more diverse set of luxury buyers.

The portfolio expansion will move Lexus towards another essential goal: The realization of a sustainable global society. Lexus will contribute to the realization of a carbon-neutral society by offering a full lineup of BEVs in all categories by 2030. Five years later, Lexus seeks to attain 100 percent BEV sales globally. To meet these challenges, Lexus will rigorously improve its products, along with the expertise of its personnel, by repeating “drive and fix” development at Shimoyama , Lexus’ new operational base.

As Lexus’ first globally-available dedicated BEV model, the new RZ marks Lexus’ transition into a BEV-centered brand and embodies the unique Lexus vehicle design and driving experience brought on by advanced electrification technology. For driving performance, the use of a BEV-specific platform, as well as a lightweight and highly rigid body, has greatly evolved the fundamental performance of the vehicle by achieving optimal weight distribution through ideal placement of the battery and motor. Additionally, the adoption of a new Steer-by-Wire control and system, along with the DIRECT4 all-wheel drive system using electrification technology, enables vehicle control that is faithful to the driver’s intention. An exhilarating driving experience is perceived, allowing the RZ to feel like a true extension of its driver. Furthermore, we pursued the creation of an audio sound that seamlessly conveys vehicle condition changes to the driver. These efforts are being carried out at Lexus’ new development base, in order to enhance the unique Lexus driving flavor, the “Lexus Driving Signature.”

The exterior design expresses the seamless acceleration and dynamic torque-filled performance specific to BEVs. Lexus’ identifiable spindle grille is replaced by a BEV Spindle Body which focuses on aerodynamic efficiencies, optimized proportions, and style, versus serving the cooling and exhaust needs of an internal combustion engine. This styling evolution ushers in a new Lexus aesthetic and establishes a new design direction for BEV offerings. Within the spindle body is a minimalist, spacious interior focused on amplifying a sustainable mobility message and Sustainability Development Goals (SDGs) through its application of mindfully-sourced materials. Though simplistic, the space is luxurious thanks to its crafted touches and advanced technologies. In addition, the cabin features an available panoramic roof which visually opens the space, while passenger comfort is improved by a highly efficient heating system featuring a Lexus-first radiant heater.

MAIN PRODUCT FEATURES OF THE ALL NEW RZ

1. The evolution of the uniquely personalized Lexus Driving Signature using electrification technology

• DIRECT4, a new all-wheel drive force distribution system that supports predictable and faithful driving performance     according to the driver’s intentions
• New, stronger human-machine connection made possible through a Steer-by-Wire system
• Achieves excellent driving performance with a dedicated BEV platform that enhances its fundamental characteristics
• Achieves a balance between sound generation and a very quiet interior space – the DNA of Lexus
• Aerodynamic performance that contributes to driving performance and a cutting-edge design specific to BEVs
• Battery EV system utilizing technology cultivated over many years with HEVs

2. A design that pursues a unique identity and proportions born from a dynamic driving experience

• The new spindle body and vehicle proportions that express the athletic Lexus BEV personality
• Side and rear designs that express the dynamic performance brought about by electrification technology
• Exterior colors that enhance the BEV character
• Clean and expansive Omotenashi interior space
• A human-centered cockpit that maximizes driving pleasure
• Ambient illumination and interior colors for a comfortable interior

3. Advanced safety technologies and Omotenashi features that enrich the travel experience

• Advanced preventive safety technology Lexus Safety System+
• Omotenashi functions that create a comfortable space
• New functional values made possible through advanced technology.

TAKASHI WATANABE, CHIEF ENGINEER, LEXUS ELECTRIFIED LEXUS INTERNATIONAL

We believe that Lexus, an established luxury automaker, should continue pursuing the creation of exciting cars while respecting nature and the global environment to achieve a carbon-neutral society. The RZ has been developed with the aim of creating a uniquely Lexus BEV that feels secure to ride in, is pleasing to the touch, and is exhilarating to drive. DIRECT4, the core technology of Lexus Electrified, is all-wheel drive system that achieves quick and linear response according to driver input. With the transition to BEV, we pursued a special design with functional simplicity featuring the evolution of the spindle grille to the new Lexus spindle body architecture and a cockpit space incorporating the Tazuna concept focusing on driver operation.  We will continue to take on the challenge of providing guests with new experiences and a uniquely Lexus BEV driving experience.

Main specifications of the new RZ (prototype)

 *¹ DIRECT4 is a registered trademark of Toyota Motor Corporation.

*² J-WLTC mode development target values

THE EVOLUTION OF THE “LEXUS DRIVING SIGNATURE” THROUGH ELECTRIFICATION TECHNOLOGY

The “Lexus Driving Signature” is a uniquely Lexus driving experience that aims to achieve predictable, linear response according to the driver’s intentions. LDS provides an exhilarating feel of seamlessly connected acceleration, steering, and deceleration under all driving conditions. The RZ possesses impressive fundamental performance by using high-precision motor torque control, as well as optimal battery and motor placement, to achieve ideal weight distribution and high response. The concept is called “The Natural” and is based on the “DIRECT4” all-wheel drive system that controls front and rear drive force according to driving and road surface conditions. It achieves driving performance where the vehicle directly responds according to the driver’s input, elevating the aspect of the “Lexus Driving Signature”.

THE ELECTRIFICATION TECHNOLOGY THAT SUPPORTS PREDICTABLE AND FAITHFUL DRIVING PERFORMANCE

• DIRECT4, a new Lexus-first, all-wheel drive system, and the newly developed high-output eAxle motor continuously controls the drive force of the four wheels with high precision. It works according to the ground contact load of the vehicle regardless of road surface and driving conditions to achieve an exhilarating driving experience in line with the driver’s intention.
• The DIRECT4 drive force distribution control uses wheel vehicle speed, acceleration, and steering angle sensor information to control front-to-rear drive force ratio distribution between 100:0 and 0:100. This contributes to improved start-up acceleration, handling stability, and low power consumption. The system uses an approximate front-to-rear drive force ratio distribution between 60:40 and 40:60 to minimize vehicle pitch during launch and straight-line acceleration, thereby achieving a direct acceleration feel. Vital information such as cornering speed and steering angle help to optimize drive force distribution according to various driving conditions and helps attain excellent handling stability. When the steering wheel is turned, drive force is biased to the front wheels (distributing drive force between 75:25 and 50:50) so RZ responds nimbly and provides excellent steering feel. When exiting a corner, torque distribution to the rear wheels is further increased (between 50:50 and 20:80) to ensure ample traction while controlling vehicle pitch. For RZ, engineers have achieved a refined driving feel by orchestrating the seamless operation of their accumulated electrification and dynamic vehicle movement control technologies.
• The newly developed eAxle fully integrates the motor, transaxle, and inverter within a compact unit to benefit cruising range, spacious interior, and excellent design. The front eAxle is packaged with a short front/rear system layout, while the rear eAxle features a low-profile layout contributing to increased interior and cargo space. In addition, the use of a high-efficiency inverter having a Silicon Carbide (SiC) element in the rear, contributes to an increase in cruising range.
• A new pressurization unit enables coordinated front and rear regenerative braking through independent front and rear hydraulic control. The new braking system aims to provide seamless, direct, and controlled braking under the direction of the Lexus Driving Signature. Based on Lexus’ hybrid electric technology experience and achievements over the years, the regenerative braking system improves energy efficiency to increase cruising range, while enhancing brake feel. Stable vehicle posture is achieved by optimizing the distribution of braking force to the front and rear wheels in response to the amount of braking by the driver. Furthermore, ergonomic brake pedal pads are used for easy pedal changes and pedal depression.

STEER-BY-WIRE WITH INNOVATIVE STEERING CONTROL ELEVATE THE HUMAN-MACHINE CONNECTION

• A Lexus-first Steer-by-Wire system with advanced steering control adds as an option to the traditional circular steering wheel to create an enhanced communicative relationship between human and machine. Steer-by-Wire enables the electronic exchange of steering and road surface information between the advanced steering control and tires via electrical signals, not mechanical linkage.
• The control’s steering angle is set at approximately 150 degrees, thus greatly reducing the driver’s workload and eliminating the need for hand-over-hand operation at intersections, U-turns, parking, winding roads, and other driving situations. Unhindered by a sizeable standard steering wheel, designers crafted the steering control’s compact shape and lowered the instrument meter’s placement to encourage driver engagement and environmental awareness.
• A cockpit space encouraging further engagement with the car has been achieved by minimizing driver’s eye movement during driving and naturally drawing the driver’s eyes forward. With steer-by-wire enabling the electronic exchange of steering and road surface information between the steering wheel and tires via electrical signals, more focus was placed on the quality and transmission speed of important driving information. It achieves maneuverable and confidence inspiring performance through precise judgment, by blocking out unnecessary vibrations from the tires and brakes, only relaying vital driving information such as road information to the driver.
• When lane tracing assist is activated, tire movement is controlled as needed, allowing for gentle steering and vehicle movement. Furthermore, in addition to the vehicle’s overall maneuverability, it provides nimble and agile performance on winding roads and high-speed stability on the highways by optimizing the steering gear ratio according to vehicle condition.

A DEDICATED BEV PLATFORM THAT IMPROVES VEHICLE FUNDAMENTALS AND HIGHLY DYNAMIC PERFORMANCE

• RZ utilizes a Lexus-first dedicated BEV platform to significantly evolve the fundamental performance of the vehicle and provide the exhilarating joy of driving. The platform offers high levels of stability and ride comfort by mounting the battery under the vehicle floor and features a low center of gravity and moment of inertia. The body is strengthened by reinforcing the radiator support area and adding a V-shaped brace for excellent handling performance. In addition, the tower bar and fender braces improve steering response, while the reinforcement in the lower back section improves rear tracking. Performance Dampers^®*¹ are installed at the front and rear depending on the grade to reduce unnecessary body movement and provide more direct response.
• Laser screw welding (LSW), structural adhesives, and laser peening welding technologies are proactively used to join the body frame to improve handling stability and ride comfort. The addition of a double ring structure and a highly rigid foaming agent prevents distortion to reduce deformation of the rear luggage opening. To support longer cruising ranges, the front/center pillars and front rails a patchwork construction method is adopted, in which 1.8 GPa and 1.5 GPa materials are layered on top of each other.
• Up front, RZ rides atop MacPherson strut type suspension, while its rear uses a trailing arm double wishbone configuration. For the first time, Lexus uses Frequency Reactive Dampers (FRD*² II), a frequency-sensitive absorber that alters the dampening force on the extension stroke in response to road surface frequency input. The FRD setup gives a high level of handling stability without compromising ride comfort. With FRD and optimized dedicated BEV platform, key LDS traits such as the precise control of sprung weight, along with natural posture changes, a tactile steering feel, and the linear responses of steering, braking, and acceleration operations are enabled.

A QUIET SPACE HAVING A SPECIAL LEXUS SOUND

• Under the Lexus Electrified vision, Lexus engineers pursue the creation of expressive in-cabin sounds that convey the exhilaration of driving by establishing a dialogue between the car and the driver. For RZ, engineers did so by matching sound frequencies to the vehicle’s speed and sound levels during dynamic actions such as acceleration. The tone and acoustic transmission characteristics of the drivetrain’s sounds were tuned to ensure its pleasantness.
• Quietness is also pursued to maximize interior cabin comfort. The underfloor battery functions as a sound barrier and the entire perimeter of the hood opening is sealed to eliminate noise caused by turbulent airflow. In addition, unwanted noise is suppressed through the use of front/rear seat acoustic glass, and the new weather-stripping cross section creates quiet, conversation-friendly space, even when driving at high speeds.

A BEV DESIGN SHAPED BY AERODYNAMIC PERFORMANCE

• With the sides of the distinctive roof spoiler suppresses aerodynamic force acting on the body when a crosswind occurs, thereby ensuring driving stability. The center of the roof is shaped to allow air to flow smoothly from the sloped rear glass surface to the rear of the vehicle. The ducktail shape on the end of the trunk reduces aerodynamic drag by balancing the aft air flow. In addition, the generated downforce also contributes to a stable driving feel. An undercover is used to flatten the underbody to reduce aerodynamic drag. The front cover has a dimpled surface that generates micro vortices under the floor, enhancing the sense of ground contact and contributing to stability.
• Having no engine to cool has resulted in a low hood design and minimal front grille opening. The grille uses a grille shutter to improve aerodynamic efficiency. When cooling air is not required, the grille shutter is closed to reduce air resistance.

A BATTERY EV SYSTEM INFORMED LEXUS’ HEV DEVELOPMENT

• We developed a system that maximizes the advantages of the dedicated platform by using technology and knowhow derived from our hybrid electric vehicle development. The use of BEV-exclusive high-capacity batteries and silicon carbide power semiconductor elements in the inverter*³ as well as the incorporation of low-loss technologies cultivated in the development of HEVs, contribute to extending the single-charge cruising range of the vehicle, which is estimated to be 450 km (280 mi).
• High-output charging capability*⁴ meets the needs of guests in each country. In general, the input/output performance of lithium-ion batteries declines in low temperatures, but the RZ’s battery warming system*⁵ allows for the charging of batteries in a short time.
• Improved battery control technology ensures a world-class battery capacity retention rate (90% or more after 10 years) and allows guests to confidently drive the vehicle for long periods of time. Furthermore, it becomes possible to maintain an even higher battery capacity by combining this with a timer charging function*⁶.

*¹ Performance Dampers is a registered trademark of YAMAHA Motor Co., Ltd.

*² FRD: Frequency Reactive Damper

*³ First use of silicon carbide power semiconductor elements in the inverter by Toyota/Lexus

*⁴ DC fast charge standards for each specification are as follows.

North America and Europe: CCS2 standard compliant

*⁵ The use of a high-voltage air conditioning heater, in addition to a low-voltage battery warming heater, allows more heat to be supplied to the batteries compared to conventional battery warming systems.

*⁶ Timer charging function: Prevents accelerated deterioration by avoiding charging immediately after driving. Charge limit setting function: Prevents accelerated deterioration by avoiding a full charge (high SOC)

A DESIGN THAT PURSUES A UNIQUE IDENTITY AND PROPORTIONS BORN FROM A DYNAMIC DRIVING EXPERIENCE

Following the NX and LX introduced in 2021, the new RZ aims to establish the design language of the next generation of Lexus by pursuing a unique identity and proportions born from a dynamic driving experience.

The design concept is “Seamless E-Motion”, expressing seamless acceleration and a dynamic sense of torque unique to a BEV. Furthermore, the elimination of the internal combustion engine has changed the functional requirements of the front end and challenged Lexus to create a new visual identity through the adoption of a “spindle body” design. The interior is inspired by the BEV’s dynamic performance, presenting a clean and nimble image. A sense of refinement and high-quality craftsmanship exists, even within a space pursuing functional essence. Based the innovative Tazuna concept, the cabin welcomes its passengers with an airy feeling and intuitive controls specifically oriented around the driver. As such, the Tazuna inspiration seamlessly connects human with machine and emphasizes concentration on driving.

MAIN FEATURES OF THE EXTERIOR

THE NEW SPINDLE BODY EXPRESSION AND PROPORTIONS THAT EMPHASIZE THE UNIQUENESS OF A LEXUS BEV

• Designers penned a form that is instantly recognizable as a Lexus BEV by emphasizing a sturdy stance possessing a low center of gravity. This combination reflects the vehicle’s excellent driving performance. The staggered front and rear tires use a wider tread in the rear, and the large diameter tires effectively transmit the power from the high-output motor to the road surface. The distinct BEV silhouette starts with a low nose and moves smoothly towards the cabin, featuring a rearward peak, giving an impression of ample rear seat comfort. The profile uses the long wheelbase to create a stretched impression; elongated doors run horizontally across the vehicle.
• The spindle grille, an icon of Lexus design, is no longer expressed as a graphic, but as a three-dimensional mass that has evolved into a new expression called the spindle body. The three-dimensional front fenders – made possible through the combined efforts of design and manufacturing technology – flank both sides of the central spindle body, while the shapes and color scheme assert the Lexus BEV character.

SIDE AND REAR DESIGNS REFLECTING THE EXHILARATION OF ELECTRIFICATION

• For the sides, the front fenders seemingly wrap around the wheels and tires, then flow rearward to express a powerful forward-moving momentum. The strong three-dimensional shape over the rear fenders emphasizes the tires’ width and communicate the dynamic performance image of DIRECT4. In addition, the flowing contrast of the doors’ sculpted shapes aims to achieve a captivating and scintillating surface.
• The rear of the BEV features a clean and simple horizontal design matched to hips highlighting the wide stance; it is a look that accentuates the RZ’s torque-filled performance identity. A new spelled out Lexus logo (as first seen on the recently launched NX) resides on the horizontal rear combination lamps. The lowered center portion of the red lens accentuates the logo type and emphasizes a sharp look.

EXTERIOR COLORS THAT ENHANCE THE BEV CHARACTER

• Six exterior colors are also available, including “Aether Metallic,” which evokes the nimble driving performance of BEVs, and “Sonic Copper,” Lexus’ newest metallic texture.
• Furthermore, an available bi-tone color scheme lays solid black from the front of the spindle body to the upper hood and roof. The livery provides a modern vibe that underscores the RZ’s spindle body.

MAIN FEATURES OF THE INTERIOR

AN EXPANSIVE AND MINIMAL OMOTENASHI SPACE

• The flowing shape originating at the cowl and leading to the doors integrates with the low positioned instrument panel, while the simple door trim and console passing between the driver and passenger seat present a clean, wide-open impression. In addition, the ultra-suede^®* door trim ornamentation, seats, and upper wood-grain console create a refined Omotenashi space.
• The long wheelbase provides a spacious rear seat space with a couple distance of 1000 mm (39.3 in). In addition, the rearward peaked cabin silhouette allows for ample rear headroom providing a sense of spaciousness for the passengers. In addition, the available panoramic roof further lends a sense of wide openness and front-to-rear expansiveness.
• Three types of seat materials are used, including Ultrasuede, an upholstery material that pursues a sense of warm refinement using 30-percent-bio-based sustainable materials. The combination of a clean, modern space and simple surfaces with a focus on texture, expresses a welcoming sense of freedom.

 *Ultrasuede is a registered trademark of Toray Industries, Inc.

A COCKPIT THAT MAXIMIZES DRIVING PLEASURE

The front cockpit is based on the Tazuna concept, a layout that advances Lexus’ human-centered philosophy. Inspired by Tazuna reins that riders use to control horses, the steering wheel features switches that are precisely synced with the Head-Up Display (HUD), creating a space where drivers can control various functions such as navigation, audio, and drive mode select while concentrating on driving. The need to shift their eyes or operate complicated switches is thus minimized.

• The center display utilizes a large touch display, with many functions integrated into the soft switches within the display. Close attention was paid to the size, shape, layout, and display information of the switches. This allowed the pursuit of the optimum shape and placement for intuitive operation, while also considering frequency-of-use for each function. In addition, a Lexus-first dial shift knob is mounted on the center console through the application of Shift-by-Wire. The delicately crafted design offers an impressive texture and achieves smart single-action shifting while contributing to the simple, clean cockpit layout.

AMBIENT ILLUMINATION AND INTERIOR COLORS THAT PAINT THE COMFORTABLE INTERIOR

• Three ambient illumination color schemes include the clean and Progressive Orage, Glamorous Hazel, and Modern Grayscale. The interior is tailored to suit the guest’s lifestyle.
• Ambient illumination offers a rich experience while driving. The recommended 14 colors represent the emotions and feelings experienced when viewing beautiful natural phenomena. In addition, the world’s first Shadowy illumination (IN-EL) changes the shade of light projected on to the door trim ornament when the doors are opened and closed, adding new flair to the interior space.

ADVANCED SAFETY TECHNOLOGIES AND OMOTENASHI FEATURES BASED ON A HUMAN-CENTERED APPROACH

LEXUS SAFETY SYSTEM+, AN ADVANCED PREVENTIVE SAFETY TECHNOLOGY

Lexus is developing safety technologies in line with its ultimate wish for a mobile society: Minimal fatalities and injuries from traffic accidents. The RZ uses the latest Lexus Safety System+ based on the belief that it is important to develop world-class advanced safety technologies faster and adopt them into more vehicles. The addition of Proactive Driving Assist support situations and optimal control based on driver monitor linked driver conditions will further contribute to the guests’ safe and secure drive.

MAIN PERFORMANCE-ENHANCING FEATURES

• The following functions, in conjunction with the optional driver monitor, support guest driving.
  • Pre-Collision Safety [PCS*¹]: If the system detects a driver looking sideways or falling asleep at the wheel, it warns the driver at an early stage. It secures driver reaction time to avoid collision and damage.
  • Radar cruise control (with full-speed follow function): Alerts the driver when the driver is drowsy or looking sideways while the alert function is enabled and provides supportive control to secure a safe distance margin during normal driving.
  • Lane Departure Alert [LDA*²]: If the system detects that the driver is looking drowsy or sideways, it activates an alert or lane departure control at an earlier time than usual.
• Advanced Park
  • Expanded support for parallel parking. In addition to conventional back-up parking, forward-facing parking is now supported, enabling forward-facing/back-up exit.

CREATING A COMFORTABLE SPACE WITH VARIOUS FUNCTIONS

• Radiant Heaters:
  • To maximized cruising range and passenger comfort (film-type) *³ radiant heaters and high-efficiency heat pump system are in place near the front passengers’ feet and legs. The radiant heaters can raise the temperature up to approximately 100 degrees C (212 degrees F), quickly providing comfort by warming the passenger’s feet. Safe usage is ensured by automatic shut-off technology that instantly lowers the heaters’ temperature when human contact is detected. Furthermore, when in use, the thermal devices (seat heaters and radiant heaters) work in conjunction with the air conditioner to provide a warm room temperature while reducing battery consumption.
• Panoramic Roof:
  • The panoramic roof, which extends from the top of the front seats to the heads of rear seat passengers, contributes to a sense of wide-open space. The sunshade has been eliminated to avoid cramped headspace, caused by the rise in floor level due to the battery being mounted under the floor. In addition to the shade-less design, the Low-E glass secures ample headroom and provides heat shielding, thermal insulation, and 99% UV protection which enables the vehicle interior to be kept comfortable even in harsh environments such as direct sunlight and under ultraviolet rays. Furthermore, the glass roof equipped with a Lexus-first dimming function, which instantly blocks light according to the needs of the passengers.

NEW ADDED VALUE THROUGH ADVANCED TECHNOLOGY

• Replacing the unlatch door mechanism with an electronic switch controlled “e-latch system” delivers smooth door operation and effortless feeling.

*¹ PCS= Pre-Collision System
*² LDA= Lane Departure Alert
*³ Located at the bottom of the steering column and at the bottom of the passenger instrument panel