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2010 Lexus HS 250h Overview Part II: Technology

Driver-Inspired Technology
From the driver’s perspective, several important developments inside the HS 250h transform the driving experience, making it easier and more enjoyable while also helping to enhance the driver’s attention to the road ahead.

A new standard multi-media package offers a comprehensive suite that includes voice recognition, Bluetooth® technology, integrated satellite radio (subscription required – first three months free) and USB iPod connectivity operated via steering wheel controls or from the display screen. A multi-information display situated in the instrument cluster keeps the driver informed of the numerous actions controlled by the steering wheel-mounted switches.

The HS 250h’s next generation navigation system is optional and, as noted earlier, features Lexus’ exclusive Remote Touch controller with user-adjustable haptic feedback. The innovative controller, similar to a computer mouse, eliminates the need for touch screen controls, allowing the pop-up navigation system screen to be mounted further up the center stack and away from the driver. The driver benefits with a clear, high-resolution screen, improved site lines and reduced eye movement. These advances combined with the physical feedback provided by the controller make the system extremely easy to use.

A new casual-language voice recognition feature, Voice Command, is standard on navigation-equipped vehicles. This new technology, previously only available on the 2010 Lexus RX350 and RX450h, allows the driver to give more flexible, conversational commands for easier access to audio and climate, as well as navigation system functions. Voice Command users avoid having to speak commands in a specific order (e.g., “Phone > Dial by Name > Dial Bob”). This same task can now be completed simply by saying, “Call Bob at home.” The Voice Command system also works to control many functions of the audio system, heating and air conditioning, and the navigation system. Commands such as, “Make it cooler,” “Let’s find XM channel 46,” “Show me Japanese restaurants,” and “I need a gas station,” make tasks easier to accomplish, in fewer steps, and help allow drivers to focus more on the road ahead.

As part of the all-new Lexus EnformTM navigation platform, the HS 250h also features XM NavTraffic® and XM NavWeatherTM services. These XM services will offer 3-month trials, after which subscriptions will be required. XM NavTraffic informs the driver of current traffic conditions with real-time traffic displays. When traffic problems are detected, in order to avoid them, the navigation system alerts the driver so that the route can be adjusted. XM NavWeather will provide near real-time weather conditions as well as spoken and nav-screen forecasts, both based on official National Weather Service data.

Also standard on navigation-equipped HS vehicles is XM® Sports and Stocks, a new service that is included with an XM satellite radio subscription. XM Sports provides game results and schedules for up to five personally selected national league sports teams. Drivers can add their desired teams to the navigation system and receive available team information by Voice Command or by using the haptic mouse controller. XM Stocks provides data for up to 10 personally selected stocks. After inputting their chosen stock symbols, drivers can receive available data via the navigation system or by Voice Command. Another driver-inspired development is an optional Heads-Up Display (HUD). The system projects a miniature display on a small portion of the windshield in front of the driver, significantly reducing eye movement to see frequently viewed information such as vehicle speed. The display has been developed for maximum visibility, with crisp, high-contrast white lighting that makes it possible to see even in difficult lighting conditions such as driving on snow-covered roads. In addition to speed, the system also displays turn-by-turn navigation arrows and drive-assist warnings, as well as audio information and Touch Tracer (sensors on steering-wheel switches will show an image of switch layout in the HUD), both of which can be turned off separately from the rest of the display.

2010 Lexus HS 250h – Hi-res. Images

2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h
2010 Lexus HS 250h


The high-visibility, electro-luminescent instrument cluster offers fresh methods of keeping track of the various systems in the car and helps the driver to conserve fuel. A hybrid system indicator displays the hybrid system output and regenerative charging status, simultaneously indicating the efficiency of the system related to driving style. An auxiliary eco driving indicator light further assists the driver in maintaining the most economical use of system power. In practice, the added driver awareness has been shown to improve fuel economy several percentage points.

A multi-information display resides in the center of the hybrid system indicator. It uses high-contrast organic light-emitting diode (OLED) technology for maximum visibility and indicates various conditions such as fuel consumption, ambient temperature and cruising range. Additionally, several vehicle functions can be customized through use of the display with the multi-information switch.

Like most Lexus products, the HS 250h comes equipped with a rear-view camera as part of the available navigation system. However, the new HS adds an available Wide-view Front Monitor to enhance the driver’s ability to see in the traditionally blind areas around the front of the vehicle. The front grille-mounted camera has a maximum 190-degree lateral field of view and allows the driver to see as close as approximately 23.5 inches in front of the car within an 83-degree vertical field of view.

Images from the two monitors feed into the available park assist ECU which process and sends them to the navigation system display at separate times depending on whether the vehicles is moving forward or backward. The front monitor operates in either of two modes: Normal mode allows the driver to manually operate the camera with a switch on the lower left dash area. In auto mode, images from the front monitor automatically display when the vehicle slows to about six mph or less and automatically shuts off when speed rises above approximately 7.5 mph. The driver can also toggle the front monitor on or off while in the auto mode.

Two more items related to visibility merit mention: Over the years, changes to body structural requirements for safety have made it difficult to keep A-pillars slender, affecting the driver’s field of vision. But HS 250h designers were able to create a relatively slim A-pillar structure that improves visibility without degrading structural integrity. Additionally, the HS uses side glass with a water-repellant coating that improves wet weather visibility and aids defrosting performance.

2010 Lexus HS 250h Overview Part I: Engine, Aerodynamics, Fuel Economy
2010 Lexus HS 250h Overview Part III: Design
2010 Lexus HS 250h Overview Part IV: Comfort and Convenience
2010 Lexus HS 250h Overview Part V: Safety

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