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2009 Lexus GS 460

Lexus GS Sedans Offer Customers Four Performance Model Choices for 2009

2009 Lexus GS 460
The 2009 Lexus GS luxury sport sedan model line includes the V6-powered GS 350 and the GS 350 all-wheel drive (AWD), the V8-powered GS 460, and the only gasoline electric hybrid model in the segment, the GS 450h.2009 Lexus GS 460
Engine/Transmission/Drivetrain/Performance
Optimized for low internal friction, the GS 350's 3.5-liter V6 engine produces 303 horsepower at 6,200 rpm and 274 lb.-ft. of peak torque at 3,600 rpm. A direct fuel-injection system provides much finer fuel-mixture control to improve both power and fuel efficiency. Dual Variable Valve Timing with intelligence (VVT-i) acts on both intake and exhaust valves to further enhance performance through a wide rpm range. A smooth-shifting six-speed transmission allows manual shifting when desired.

2009 Lexus GS 460
The GS 460's V8 produces 342 horsepower at 6,400 rpm and 339 lb.-ft. of peak torque at 4,100 rpm. The GS 460, like the GS 350, meets the EPA's Últra Low Emission Vehicle (ÚLEV-II) certification. Lexus has been setting standards for powertrain smoothness since its inception, and the GS 460's V8 and eight-speed automatic transmission continue that tradition. The transmission, as the six-speed automatic in the GS 350 models, allows manual shifting for a more engaging driving experience, and to maximize performance in certain driving situations. The GS 460 can accelerate from zero to 60 mph in 5.4 seconds, the GS 350 in 5.7 (5.8 for AWD).


2009 Lexus GS 460Chassis/Body/Suspension/Tires/Brakes
The Lexus GS combines proven chassis systems with advanced dynamic handling technology to provide both agile handling and the Lexus trademark smooth ride. The double-wishbone front suspension and multilink rear suspension virtually eliminate unwanted wheel-angle changes during suspension movement. The result is a natural, confident feel that's also spirited. A 34.1-ft. turning circle (35.4 ft. for GS 350 AWD) is comparable to that of smaller cars and helps make the GS highly maneuverable.

In all GS models, Brake Assist (BA), Electronic Brake-force Distribution (EBD) and the Anti-lock Braking System (ABS) help form a powerful safety front. EBD optimizes brake pressure at each wheel to help minimize body dive or sway during hard braking and cornering. Brake Assist is designed to determine if the driver is attempting emergency braking, and, if the driver has not stepped firmly enough on the brake pedal to activate the ABS, it will apply maximum braking force until pedal pressure is released.

Aluminum-alloy 18-inch wheels are standard on the GS 460 and available for the rear-wheel-drive GS 350, which features standard 17-inch wheels. For maximum handling capability, the GS 350 comes standard with 225/50R17 W-rated summer tires. The all-season 17-inch run-flat tires that are standard on the GS 350 AWD model are available on the GS 350 RWD. The GS 460 is equipped with 245/40R18 Z-rated summer tires or available all-season run-flats.


The GS 350's available all-wheel-drive system helps to enhance handling in diverse driving conditions. A planetary-gear center differential and a wet-type multi-disc clutch control front-to-rear power distribution. The system normally sends 70 percent of available power to the rear wheels to provide the traditional performance advantages of a rear-drive car and will vary the torque-split ratio from 30:70 to 50:50 in response to driving conditions and driver input. The AWD system's electronic-control strategy takes inputs such as steering and throttle angle from driver activity combined with vehicle signals from wheel speed and yaw rate sensors.

An Adaptive Variable Suspension (AVS) system, standard on the GS 460 and available on the GS 350, provides four settings, including 'sport' for tighter, more precise control. AVS can automatically select appropriate suspension damping for driving conditions. The GS 460 also offers the advanced Active Power Stabilizer system that reduces body sway and enhances vehicle control during cornering. An Electronic Control Únit (ECÚ) calculates the force needed to counter excess body sway, which is then applied to the stabilizer bars by the front and rear actuators. The GS 350 models are equipped with Vehicle Stability Control (VSC) with traction control. The system can be disengaged with the 'Trac Off' switch when the situation warrants doing so.

In the GS 460, the Lexus Vehicle Dynamics Integrated Management (VDIM) system integrates and manages a host of handling technologies, including VSC. Combining input from a variety of sensors, VDIM is designed to anticipate the onset of a vehicle skid or slide and then help correct the situation with a combination of braking, throttle, and steering control. VDIM integration helps to provide precise management for the Electronically Controlled Brakes (ECB), Variable Gear Ratio Steering (VGRS), Electric Power Steering (EPS), Vehicle Stability Control (VSC), Anti-lock Braking System (ABS), Brake Assist (BA), Electronic Brake-force Distribution (EBD), and engine torque via the electronically controlled throttle.

Electric Power Steering (EPS) in the GS 460 provides precise electric power assist using a DC motor built into the steering gear housing. Also in the GS 460, Variable Gear Ratio Steering (VGRS) can vary the steering from 2.7 turns lock-to-lock for low-speed maneuverability to a slower 3.2 turns lock-to-lock for highway-speed stability. VGRS also provides differential steering control, which helps correct for a delay in steering response -- something that occurs in all vehicles -- to help enhance driving feel during lane changes and other transitional maneuvers.

2009 Lexus GS 460The GS 460's Electronically Controlled Brakes (ECB) is a brake-by-wire system. ECB translates brake pedal pressure into electric signals that, via computer control, help provide precise and optimized braking. Electronic control provides quick brake response when needed, helping the GS 460's VDIM system to anticipate and help correct skids before they occur. The ECB system is backed by conventional hydraulic brake control in the unlikely event of electronic failure.

Safety/Security Features
The Adaptive Front lighting System (AFS), standard on the GS 460 and optional for the GS 350, helps illuminate a curve as the driver steers into it. A Tire Pressure Monitoring system can detect a critical loss in pressure in one or more tires and alert the driver. The available Intuitive Park Assist (IPA) system uses ultrasonic sensors to detect objects close to the car's front and rear bumpers and alerts the driver accordingly. A steering-input sensor helps to better judge changes in distance to objects.

The Supplemental Restraint System (SRS) in the GS sedans includes variable-force front airbags for both the driver and front passenger. The GS features standard seat-mounted side airbags for the front seats, knee airbags for the driver and front passenger, and front and rear side-curtain airbags.

The rear back-up camera, available in conjunction with the optional navigation system, automatically projects an image of what its lens can detect behind the vehicle onto the navigation screen when the vehicle is in reverse gear.

The optional Pre-Collision System (PCS) in the GS models can help the driver avoid an accident. A millimeter-wave radar sensor helps detect obstacles in front of the car, while vehicle speed, steering angle and yaw-rate inputs help to determine whether a collision is unavoidable. In such a situation, PCS switches the Adaptive Variable-air Suspension to sport mode for optimal chassis response, preemptively retracts front seat belts, and pre-initializes Brake Assist so that increased braking will be applied the instant the driver depresses the pedal. The active-braking feature will automatically apply the brakes up to a deceleration rate of 0.3 g if the driver fails to react to system warnings.

Luxury/Comfort/Convenience
The standard Regency leather-trimmed, heated, 10-way power front seats (perforated leather trim on GS 460) are comfortably contoured for support on long trips. Ventilated front seats are standard for the GS 460 and available for the GS 350. A power-tilt and telescopic steering wheel helps ensure a comfortable driving position. The standard dual-zone climate-control system filters the air, and a standard rear power sunshade adds to passenger comfort on warm days.

All four windows offer one-touch up-and-down operation with jam protection. Both electrochromic auto-dimming side mirrors are power-retractable and feature automatic tilt-down to aid in parking when reverse gear is selected. A power trunk closer provides an added convenience on this extremely well equipped car.

The standard Lexus audio system features an AM/FM/cassette stereo and a 6-disc, in-dash CD changer. The system plays through 10 premium speakers while an Automatic Sound Levelizer (ASL) maintains consistent sound levels at varying vehicle speeds.

Luxury Options
Within the ultra-quiet Lexus GS interior, all styles of music come to life with the optional Mark Levinson® Premium Sound system. Featuring 11 channels of amplification with a total of 330 watts playing through 14 speakers, the system allows users to play both CDs and DVDs. DVD movies can be viewed on the color seven-inch touch screen when the parking brake is engaged.

The optional Lexus DVD Navigation System allows the driver to enter a destination by voice command. Visual support is greatly enhanced with a central screen featuring a high-resolution 800 x 480 pixel display in 32,000 colors. On-screen details are crisp and clean, and maps and roads are highlighted by 3-D shadow effects. Text display options include English, Spanish and French.

The DVD map database contains more than five million Points of Interest (POI). The database for Chicago, Detroit, Los Angeles, and New York includes a building footprint-display feature that can show graphic representations of buildings and structures to help the driver identify surroundings. System functions include multiple route calculations, route preview, simplified highway junction graphics, and a dual-map screen mode. Bluetooth® wireless technology integrates with the navigation system to allow the driver to make hands-free phone calls via its touch-screen control panel. Personal phone books can be transferred via Bluetooth, as well.

Exterior Design
The current generation GS sedans introduced the brand's L-finesse design language. A 112.2-inch wheelbase, long hood, pulled-back cabin and short rear deck create a confident, powerful stance for the GS. A sloped, vertical grille surrounded by four independent headlamps visually connects the current GS sedans with the previous-generation models while signaling the brand's design progression. The lower valance features integrated fog lamps, and a low 0.27 coefficient of drag (Cd) helps to minimize wind noise and maximize highway fuel efficiency.

Interior Design
Últra-premium wood, polished-metal accents and leather trim endow the GS interior with a lavish yet high-precision feel. Touch points convey quality and controls that respond fluidly. The customer can choose from among three interior leather color combinations: Light Gray leather with Dark Gray Bird's-eye maple wood trim, Cashmere leather with Golden Bird's-eye Maple wood trim, or Black leather with Red Walnut wood trim. Each combination includes a matching wood and leather-trim steering wheel and shift knob.

Lexus designers strive to keep controls simple and intuitive, avoiding needless complexity. The SmartAccess keyless entry and push-to-start ignition allow the driver to keep the access fob in a pocket or purse. Audio and climate-control systems are easy to understand and operate. The unique instrument panel lighting system relies on variable-transparency glass to minimize reflections from the gauge faces and to help optimize visibility in all lighting conditions.

Warranty
All new Lexus vehicles come with a 48-month/50,000-mile basic limited warranty with roadside assistance for 48-months/unlimited miles. Powertrain and restraint system coverage is provided for 72 months/70,000 miles. Corrosion perforation protection is covered for 72 months, regardless of mileage.

Source - Lexus

Lexus Safety Feature Summary

2009 Lexus GS 460
Supplemental Restraint Systems (SRS)
Lexus engineers its vehicles with advanced passive safety technology, grounded in a body structure equipped with front and rear crumple zones. Lexus models are equipped with pretensioners and force limiters on the front seatbelts, and most models feature them on the rear outboard seatbelts, as well.2009 Lexus GS 460
Lexus models are equipped with advanced deployment front airbags, front seat-mounted side airbags and curtain side airbags for all seating rows. The advanced dual-stage front airbags are designed to deploy at one of two speeds, according to impact force. The driver's front airbag also includes an extra low stage designed to deploy based, in part, on the seat's position on its track. Lexus luxury utility vehicles are equipped with a roll-sensing side curtain airbags that deploy if a certain tip-up threshold is detected.

2009 Lexus GS 460
The IS, ES 350and LS models were the first vehicles in the world to use a new singleinflator, twin-chamber passenger front airbag. The twin-chamber design absorbs impact energy from the passenger by the two chambers spreading apart, rather than the passenger bluntly contacting the inflated bag. The new airbag design allows for greater shoulder area contact and reduced facial contact and can potentially reduce airbag-related injuries in a collision.


2009 Lexus GS 460Advanced Braking Systems
All Lexus models come equipped with four-channel, four-sensor anti-lock brakes (ABS) with Electronic Brake-force Distribution (EBD). ABS can help maintain steering control during emergency braking maneuvers. In the LX 570 and GX 470 luxury utility vehicles, ABS operates even in low-range four-wheel drive. Sensors monitor road conditions according to changes in wheel speed. Such responsiveness helps the driver maintain control while traversing hilly, unpaved terrain.

All Lexus models are equipped with Electronic Brake force Distribution (EBD), which helps to optimize brake pressure at each wheel, especially during braking while cornering. Brake Assist, also standard on all Lexus models, is designed to determine if the driver is attempting emergency braking and, if the driver has not stepped firmly enough on the brake pedal to engage the ABS, Brake Assist applies increased braking pressure until the brake pedal is released.

Vehicle Dynamics Integrated Management (VDIM) For 2009, the Lexus IS 250 joins the list of Lexus models equipped with the advanced Vehicle Dynamics Integrated Management (VDIM) system. Others already equipped with VDIM are all LS models, the GS 460 and GS 450h models, the IS 350, IS F and RX 400h. Vehicle Stability Control (VSC), which also incorporates Traction Control (TRAC), is a part of the VDIM system and is used on the ES 350, GS 350, SC 430, RX 350, GX 470 and LX 570 models). VSC helps the driver keep the vehicle going on its intended course. It detects front and rear-wheel slide and attempts to control either condition using throttle intervention and/or by braking individual wheels.


VDIM integrates and manages a host of handling technologies more quickly than other dynamic handling technologies. An important component of VDIM is the Electronically Controlled Brakes (ECB), a 'brake-by-wire' system (except in IS 250, IS 350, IS F and GS 350). ECB translates brake pedal pressure into electric signals that, via computer control, help provide precise and optimized braking in virtually any traction condition. Electronic control provides quick brake response when needed, helping the VDIM system to anticipate and help correct slides before they might occur. The ECB system is backed by conventional hydraulic brake control in case of the unlikely event of electronic failure.

VDIM integration strategy provides precise control for the ECB, Electric Power Steering (EPS), Vehicle Stability Control (VSC), ABS, Brake Assist (BA), Electronic Brake-force Distribution (EBD) and engine torque via the electronically controlled throttle. On the LS 460 L, LS 600h L, GS 460 and GS 450h models, VDIM also influences Variable Gear Ratio Steering (VGRS) to affect minor steering corrections when needed.

In the IS F model, VDIM is specially calibrated to account for the demands of highperformance track driving. Úsing a dashboard switch, the driver can select Normal, Sport or Snow driving modes. In Sport mode, VDIM allows higher dynamic thresholds before intervening and alters steering assist to increase steering feel. Sport mode enables optimal vehicle control on a track in areas where the skills of even top-level drivers are challenged.
Also in the IS F models, VDIM provides an electronically controlled brake-based limited slip differential effect on the rear wheels. During cornering, VDIM suppresses any tendency for the inside wheel to spin, transmitting more power to the outside wheel to maintain traction and momentum. The experienced driver can disengage VSC/TRAC by pressing and holding the TRAC-off button for more than three seconds.

Seeing into Curves
The Adaptive Front lighting System (AFS), which helps illuminate a turn or curve as the driver steers into it, is standard on the LS models, GS 460 and GS 450h, IS F, LX 570 and SC 430 models. It is available as an option on the GS 350, IS sedans and RX models. The ES 350, LX 570 and LS models feature a dual-swivel version of AFS. In this version of AFS, a medium-to-high speed mode allows the right and left front headlamp bulbs to both swivel toward the direction of the turn at the same time, enhancing system effectiveness. In the first-generation AFS system, only the bulb on the side of the turn direction swivels toward the turn.

2009 Lexus GS 460On the first-generation AFS, a central controller calculates the optimum lighting direction based on input from vehicle speed and steering angle and swivels the right and left headlights independently. The left beam can rotate from zero to 15 degrees in a left turn while the right beam remains in the center position. The right beam can rotate from zero to five degrees in a right turn while the left beam remains in a center position. The AFS headlamps have a selfleveling feature, similar to HID headlights. An AFS on/off switch allows the driver to disengage the system at any time.

For the dual-swivel AFS, in a left turn the left beam can rotate from zero to 15 degrees (nine for the LX 570 and 20 for the LS 460), while the right beam rotates from zero to 7.5 degrees (LS models and ES 350) or zero to nine degrees (LX 570). In a right turn, the right beam can rotate from zero to 10 degrees (four for the LX 570), while the left beam rotates from zero to five degrees (four for the LX 570).

Dynamic Radar Cruise Control and Pre-Collision System
All Lexus sedans and the LX 570 offer the Pre-Collision System (PCS), which integrates the Dynamic Radar Cruise Control system. A millimeter-wave radar sensor helps detect obstacles in front of the car, while vehicle speed, steering angle and yaw-rate inputs help to determine whether a collision is unavoidable.

In such a situation, PCS preemptively retracts front seat belts and pre-initializes Brake Assist so that increased braking will be applied the instant the driver depresses the pedal. The active braking feature will automatically apply the brakes up to a deceleration rate of 0.3 g if the driver fails to react to system warnings. On models equipped with Adaptive Variable air Suspension (AVS), the AVS system adjusts to firmer settings for optimal chassis response when PCS is activated.

The Dynamic Radar Cruise Control sensors use radar technology to help maintain a preset following distance from the car traveling in front. If the vehicle gets too close, the throttle is automatically reduced and brakes are applied. Once the road clears, the vehicle returns to its preset speed.

On the Pebble Beach® Edition LS 600h L, the Advanced Pre-Collision System (APCS) is the industry's first such system designed to help detect pedestrians in the vehicle's path. Úsing two small cameras mounted at the front of the car that work in conjunction with millimeter-wave radar, APCS is sensitive enough to detect certain nonmetallic objects.

The APCS option also integrates a Driver Monitor System first introduced to the world by Lexus. A camera mounted on the steering column monitors the orientation of the driver's face. If the camera detects that the driver is not looking directly ahead for a few seconds or more, and if an obstacle is detected ahead, the system alerts the driver first with warning beeping and a flashing light. As the car closes on the obstacle, if the driver does not react, APCS can begin to gently apply the vehicle's brakes.

To assist the driver in maneuvering around the obstacle, APCS adjusts the steering ratio to quicken the degree and speed of steering response. Simultaneously, in anticipation of a potential impact, the system automatically retracts the front seatbelts and prepares the brake assist system to respond with full power when the driver applies the brake pedal.

Dynamic Laser Cruise Control
The RX 350 and RX 400h offer available Dynamic Laser Cruise Control. This system uses lasers to collect data from scanning points ahead and is designed to help the driver automatically maintain a set distance from the vehicle traveling in front.

Source - Lexus

Related Reading : Lexus GS History

Designed to fill the gap between the ES and LS, the Lexus GS was introduced by Toyotas luxury department, Lexus, in October of 1991. Also called the Toyota Aristo, the GS was a series of mid-size luxury sports sedans that were styled by the famous Italdesigns Giurgiaro firm. Based on the platform and running gear of the Toyota Crown, the original GS was first introduced in Japan in 1991 and two years....
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