2017 Lexus IS300h Owner's Manual

3454-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:
■The RCTA function is operational when
The RCTA function operates when all of the following conditions are met:
●The BSM function is on.
●The shift lever is in R.
●The vehicle speed is less than approximately 8 km/h (5 mph).
●The approaching vehicle speed is between approximately 8 km/h (5 mph) and 28 km/h (18 mph).
RCTA function detection areas
Approaching vehicleSpeedApproximate
alert distance
Fast28 km/h (18 mph)20 m (65 ft.)
Slow8 km/h (5 mph)5.5 m (18 ft.)
1

3464-5. Using the driving support systems
IS300h_EE(OM53D89E)
■Conditions under which the RCTA function will not detect a vehicle
The RCTA function is not designed to dete ct the following types of vehicles and/or objects:
●Vehicles approaching from directly behind
●Vehicles backing up in a parking space next to your vehicle
●Guardrails, walls, signs, parked vehi cles and similar stationary objects*
●Small motorcycles, bicycles, pedestrians, etc.*
●Vehicles moving away from your vehicle
●Vehicles approaching from the parking spaces next to your vehicle*
*: Depending on the conditions, detection of a vehicle and/or object may occur.
■Conditions under which the RCTA function may not function correctly
●The RCTA function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area • When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on
the rear bumper
• When driving on a road surface that is wet with standing water during bad weather,
such as heavy rain, snow, or fog • When multiple vehicles are approaching wi th only a small gap between each vehicle
• When a vehicle is approaching at high speed
• When towing a trailer (vehicles with towing package)
●Vehicles that the sensors cannot detect due to
obstructions
• When backing up on a slope with a sharp
change in grade

3474-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
●Instances of the RCTA function unnecessarily detecting a vehicle and/or object may
increase in the following situations:
• When a vehicle passes by the side of your vehicle
• When the distance between your vehicle and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may re flect electrical waves toward the rear of
the vehicle, is short
• When backing out of a shallow angle park-
ing spot
• When the sensors cannot detect a vehicle due to obstructions
• When the parking space faces a street and vehicles are being driven on the street

3484-5. Using the driving support systems
IS300h_EE(OM53D89E)
Vehicles without Adaptive Variable Suspension System
Normal mode
Provides an optimal balance of fuel ec onomy, quietness, and dynamic perfor-
mance. Suitable for city driving.
Press the switch to change the driving mode to normal mode when Eco drive mode or sport mode is selected.
Eco drive mode
Helps the driver accelerate in an eco-fr iendly manner and improve fuel econ-
omy through moderate throttle charact eristics and by controlling the opera-
tion of the air conditioning system (heating/cooling).
When not in Eco drive mode, if the driving mode select switch is turned to the left, the
Eco drive mode indicator will come on.
Sport mode
Controls the hybrid system to prov ide quick, powerful acceleration. This
mode also changes the steering feel, maki ng it suitable for when agile driving
response is desired, such as when driving on roads with many curves.
When not in sport mode and the driving mode select switch is turned to the right, the “SPORT” indicator comes on, and the hybrid system indicator changes to the
tachometer. ( P. 105)
Driving mode select switch
The driving modes can be selected to suit driving conditions.
Except F SPORT
models
F SPORT
models
1
2
3

3494-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
Vehicles with Adaptive Variable Suspension System
Normal mode/Customized mode
Normal mode and customized mode ar e selected by pressing the driving
mode select switch. Each time the switch is pressed, the driving mode
changes between normal mode and customized mode. When customized
mode is selected, the “CUSTOMIZE” indicator will be illuminated.
When Eco drive mode or sport mode is se lected, pressing the switch changes the driving mode to normal mode.
• Normal mode
Provides an optimal balance of fuel economy, quietness, and dynamic per-
formance. Suitable for city driving.
• Customized mode
Allows you to drive with the following functions set to your preferred set-
tings.
Customized mode settings can on ly be changed on the drive mode
customization display of the audio system screen.
(Displaying the drive mode customization display: P. 657)
1

3504-5. Using the driving support systems
IS300h_EE(OM53D89E)
Eco drive mode
Helps the driver accelerate in an eco-fr iendly manner and improve fuel econ-
omy through moderate throttle charact eristics and by controlling the opera-
tion of the air conditioning system (heating/cooling).
When not in Eco drive mode, if the driving mode select switch is turned to the left, the
Eco drive mode indicator will come on.
Sport mode
•SPORT S mode
Controls the hybrid system to prov ide quick, powerful acceleration. This
mode is suitable for when agile drivin g response is desired, such as when
driving on roads with many curves.
When not in sport mode and the driving mode select switch is turned to the right, the “SPORT” indicator comes on, and the hy brid system indicator changes to the
tachometer. ( P. 105)
•SPORT S+ mode
Helps to ensure steering performanc e and driving stability by simultane-
ously controlling the steering and suspension in addition to the hybrid sys-
tem. Suitable for sportier driving.
When in SPORT S mode, if the driving mode select switch is turned to the right, the “SPORT S+” indicator will come on.
FunctionSetting
Powertrain
Normal
Power
Eco
ChassisNormal
Sport
Air conditioning systemNormal
Eco
2
3

3514-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
■Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the air condi-
tioning system to enhance fuel efficiency. To improve air conditioning performance, adjust the fan speed or turn off Eco drive mode.
■Automatic deactivation of sport mode and customized mode
If the power switch is turned off after driv ing in sport mode or customized mode, the drive mode will be changed to normal mode.
■Driving mode pop-up display (veh icles with a 10.3-inch display)
When the driving mode is changed, the sele cted driving mode will be temporarily dis- played on the side display. ( P. 464)

3524-5. Using the driving support systems
IS300h_EE(OM53D89E)
◆ECB (Electronically Controlled Brake System)
The electronically controlled system generates braking force corresponding
to the brake operation
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the br akes are applied suddenly, or if the
brakes are applied while drivin g on a slippery road surface
◆Brake assist
Generates an increased level of br aking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to contro l skidding when swerving suddenly or turning on
slippery road surfaces.
◆VSC+ (Vehicle Stability Control+)
Provides cooperative control of the ABS, TRC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road sur-
faces by controlling steering performance.
◆TRC (Traction Control)
Helps to maintain drive power and pr event the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
◆Hill-start assist control
Helps to reduce the backward movement of the vehicle when starting on an
uphill
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel.
Driving assist systems
To help enhance driving safety and pe rformance, the following systems oper-
ate automatically in response to various driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too heav-
ily when operating the vehicle.