display Lexus GS450h 2014 Workshop Manual

214
GS450h_OM_OM30D52U_(U)
4-2. Driving procedures
Brake Hold
Turns the brake hold system on
The brake hold standby indicator
(green) comes on. While the system is
holding the brake, the brake hold
operated indicator (yellow) comes on.
■Brake hold system operating conditions
The brake hold system cannot be turned on in the following conditions:
●The trunk or hood is not closed.
●The driver’s door is not closed.
●The driver is not wearing the seat belt.
If any of the conditions above are detected when the brake hold system is enabled,
the system will turn off and the brake hold standby indicator light will go off. In addi-
tion, if any of the conditions are detected while the system is holding the brake, a
warning buzzer will sound and a message will be shown on the multi-information dis-
play. The parking brake will then be set automatically.
■Brake hold function
●If the brake pedal is left released for a period of about 3 minutes after the system
has started holding the brake, the parking brake will be set automatically. In this
case, a warning buzzer sounds and a message is shown on the multi-information
display.
●To turn the system off while the system is holding the brake, firmly depress the
brake pedal and press the button again.
●The brake hold function may not hold the vehicle when the vehicle is on a steep
incline. In this situation, it may be necessary for the driver to apply the brakes. The
multi-information display will inform the driver of this situation.
The brake hold system keeps the brak e applied when the shift lever is in
D, S or N with the system on and the brake pedal has been depressed to
stop the vehicle. The system releases the brake when the accelerator
pedal is depressed with the shift lever in D or S to allow smooth start off.
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4-5. Using the driving support systems
Dynamic radar cruise control∗
Dynamic radar cruise control supplements conventional cruise control
with a vehicle-to-vehicle distance control. In vehicle-to-vehicle distance
control mode, the vehicle automatically accelerates or decelerates in
order to maintain a set following distance from vehicles ahead. Vehicle-to-vehicle distance but-
ton
Display
Set speed
Indicators
Cruise control switch
∗
: If equipped
Summary of functions
1
2
3
4
5
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GS450h_OM_OM30D52U_(U)
2414-5. Using the driving support systems
4
Driving
Press the “ON/OFF” button to
activate the cruise control.
Radar cruise control indicator will
come on.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the
vehicle to the desired speed, and
push the lever down to set the
speed.
“SET” indicator will be displayed.
The vehicle speed at the moment the
lever is released becomes the set
speed.
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
1
2
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4-5. Using the driving support systems
To change the set speed, operate the lever until the desired set speed is
displayed.Increases the speed
Decreases the speed
Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever in
the desired direction.
In the vehicle-to-vehicle distance control mode, the set speed will be increased or
decreased as follows:• When the set speed is shown in “MPH”
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is
operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75 seconds
the lever is held
• When the set speed is shown in “km/h”
Fine adjustment: By approximately 0.6 mph (1 km/h) each time the lever is
operated
Large adjustment: By approximately 3.1 mph (5 km/h) for each 0.75 seconds
the lever is held
In the constant speed control mode ( →P. 247), the set speed will be increased or
decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is oper-
ated
Large adjustment: The set speed can be increased or decreased continually until
the lever is released.
Adjusting the set speed
1
2
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GS450h_OM_OM30D52U_(U)
2434-5. Using the driving support systems
4
Driving
Pressing the button changes the
vehicle-to-vehicle distance as fol-
lows:Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to long mode when the
power switch is turned to ON mode.
If a vehicle is running ahead of you, the
preceding vehicle mark will also be
displayed.
Select a distance from the table below. Note that the distances shown cor-
respond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle dis-
tance increases/decreases in accordance with vehicle speed.
Changing the vehicle-to-vehicle distance
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
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4-5. Using the driving support systems
Example of follow-up cruising
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the speed
of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the
driver.
Example of acceleration
When there are no longer any vehicles ahead driving slower than the
set speed
The system accelerates until the set speed is reached. The system then returns to
constant speed cruising.
When your vehicle is too close to a vehicle ahead, and sufficient auto-
matic deceleration via the cruise control is not possible, the display will
flash and the buzzer will sound to alert the driver. An example of this
would be if another driver cuts in front of you while you are following a
vehicle. Apply the brakes to ensure an appropriate vehicle-to-vehicle dis-
tance.
■Warnings may not occur when
In the following instances, there is a possibility that the warnings will not
occur:
●When the speed of the vehicle ahead matches or exceeds your vehi-
cle speed
●When the vehicle ahead is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●At the instant the accelerator is applied
Ap proach warni ng
3
4
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GS450h_OM_OM30D52U_(U)4-5. Using the driving support systems
4
Driving
Dynamic radar cruise control with full-speed
range
∗
Dynamic radar cruise control with full-speed range supplements conven-
tional cruise control with a vehicle-to-vehicle distance control. In vehicle-
to-vehicle distance control mode, the vehicle automatically accelerates,
decelerates or stops in order to maintain a set following distance from
vehicles ahead. See cautions on P. 267 Vehicle-to-vehicle distance but-
ton
Display
Set speed
Indicators
Cruise control switch
∗
: If equipped
Summary of functions
1
2
3
4
5
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4-5. Using the driving support systems
Press the “ON/OFF” button to
activate the cruise control.
Radar cruise control indicator will
come on.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the
vehicle to the desired speed, and
push the lever down to set the
speed.
“SET” indicator will be displayed.
The vehicle speed at the moment the
lever is released becomes the set
speed.
While the vehicle is in vehicle-to-vehi-
cle distance control mode, if the lever
is released when vehicle speed is less
than 30 mph (50 km/h) and a vehicle
ahead can be detected, the vehicle
will start following the vehicle ahead at
a set speed of 30 mph (50 km/h).
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
1
2
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2574-5. Using the driving support systems
4
Driving
To change the set speed, operate the lever until the desired set speed is
displayed.Increases the speed
(Except when the vehicle has been
stopped by system control in vehicle-
to-vehicle distance control mode)
Decreases the speed
Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever in
the desired direction.
In the vehicle-to-vehicle distance control mode, the set speed will be increased or
decreased as follows:• When the set speed is shown in “MPH”
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is
operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75 seconds
the lever is held
• When the set speed is shown in “km/h”
Fine adjustment: By approximately 0.6 mph (1 km/h) each time the lever is
operated
Large adjustment: By approximately 3.1 mph (5 km/h) for each 0.75 seconds
the lever is held
In the constant speed control mode ( →P. 263), the set speed will be increased or
decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is oper-
ated
Large adjustment: The set speed can be increased or decreased continually until
the lever is released.
Adjusting the set speed
1
2
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4-5. Using the driving support systems
Pressing the button changes the
vehicle-to-vehicle distance as fol-
lows:Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to long mode when the
power switch is turned to ON mode.
If a vehicle is running ahead of you, the
preceding vehicle mark will also be
displayed.
Select a distance from the table below. Note that the distances shown cor-
respond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle dis-
tance increases/decreases in accordance with vehicle speed. When the
vehicle is stopped by system control, the vehicle-to-vehicle distance will
be about 10 ft. (3 m) to 16 ft. (5 m) re gardless of the vehicle-to-vehicle dis-
tance setting.
Changing the vehicle-to-vehicle distance
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
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