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4
4-5. Using the driving support systems
Driving
When the Dynamic Radar Cruise
Control with Road Sign Assist is oper-
ating, while driving down a hill, the
vehicle speed may exceed the set
speed.
In this case, the displayed set vehicle
speed will be highlighted and a buzzer
will sound to alert the driver.
Q Dynamic radar cruise control with full-
speed range can be set when
O The shift lever is in D.
O The desired set speed can be set when
the vehicle speed is approximately 30
km/h (20 mph) or more. (However,
when the vehicle speed is set while driv-
ing at below approximately 30 km/h [20
mph], the set speed will be set to approxi-
mately 30 km/h [20 mph].)
Q Accelerating after setting the vehicle
speed
The vehicle can accelerate by operating the
accelerator pedal. After accelerating, the
set speed resumes. However, during vehi-
cle-to-vehicle distance control mode, the
vehicle speed may decrease below the set
speed in order to maintain the distance to
the preceding vehicle.
Q When the vehicle stops while follow-up
cruising
O Pressing the “+RES” switch while the
vehicle ahead stops will resume follow-
up cruising if the vehicle ahead starts off
within approximately 3 seconds after the
switch is pressed.
O If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up
cruising will be resumed.
Q Automatic cancelation of vehicle-to-
vehicle distance control mode
Vehicle-to-vehicle distance control mode is
automatically canceled in the following situ-
ations.
O VSC is activated.
O TRC is activated for a period of time.
O When the VSC or TRC system is turned
off.
O The sensor cannot detect correctly
because it is covered in some way.
O When the brake control or output
restriction control of a driving support
system operates. (For example: Pre-Col-
lision System, Drive-Start Control)
O The parking brake is operated.
O The vehicle is stopped by system control
on a steep incline.
O The following are detected when the
vehicle has been stopped by system con-
trol:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for about 3
minutes
If vehicle-to-vehicle distance control mode
is automatically canceled for any reasons
other than the above, there may be a mal-
function in the system. Contact any autho-
rized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
Q Automatic cancelation of constant
speed control mode
Constant speed control mode is automati-
cally canceled in the following situations:
O Actual vehicle speed is more than
approximately 16 km/h (10 mph) below
the set vehicle speed.
O Actual vehicle speed falls below approxi-
mately 30 km/h (20 mph).
O VSC is activated.
O TRC is activated for a period of time.
O When the VSC or TRC system is turned
off.
O When the brake control or output
restriction control of a driving support
system operates. (For example: Pre-Col-
lision System, Drive-Start Control)
O The parking brake is operated.
If constant speed control mode is automati-
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