Lexus ES 250 Owner's Manual page 247

246
4-5. Using the driving support systems
km/h (20 mph) or more. (However, when
the vehicle speed is set while driving at
below approximately 30 km/h [20 mph],
the set speed will be set to approximately
30 km/h [20 mph].)
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.
When the vehicle stops while follow-up
■
cruising
Pressing the +RES switch while the vehi-
●
cle ahead stops will resume follow-up
cruising if the vehicle ahead starts off
within approximately 3 seconds after the
switch is pressed.
● If the vehicle ahead starts off within 3 sec-
onds after your vehicle stops, follow-up
cruising will be resumed.
Automatic cancelation of vehicle-to-
■
vehicle distance control mode
Vehicle-to-vehicle distance control mode is
automatically canceled in the following situ-
ations.
● VSC is activated.
TRC is activated for a period of time.
●
● When the VSC or TRC system is turned
off.
The sensor cannot detect correctly
●
because it is covered in some way.
Pre-collision braking is activated.
●
● The parking brake is operated.
The vehicle is stopped by system control
●
on a steep incline.
● 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 your Lexus
dealer.
Automatic cancelation of constant
■
speed control mode
Constant speed control mode is automati-
cally canceled in the following situations:
● Actual vehicle speed is more than
approximately 16 km/h (10 mph) below
the set vehicle speed.
Actual vehicle speed falls below approxi-
●
mately 30 km/h (20 mph).
● VSC is activated.
TRC is activated for a period of time.
●
When the VSC or TRC system is turned
●
off.
● Pre-collision braking is activated.
If constant speed control mode is automati-
cally canceled for any reasons other than
the above, there may be a malfunction in the
system. Contact your Lexus dealer.
Brake operation
■
A brake operation sound may be heard and
the brake pedal response may change, but
these are not malfunctions.
Warning messages and buzzers for
■
dynamic radar cruise control with full-
speed range
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution while driv-
ing. If a warning message is shown on the
multi-information display, read the message
and follow the instructions. (P.212, 441)
When the sensor may not be correctly
■
detecting the vehicle ahead
In the case of the following and depending
on the conditions, operate the brake pedal
when deceleration of the system is insuffi-
cient or operate the accelerator pedal
when acceleration is required.
As the sensor may not be able to correctly