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268
4-5. Using the driving support systems
■
Dynamic radar cruise control can be set when
The shift lever is in the D or the range 4, 5 or 6 of S has been selected.
●
Vehicle speed is above approximately 30 mph (50 km/h).
●
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Accelerating after setting the vehicle speed
The vehicle can accelerate normally. After acceleration, the set speed
resumes. However, during vehicle-to-vehicle distance control mode, the vehi-
cle speed may decrease below the set speed in order to maintain the dis-
tance to the vehicle ahead.
■
Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the fol-
lowing situations:
Actual vehicle speed falls below approximately 25 mph (40 km/h).
●
VSC is activated.
●
The sensor cannot operate correctly because it is covered in some way.
●
The windshield wipers are operating at high speed (when the wiper switch is
●
set to the "AUTO" mode or the high speed wiper operation position).
If vehicle-to-vehicle distance control driving is automatically canceled for any
other reason, there may be a malfunction in the system. Contact your Toyota
dealer.
■
Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situ-
ations.
Actual vehicle speed is more than approximately 10 mph (16 km/h) below
●
the set vehicle speed.
At this time, the memorized set speed is not retained.
Vehicle speed falls below approximately 25 mph (40 km/h).
●
VSC is activated.
●
■
Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to-
vehicle distance control operates properly. (Some obstructions, such as
snow, ice and plastic objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
Grille cover
1
Radar sensor
2
SIENNA_OM_01999-08001_(U)
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Table of Contents
Troubleshooting
