2013 TOYOTA PRIUS warning

283
2-4. Using other
driving systems
PRIUS_OM_OM47791U_(U)
2
When driving
■Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-t\
o-
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 (vehicle-to-vehicle distance control mode) will
be canceled if dirt is detected. (Constant speed control mode can be used).
■ Warning lights, messages and buzzers for dynamic radar cruise con-
trol
Warning lights, warning messages and buzzers are used to indicate a sys-
tem malfunction or to inform the driver of the need for caution while driving.
Grille cover
Radar sensor

284 2-4. Using other driving systems
PRIUS_OM_OM47791U_(U)
■Certification
For vehicles sold in the U.S.A.
FCC ID: HYQDNMWR004
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
This equipment should be installed and operated with minimum distance of
20 cm between the radiator (antenna) and your body.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, includ-
ing interference that may cause undesired operation of the device.

286 2-4. Using other driving systems
PRIUS_OM_OM47791U_(U)
CAUTION
■To avoid inadvertent cruise control activation
Switch the cruise control off using the “ON-OFF” button when not in use.
■ Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an acci-
dent resulting in death or serious injury.
● In heavy traffic
● On roads with sharp bends
● On winding roads
● On slippery roads, such as those covered with rain, ice or snow
● On steep downhills, or where there are sudden changes between sharp up
and down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
● At entrances to expressways
● When weather conditions are bad enough that they may prevent the sen-
sors from functioning correctly (fog, snow, sandstorm, heavy rain, etc.)
● When an approach warning buzzer is heard often
● During emergency towing

287
2-4. Using other
driving systems
PRIUS_OM_OM47791U_(U)
2
When driving
CAUTION
■When the sensor may not be corr ectly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles
are in front of you.
As the sensor may not be able to correctly detect these types of vehicles,
the approach warning ( P. 279) will not be activated, and a fatal or serious
accident may result.
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving
● Vehicles with small rear ends (trailers with no load on board etc.)
● Motorcycles traveling in the same lane
■ Conditions under which the vehicle -to-vehicle distance control may
not function correctly
Apply the brakes as necessary in the following conditions as the radar sen-
sor may not be able to correctly detect vehicles ahead, and a fatal or serious
accident may result:
● When water or snow thrown up by the surrounding vehicles hinders the
functioning of the sensor
● When your vehicle is pointing upwards (caused by a heavy load in the lug-
gage compartment etc.)
● When the road curves or when the lanes are narrow
● When steering wheel operation or your position in the lane is unstable
● When the vehicle ahead of you decelerates suddenly

290 2-4. Using other driving systems
PRIUS_OM_OM47791U_(U)
Functions included in the LKALane departure warning function
If the system judges th at the vehicle may deviate from its lane, it
alerts the driver using beeping, screen displays and a sensory
warning
* given via the steering wheel.
*: A slight steering torque is applied for a short period of time in the direc- tion of the center of the lane.
Lane keeping assist function
• This function will be active wh en the vehicle-to-vehicle distance
control mode of the cruise control ( P. 272) is set with vehicle
speed above approximately 45 mph (72 km/h) and while the
lane departure warning function is active.
• When the lane keeping assist function is active, a slight steering torque will be applied, to help the driver maintain the vehicle
inside the lane.
The lane keeping assist function will be temporarily canceled if the steer-
ing wheel is not operated, or if you continue driving with your hands
lightly touching the steering wheel. ( P. 294)

292 2-4. Using other driving systems
PRIUS_OM_OM47791U_(U)
Operating conditions for each function■ Lane departure warning function
●When the vehicle speed is a pproximately 30 mph (48 km/h) or
more
● When the lane width is more than approximately 9.1 ft. (2.8 m)
● When driving on a straight road or through a curve with a radius
of more than approximately 394 ft. (120 m)
■ Lane keeping assist function
●When the vehicle speed is between approximately 45 and 112
mph (72 and 180 km/h)
● When the vehicle-to-vehicle distance mode of the radar cruise
control is on, and the set vehicl e speed is approximately 45 mph
(72 km/h) or more (the functi on will not operate when the radar
cruise control is in set speed mode)
● When the lane width is between approximately 9.1 and 13.1 ft.
(2.8 and 4.0 m)
● When driving on a straight road or through a curve with a radius
of more than approximately 656 ft. (200 m)

293
2-4. Using other
driving systems
PRIUS_OM_OM47791U_(U)
2
When driving
Indication on the multi-information display
When the LKA system is on, the lane line display and steering wheel
display are shown. Lane keeping assist function
operation indication
Steering wheel displayed:
Indicates that the function is cur-
rently operating. (If the lane
departure warning operates at
this time, the steering wheel
flashes.)
Steering wheel not displayed:
Indicates that the function is not
currently operating. (When the
lane keeping assist function is
canceled, the buzzer will beep
twice.)
Dynamic radar cruise control
display
Lane departure warning func-
tion indication (when solid
lines are shown):
The function has recognized lane
markers. (If the lane departure
warning operates at this time, the
lines flash.)
Lane departure warning func-
tion indication (when thin lines
are shown):
A lane marker is not recognized
by the system, or the LKA system
functions are temporarily can-
celed.

294 2-4. Using other driving systems
PRIUS_OM_OM47791U_(U)
■Temporary cancelation of the LKA system functions
If any of the following occurs, the LKA system functions will be temporarily
canceled. The functions will resume after the necessary operating conditions
have returned.
● The steering wheel is turned as far as necessary to cause the vehicle to
change lanes.
● When the system detects no-handed driving. (The lane keeping assist
function will be temporarily canceled, but the lane departure warning
function will continue.)
● The turn signal lever is operated.
● The vehicle speed deviates from the operating range of the LKA system
functions. (The buzzer will beep twice when the lane keeping assist func-
tion is being canceled.)
● When the lane lines cannot be recognized while driving. (The buzzer will
beep twice when the lane keeping assist function is being canceled.)
● The wiper switch is set on high speed mode. (The lane keeping assist
function will be temporarily canceled, but the lane departure warning
function will continue.)
● If the vehicle crosses a line for approximately half a minute or more. (The
lane keeping assist function will be temporarily canceled, but the lane
departure warning function will continue.)
● When the lane departure warning function is activated.
The lane departure warning function will not operate again for a several
seconds after it has been activated, even if the vehicle leaves the lane
again.
■ The lane departure warning
It may be difficult to feel the sensory warning depending on the road condi-
tions.