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4-5. Using the driving support systems
Driving
*2: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
●Steering assist function
This function operates when all of the
following conditions are met in addition
to the operation conditions for the lane
departure alert function.
• Vehicle is not accelerated or deceler- ated by a fixed amount or more.
• Steering wheel is not operated with a steering force level suitable for chang-ing lanes.
• ABS, VSC, TRC and PCS are not operating.• TRC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.180)
●Vehicle sway warning function
This function operates when all of the
following conditions are met.
• Setting for “Sway Warning” in of
the multi-information display is set to
“ON”. ( P.358) • Vehicle speed is approximately 50 km/h (32 mph) or more.• Width of traffic lane is approximately 3
m (9.8 ft.) or more. • No system malfunctions are detected. ( P.180)
●Lane centering function
This function operates when all of the
following conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in of the
multi-information display is set to “ON”
( P.358) • This function recognizes white (yel-
low) lane lines or the position of a pre- ceding vehicle (except when the preceding vehicle is small, such as a
motorcycle). • The dynamic radar cruise control is operating in vehicle-to-vehicle dis-
tance control mode. • Width of traffic lane is approximately 3
to 4 m (10 to 13 ft.).
• Turn signal lever is not operated. • Vehicle is not being driven around a sharp curve.
• No system malfunctions are detected. ( P.180) • Vehicle does not accelerate or decel-
erate by a fixed amount or more. • Steering wheel is not operated with a steering force level suitable for chang-
ing lanes. • ABS, VSC, TRC and PCS are not operating.
• TRC or VSC is not turned off. • Hands off steering wheel warning is not displayed. ( P.180)
• The vehicle is being driven in the cen- ter of a lane.• Steering assist function is not operat-
ing.
■Temporary cancelation of functions
●When operation conditions are no lon-
ger met, a function may be temporar- ily canceled. However, when the operation conditions are met again,
operation of the function is automati- cally restored. ( P.178)
●If the operation conditions (P.178) are no longer met while the lane cen-tering function is operating, the buzzer
may sound to indicate that the func- tion has been temporarily canceled.
■Steering assist function/lane cen-tering function
●Depending on the vehicle speed, lane departure situation, road conditions,
etc., the driver may not feel the func- tion is operating or the function may not operate at all.
●The steering control of the function is overridden by the driver’s steering
wheel operation.
●Do not attempt to test the operation of
the steering assist function.
■Lane departure alert function
●The warning buzzer may be difficult to
hear due to external noise, audio play- back, etc.
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4-5. Using the driving support systems
●If the edge of the course* is not clear
or straight, the lane departure alert function may not operate.
●Do not attempt to test the operation of the lane departure alert function.*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
■Hands off steering wheel warning
In the following situations, a warning message urging the driver to hold the steering wheel and the symbol shown in
the illustration are displayed on the multi-information display to warn the driver. The warning stops when the sys-
tem determines that the driver holds the steering wheel. Always keep your hands on the steering wheel when using this
system, regardless of warnings.
●When the system determines that the
driver is driving without holding the steering wheel while the system is operating
If the driver continues to keep their
hands off of the steering wheel, the
buzzer sounds, the driver is warned and
the function is temporarily canceled.
This warning also operates in the same
way when the driver continuously oper-
ates the steering wheel only a small
amount.
●When the system determines that the vehicle may deviate from the lane
while driving around a curve while the lane centering function is operating.
Depending on the vehicle condition and
road conditions, the warning may not
operate. Also, if the system determines
that the vehicle is driving around a
curve, warnings will occur earlier than
during straight-lane driving.
●When the system determines that the driver is driving without holding the steering wheel while the steering
wheel assist of the steering assist function is operating.
If the driver continues to keep their
hands off of the steering wheel and the
steering wheel assist is operating, the
buzzer sounds and the driver is warned.
Each time the buzzer sounds, the con-
tinuing time of the buzzer becomes lon-
ger.
■Vehicle sway warning function
When the system determines that the
vehicle is swaying while the vehicle sway warning function is operating, a buzzer sounds and a warning message
urging the driver to rest and the symbol shown in the illustration are simultane-ously displayed on the multi-information
display.
Depending on the vehicle and road con-
ditions, the warning may not operate.
■Warning message
If the following warning message is dis- played on the multi-information display
and the LTA indicator illuminates in orange, follow the appropriate trouble-shooting procedure. Also, if a different
warning message is displayed, follow the instructions displayed on the screen.
●“LTA Malfunction Visit Your Dealer”
The system may not be operating prop-
erly. Have the vehicle inspected by any
authorized Toyota retailer or Toyota
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4-5. Using the driving support systems
If vehicle-to-vehicle distance control
mode is automatically canceled for any reasons other than the above, there may be a malfunction in the system.
Contact any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer.
■Automatic cancelation of constant
speed control mode
Constant speed control mode is auto- matically canceled in the following situa-
tions:
●Actual vehicle speed is more than
approximately 16 km/h (10 mph) below the set vehicle speed.
●Actual vehicle speed falls below approximately 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.
●When the brake control or output restriction control of a driving support
system operates. (For example: Pre- Collision System, Drive-Start Control)
●Vehicles with manual transmission: When the shift lever is in N or the clutch pedal is depressed for a certain
amount of time or more.
●The parking brake is operated.
If constant speed control mode is auto- matically canceled for any reasons other than the above, there may be a malfunc-
tion in the system. Contact any autho- rized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■The Dynamic Radar Cruise Control with Road Sign Assist may not operate properly when (if
equipped)
As the Dynamic Radar Cruise Control with Road Sign Assist may not operate
properly in conditions in which RSA may not operate or detect correctly ( P.197), when using this function,
make sure to check the speed limit sign displayed.
In the following situations, the set speed
may not be changed to the recognized speed limit by pressing and holding the “+RES”/“-SET” switch.
●If speed limit information is not avail-able
●When the recognized speed limit is the same as the set speed
●When the recognized speed limit is outside of the speed range that the
dynamic radar cruise control system can operate
■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
Warning messages and buzzers are used to indicate a system malfunction or to inform the driver of the need for cau-
tion while driving. If a warning message is shown on the multi-information dis-play, read the message and follow the
instructions. ( P.159, 311)
■When the sensor may not be cor- rectly detecting the vehicle ahead
In the case of the following and depend-
ing on the conditions, operate the brake pedal when deceleration of the system is insufficient or operate the accelerator
pedal when acceleration is required.
As the sensor may not be able to cor- rectly detect these types of vehicles, the
approach warning ( P.187) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same lane
●Vehicles with small rear ends (trailers with no load on board, etc.)
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4-5. Using the driving support systems
If both the TRC and VSC systems are
turned off, automatic re-enabling will not occur when vehicle speed increases.
■Operating conditions of Active Cor-
nering Assist
The system operates when the following occurs.
●TRC/VSC can operate
●The driver is attempting to accelerate while turning
●The system detects that the vehicle is drifting to the outer side
●The brake pedal is released
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is
reduced to prevent the system from overheating when there is frequent steering input over an extended period
of time. The steering wheel may feel heavy as a result. Should this occur, refrain from excessive steering input or
stop the vehicle and turn the engine off. The EPS system should return to nor-mal within 10 minutes.
■Operating conditions of emergency
brake signal
When the following conditions are met, the emergency brake signal will oper-
ates:
●The emergency flashers are off
●Actual vehicle speed is over 55 km/h (35 mph)
●The system judges from the vehicle deceleration that it is a sudden brak-
ing operation.
■Automatic system cancelation of emergency brake signal
The emergency brake signal will be can-
celed in any of the following situations:
●The emergency flashers are turned
on.
●The system judges from the vehicle
deceleration that is not a sudden brak- ing operation.
■Secondary Collision Brake operat-
ing conditions
The system operates when the SRS air- bag sensor detects a collision while the
vehicle is in motion. However, the system does not operate when components are damaged.
■Secondary Collision Brake auto-
matic cancelation
The system is automatically canceled in any of the following situations.
●The vehicle speed drops to approxi-mately 0 km/h (0 mph)
●A certain amount of time elapses during operation
●The accelerator pedal is depressed a large amount
WARNING
■The ABS does not operate effec-tively when
●The limits of tire gripping perfor-
mance have been exceeded (such as excessively worn tires on a snow covered road).
●The vehicle hydroplanes while driv-ing at high speed on wet or slick
roads.
■Stopping distance when the ABS
is operating may exceed that of normal conditions
The ABS is not designed to shorten
the vehicle’s stopping distance. Always maintain a safe distance from the vehicle in front of you, especially
in the following situations:
●When driving on dirt, gravel or
snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with pot-holes or uneven surfaces
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4-6. Driving tips
4-6.Driving tips
Use fluids that are appropriate to
the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
Have a service technician
inspect the condition of the bat-
tery.
Have the vehicle fitted with four
snow tires or purchase a set of
tire chains for the front tires.
Ensure that all tires are the same size
and brand, and that chains match the
size of the tires*.
*: Tire chains cannot be mounted on
18-inch tires.
Winter driving tips
Carry out the necessary prepa-
rations and inspections before
driving the vehicle in winter.
Always drive the vehicle in a
manner appropriate to the pre-
vailing weather conditions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents. Failure to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the size specified.
( P.350)
●Maintain the recommended level of air pressure.
●Do not drive at speeds in excess of the speed limit or the speed limit specified for the snow tires being
used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains (except
18-inch tires)
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehi- cle being unable to be driven safely, and may cause death or serious
injury.
●Do not drive in excess of the speed
limit specified for the tire chains being used, or 50 km/h (30 mph), whichever is lower.
●Avoid driving on bumpy road sur-faces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
●Slow down sufficiently before enter-ing a curve to ensure that vehicle control is maintained.
●Do not use LTA (Lane Tracing Assist) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer or legitimate tire retailers.
This is because the removal and attachment of snow tires affects the operation of the tire pressure warning
valves and transmitters.
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7-2. Steps to take in an emergency
When trouble arises
*: Driver’s and front passenger’s seat belt warning buzzer:
The driver’s and front passenger’s seat belt warning buzzer sou nds to alert the
driver and front passenger that his or her seat belt is not fas tened. If the seat belt is
unfastened, the buzzer sounds intermittently for a certain peri od of time after the
vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights*1 (warning buzzer*2)
*1: This light illuminates on the multi-information display.
*2: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt warning buzzer sounds to alert t he rear passenger
that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer
sounds intermittently for a certain period of time after the ve hicle reaches a certain
speed.
■Tire pressure warning light
■LTA indicator* (warning buzzer)
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
Fasten the seat belt.
Warning lightDetails/Actions
When the light comes on after blinking for approximately 1 minute
(a buzzer does not sounds):
Malfunction in the tire pressure warning system
Have the system checked by any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer.
When the light comes on (a buzzer sounds):
Low tire inflation pressure from natural causes
Adjust the tire inflation pressure to the specified cold tire
inflation pressure level. ( P.350)
Low tire inflation pressure from flat tire
Immediately stop the vehicle in a safe place.
Handling method ( P.309)
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in the LTA (Lane Tracing Assist)
Follow the instructions displayed on the multi-information
display. ( P.180)
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7-2. Steps to take in an emergency
When trouble arises
■Warning messages
The warning messages explained below
may differ from the actual messages according to operation conditions and vehicle specifications.
■Warning buzzer
A buzzer may sound when a message is displayed.The buzzer may not be audible if the
vehicle is in a noisy location or if the audio system volume is high.
■If “Engine Stopped Steering Power Low” is displayed
This message is displayed if the engine
is stopped while driving.
When steering wheel operations are heavier than usual, grip the steering wheel firmly and operate it using more
force than usual.
■If “Auto Power OFF to Conserve Battery” is displayed
Power was cut off due to the automatic
power off function. Next time when start- ing the engine, increase the engine speed slightly and maintain that level for
approximately 5 minutes to recharge the battery.
■If “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunc- tioning. Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer immediately.
●The LED headlight system (if equipped)
●AHB (Automatic High Beam)
■If a message that indicates the mal-function of front camera is dis-played
The following systems may be sus- pended until the problem shown in the message is resolved. ( P.159, 304)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●AHB (Automatic High Beam)
●RSA (Road Sign Assist) (if equipped)
●Dynamic radar cruise control
■If a message that indicates the mal- function of radar sensor is dis-played
The following systems may be sus- pended until the problem shown in the message is resolved. ( P.159, 304)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control
If a warning message is
displayed
The multi-information display
shows warnings for system
malfunctions and incorrectly
performed operations, and
messages that indicate a need
for maintenance. When a mes-
sage is displayed, perform the
appropriate corrective action
for the message.
If a warning message is dis-
played again after the appro-
priate actions have been
performed, contact any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Additionally, if a warning light
comes on or flashes at the
same time that a warning mes-
sage is displayed, take the
appropriate corrective action
for the warning light. ( P.304)
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7-2. Steps to take in an emergency
When trouble arises
WARNING
■When using the compact spare tire (if equipped)
●Remember that the compact spare tire provided is specifically designed for use with your vehicle.
Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tires simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-ing operations that cause sudden
engine braking.
■When the compact spare tire (if
equipped) is attached
The vehicle speed may not be cor- rectly detected, and the following sys-
tems may not operate correctly:
• ABS & Brake assist
• VSC
•TRC
• Automatic High Beam (if equipped)
• Dynamic radar cruise control
• EPS
• PCS (Pre-Collision System)
• LTA (Lane Tracing Assist)
• Tire pressure warning system
• Toyota parking assist-sensor (if
equipped)
• Rear view monitor system (if
equipped)
• Navigation system (if equipped)
■Speed limit when using the com- pact spare tire (if equipped)
Do not drive at speeds in excess of 80
km/h (50 mph) when a compact spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe this precaution
may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possi- bility of personal injury during a colli-sion or sudden braking.
NOTICE
■Be careful when driving over bumps with the compact spare tire (if equipped) installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire
compared to when driving with stan- dard tires. Be careful when driving over uneven road surfaces.
■Driving with tire chains and the compact spare tire (if equipped)
Do not fit tire chains to the compact spare tire. Tire chains may damage the vehicle body and adversely affect
driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and transmitter, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning
valve and transmitter may be dam- aged if not handled correctly.