2014 TOYOTA PRIUS steering sensor

294 2-4. Using other driving systems
PRIUS_OM_OM47857U_DVD_(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.

295
2-4. Using other
driving systems
PRIUS_OM_OM47857U_DVD_(U)
2
When driving
■No-handed driving warning
If the steering wheel is not operated for approximately 15 seconds on a
straight road or approximately 5 seconds on a curve, the buzzer will beep
twice, indicators on the multi-information display will flash, and the lane
keeping assist function will be temporarily canceled. If you drive the vehicle
with your hands lightly touching the steering wheel, this may also be
detected as no-handed driving.
■ After the vehicle has been parked in the sun
The LKA system functions may not be available and a warning message
(P. 520) will be displayed for a while after driving has started. In such
cases, turn the LKA system off and turn it on again after normal temperature
returns. When the temperature in the cabin decreases and the temperature
around the camera sensor ( P. 289) becomes suitable for its operation, the
functions will begin to operate.
■ If there are lane markers on only one side of the vehicle
The lane keeping assist function will not operate. Also, the lane departure
warning will not operate for the side on which lane markers could not be rec-
ognized.
■ Conditions in which the function may not operate correctly
In the following conditions, the LKA system functions may not operate, or it
may not be possible to ensure adequate performance. Also, the camera
sensor may be unable to recognize lane lines causing the lane departure
warning function to operate incorrectly, or the lane keeping assist function
may not operate properly. However, this does not indicate a malfunction.
●When driving through an area with no lane markers, such as a tollbooth,
a crossing or before a ticket checkpoint
● When driving on a sharp curve
● When lanes are extremely narrow or extremely wide
● When the vehicle leans to one side an unusual amount due to a heavy
load or improper tire inflation pressure
● When the following distance between your vehicle and the vehicle ahead
is extremely short

469
4-3. Do-it-yourself maintenance
PRIUS_OM_OM47857U_DVD_(U)
4
Maintenance and care
FUSEAmpereCircuit
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A Moon roof
20 ECU-IG NO.1 10A Electric cooling fans, multiplex
communication system, vehicle
proximity notification system
21 ECU-IG NO.2 10A Driver support system, Pre-Colli-
sion System, LKA system, inside
rear view mirror, garage door
opener, yaw rate & G sensor,
brake system, electric power
steering, navigation system, moon
roof, tire pressure warning system,
seat belt pretensioners, audio sys-
tem, emergency flashers, turn sig-
nal lights, windshield wipers,
headlight cleaner
22 GAUGE 10A Headlight leveling system, gauges
and meters, emergency flashers,
turn signal lights
23 A/C 10A Air conditioning system, Solar
Ventilation System, Remote Air
Conditioning System
24 WASHER 15A Windshield washer

520 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning messageDetailsCorrection procedure
(If equipped) Indicates that the LKA (Lane-
Keeping Assist) is suspended
• The camera sensor tempera-
ture is higher than the opera-
tion temperature range.
• The power steering system operation is restricted. Restart the LKA
after driving for a
while.
Alerts the driver that the vehi-
cle is out of the lanes (while
the LKA [Lane-Keeping Assist]
system is operating). The warning buzzer sounds
continuously. The lane mark-
ings and/or the steering
wheel marking flash.
At the same time,
will appear on the
head-up display (the image
flashes). Check around the
vehicle and back to
inside of the lane
markings.
Indicates that the LKA (Lane-
Keeping Assist) system
detects nohanded driving
(while the lane keeping assist
function is operating). The warning buzzer sounds
twice. Grip the steering
wheel firmly.
The hybrid system has over-
heated. A buzzer also sounds.
This message may be dis-
played when driving under
severe operating conditions.
(For example, when driving
up a long steep hill.) Stop and check.
(
P. 556)

632 Alphabetical index
PRIUS_OM_OM47857U_DVD_(U)
Steering wheelAdjustment ............................ 119
Audio switches
*
Storage feature......................... 361
StuckIf your vehicle becomes
stuck ................................... 561
Sun visors................................. 368
Switch Audio remote control switches
*
Cruise control switch ............. 268
Driving mode selectswitch .................................. 206
Eco drive mode switch .......... 206
Emergency flasher switch ..... 490
EV drive mode switch............ 201
Fog light switch ..................... 258
Hazard light switch ................490
Headlight cleaner switch ....... 267
Ignition switch........................ 194
Light switches........................ 252
Power door lock switch ...........89
“POWER” switch ................... 194
Power window switch ............ 126
Pre-collision braking off switch .................................. 308
Talk switch
*
Telephone switch*
Ventilation switch .................. 343
Window lock switch ............... 126
Wipers and washer switch .... 260 Tail lights
Switch ................................... 252
Talk switch
*
Telephone switch*
Theft deterrent system Immobilizer system ............... 138
Tire inflation pressure ............. 453
Tire information Glossary ................................ 588
Size ....................................... 584
Tire identification number...... 583
Uniform Tire Quality
Grading ............................... 586
Tires Chains ................................... 323
Checking ............................... 443
If you have a flat tire.............. 530
Inflation pressure .................. 453
Inflation pressure sensor....... 444
Information ............................ 581
Replacing .............................. 530
Rotating tires ......................... 443
Size ....................................... 575
Snow tires ............................. 321
Spare tire .............................. 530
Tire pressure warning
system ........................ 443, 505
T