Page 218 of 492

2184-5. Toyota Safety Sense
YARIS_HV_EE_OM52F30E 
■ Conditions under which the system may operate even if there is no pos- 
sibility of a collision 
In the following situations the sensor may detect an object and cause the sys- 
tem to determine that there is a possibility of a frontal collision and operate. 
When there is an object (traffic sign, guard rail, etc.) by the roadside at 
the entrance of a curve 
When passing an oncoming vehicle on a curve
When passing an oncoming vehicle while making a left or right turn
When rapidly closing on a preceding vehicle
When rapidly closing on an electric toll gate barrier, parking area barrier, 
or other barrier that opens and closes 
When approaching an overpass, traffic sign, billboard, etc.
When the front part of the vehicle is raised or lowered
When the sensor is misaligned due to a strong impact being applied to 
the sensor, etc. 
When there is a structural object (billboard, street light, etc.) at the top of 
an uphill road 
When there is a metal object (manhole cover, steel plate, etc.) at the bot- 
tom of a downhill road 
When approaching a low hanging object that may contact the vehicle, 
such as a banner or tree branches 
When driving through dense fog or smoke
When the vehicle is hit by water or snow from a preceding vehicle, etc.
1
2
3
4
5
6
7
8
9
10
11
12
13 
         
        
        
     
        
        Page 219 of 492

2194-5. Toyota Safety Sense
4
Driving
YARIS_HV_EE_OM52F30E 
When there is a reflective object, bump, protrusion, etc. on the road sur- 
face 
When the vehicle is being parked in a place where there is a low hanging 
object at the height of the front sensor 
When passing extremely close to an object (stopped vehicle, guardrail, 
etc.) 
■ Situations in which the pre-crash safety system may not function prop- 
erly 
The system may not function properly in the following situations: 
When driving on roads with sharp bends or uneven surfaces 
If a vehicle suddenly moves in front of your vehicle, such as at an inter- 
section 
If a vehicle suddenly cuts in front of your vehicle
If your vehicle is skidding
When the front part of the vehicle is raised or lowered
When the windshield is dirty or cover ed with raindrops, condensation, ice, 
snow, etc. 
When the sensor is misaligned due to a strong impact being applied to 
the sensor, etc. 
When a preceding vehicle is a poor reflector of laser (the rear part of the 
vehicle lowered, very dirty, etc.) 
When a very bright light, such as the sun or the headlights of oncoming 
traffic, shines directly into the front sensor 
When driving in inclement weather such as heavy rain, fog, snow or a 
sand storm 
When the surrounding area is dark, such as while in a tunnel or during 
nighttime
14
15
16
1
2
3
4
5
6
7
8
9
10
11 
         
        
        
     
        
        Page 220 of 492

2204-5. Toyota Safety Sense
YARIS_HV_EE_OM52F30E 
■ If the PCS warning light flashes 
The pre-crash safety system may be temporarily unavailable or there may be 
a malfunction in the system. 
● In the following situations, the warning light will be cleared and the system 
will become operational when normal operating conditions return: 
• When the area around the front sensor is hot, such as after the vehicle 
has been parked in the sun 
• When the windshield is fogged up or covered with condensation or ice 
• If the area in front of the front sens or is obstructed, such as when the 
hood is open 
● If the PCS warning light continues to flash, the system may be malfunction- 
ing. Have the vehicle inspected by any authorized Toyota dealer or repairer, 
or another duly qualified and equi pped professional immediately. 
■ If the TRC and VSC are disabled 
● If the TRC and VSC are disabled (→P. 239), pre-crash brake assist and pre- 
crash braking are also disabled. However, the pre-crash warning function 
will still operate. 
● The PCS warning light illuminates. 
         
        
        
     
        
        Page 223 of 492
223
4
4-5. Toyota Safety Sense
Driving
YARIS_HV_EE_OM52F30E
LDA (Lane Depar ture Alert)∗
While driving on a road that has lane markers, this system recognizes 
the lane markers using a camera as a sensor to alert the driver when 
the vehicle deviates from its lane. 
If the system judges that the vehicle has deviated from its lane, it 
alerts the driver using a buzzer and indications on the meter. 
Front sensor 
Press the LDA switch to activate 
the system.
The LDA indicator will come on. 
Press the switch again to turn the 
LDA system off. 
The LDA system will remain on or 
off even if the power switch is 
turned to ON mode.
● When the vehicle speed is approximately 50 km/h (32 mph) or 
more 
● When the lane width is more than approximately 3 m (9.8 ft.) 
● When driving on a straight road or through a curve with a radius of 
more than approximately 150 m (492 ft.)
∗: If equipped
Summary of function
Turning the LDA system on
Operating conditions 
         
        
        
     
        
        Page 225 of 492

2254-5. Toyota Safety Sense
4
Driving
YARIS_HV_EE_OM52F30E
■Temporary cancelation of the LDA system functions 
If any of the following occurs, the LDA system functions will be temporarily 
canceled. The functions will resume  after the necessary operating conditions 
have returned. 
● The turn signal lever is operated. 
● The vehicle speed deviates from the operating range of the LDA system 
functions. 
● When the lane lines cannot be recognized while driving. 
● When the lane departure warning sounds.  
The lane departure warning function will not operate again for a several sec-
onds after it has been activated, even if the vehicle leaves the lane again. 
■ The lane departure warning 
Depending on the audio system sound level or air conditioning fan noise 
while the audio system or air conditioning sy stem is in use, it may be difficult 
to hear the warning sound. 
■ After the vehicle has been parked in the sun 
The LDA system may not be immediatel y available. When the temperature in 
the cabin decreases and the temperature around the front sensor ( →P. 212) 
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 departure warning will not operate for the side on which lane mark- 
ers could not be recognized. 
■ Conditions in which the function may not operate correctly 
In the following situations, the front  sensor may be unable to recognize lane 
markers causing the lane departure warning function to operate incorrectly. 
However, this does not indicate a malfunction. 
● When driving through an area, such as a tollbooth, a crossing or before a 
ticket checkpoint 
● When driving on a sharp curve 
● When lane markers 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 
● When the lane markers are yellow (These may be more difficult for the sys- 
tem to recognize compared to white markers.) 
● When the lane markers are broken, Botts’ dots (raised pavement markers) 
or stones 
         
        
        
     
        
        Page 228 of 492
2284-5. Toyota Safety Sense
YARIS_HV_EE_OM52F30E
Automatic High Beam∗
Push the lever away from you 
with the headlight switch in 
 or   position. 
Press the Automatic High 
Beam switch.
The Automatic High Beam indica- 
tor will come on green when the
headlights are turned on automati- 
cally to indicate that the system is 
active.
∗: If equipped
The Automatic High Beam uses an in-vehicle front sensor to 
assess the brightness of streetlights, the lights of oncoming and 
preceding vehicles, etc., and automatically turns high beam on 
or off as necessary.
Activating the Automatic High Beam system
1
2 
         
        
        
     
        
        Page 230 of 492

2304-5. Toyota Safety Sense
YARIS_HV_EE_OM52F30E 
■Switching to high beam 
Press the Automatic High 
Beam switch.
The Automatic High Beam indi- 
cator will turn off and the Head- 
light high beam indicator will
turn on. 
Press the switch to activate the 
Automatic High Beam system
again.
■ The Automatic High Beam can be operated when 
The power switch is in ON mode. 
■ Front sensor detection information 
● High beam may not be automatically turned off in the following situations: 
• When oncoming vehicles suddenly appear from a curve 
• When the vehicle is cut in front of by another
• When oncoming or preceding vehicles are hidden from sight due to 
repeated curves, road divi ders or roadside trees 
● High beam may be turned off if an oncoming vehicle that is using fog lights 
without using the headlights is detected. 
● House lights, street lights, red traffic signals, and illuminated billboards or 
signs may cause the high beam to turn off. 
● The following factors may affect the amount of time taken to turn high beam 
on or off: 
• The brightness of headlights, fog lights, and tail lights of oncoming and 
preceding vehicles 
• The movement and direction of oncoming and preceding vehicles
• When a oncoming or preceding vehicle only has operational lights on one 
side 
• When a oncoming or preceding vehi cle is a two-wheeled vehicle 
• The condition of the road (gradient, curve, condition of the road surface, 
etc.) 
• The number of passengers and amount of luggage 
         
        
        
     
        
        Page 231 of 492

2314-5. Toyota Safety Sense
4
Driving
YARIS_HV_EE_OM52F30E 
● High beam may be turned on or off when unexpected by the driver. 
● In the situations below, the system may not be able to correctly detect the 
surrounding brightness levels, and may flash or expose nearby pedestrians 
to the high beam. Therefore, you shoul d consider turning the high beams on 
or off manually rather than relying on the Automatic High Beam system. 
• In bad weather (rain, snow, fog, sandstorms, etc.) 
• The windshield is obscured by fog, mist, ice, dirt, etc.
• The windshield is cracked or damaged. 
• The front sensor is deformed or dirty. 
• The front sensor temperature is extremely high.
• Surrounding brightness levels are equal to those of headlights, tail lights 
or fog lights. 
• Vehicles ahead have headlights or tail lights that are either switched off,
dirty, are changing color, or are not aimed properly. 
• When driving through an area of intermittently changing brightness and 
darkness.
• When frequently and repeatedly driving ascending/descending roads, or 
roads with rough, bumpy or uneven surfaces (such as stone-paved 
roads, gravel tracks, etc.).
• When frequently and repeatedly taking curves or driving on a winding 
road. 
• There is a highly reflective object ahead of the vehicle, such as a sign or
a mirror. 
• The back of a vehicle ahead is highly reflective, such as a container on a 
truck.
• The vehicle’s headlights are damaged or dirty. 
• The vehicle is listing or titling, due to a flat tire, a trailer being towed, etc. 
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby. 
■ If the Automatic High Beam indicator comes on in yellow 
It may indicate a malfunction in the system. Contact any authorized Toyota 
dealer or repairer, or another duly qualified and equipped professional. 
WARNING 
■ Limitations of the Automatic High Beam 
Do not rely on the Automatic High Beam. Always drive safely, taking care to 
observe your surroundings and turning high beam on or off manually if nec- 
essary.