Page 382 of 818

3805-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
WARNING
■Before using LTA system
● Do not rely solely upon the LTA system. The LTA system does not auto-
matically drive the vehicle or reduce the amount of attention that must be
paid to the area in front of the vehicle. The driver must always assume full
responsibility for driving safely by paying careful attention to the surround-
ing conditions and operating the steering wheel to correct the path of the
vehicle. Also, the driver must take adequate breaks when fatigued, such
as from driving for a long period of time.
● Failure to perform appropriate driving operations and pay careful attention
may lead to an accident, resulting in death or serious injury.
● When not using the LTA system, use the LTA switch to turn the system off.
■ Situations unsuitable for LTA system
In the following situations, use the LTA switch to turn the system off. Failure
to do so may lead to an accident, resulting in death or serious injury.
● Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.
● Vehicle is driven on a snow-covered road.
● White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
● Vehicle is driven in a temporary lane or restricted lane due to construction
work.
● Vehicle is driven in a construction zone.
● A spare tire, tire chains, etc. are equipped.
● When the tires have been excessively worn, or when the tire inflation pres-
sure is low.
● During emergency towing.
■ Preventing LTA system malfunctions and operations performed by
mistake
● Do not modify the headlights or place stickers, etc. on the surface of the
lights.
● Do not modify the suspension etc. If the suspension etc. needs to be
replaced, contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
● Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.).
● If your windshield needs repairs, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Page 461 of 818

4595-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
5
Driving
■Situations in which the system may operate even if there is no possibil-
ity of a collision
In some situations, such as the following, the system may operate even
though there is no possibility of a collision.
● When driving toward a banner, flag, low-hanging branch or boom barrier
(such as those used at railroad crossings, toll gates and parking lots)
● When there is a rut or hole in the surface of the road
● When driving on a metal cover (grating), such as those used for drainage
ditches
● When driving up or down a steep slope
● If a sensor is hit by a large amount of water, such as when driving on a
flooded road
● There is dirt, snow, water drops or ice on a sensor. (Cleaning the sensors
will resolve this problem.)
● A sensor is coated with a sheet of spray or heavy rain
● When driving in inclement weather such as fog, snow or a sandstorm
● When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of ot her vehicles or other devices which
produce ultrasonic waves are near the vehicle
● If the front of the vehicle is raised or lowered due to the carried load
● If the orientation of a sensor has been changed due to a collision or other
impact
● Driving close to columns (H-shaped steel beams, etc.) in multi-story parking
garages, construction sites, etc.
● If the vehicle cannot be driven in a stable manner, such as when the vehicle
has been in an accident or is malfunctioning
● When driving on a narrow road
● When strong winds are blowing
Page 656 of 818

6548-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
To have your vehicle towed by another vehicle, the towing eyelet must
be installed to your vehicle. Install the towing eyelet using the follow-
ing procedure.
Take out the wheel nut wrench and towing eyelet. ( P. 613)
Remove the eyelet cover using
a flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench or hard metal bar.
When tightening with a wheel nut
wrench or hard metal bar, make
sure not to damage the vehicle
body.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the hybrid system.
If the hybrid system does not start, turn the power switch to ON mode.
Turn off the Parking Support Brake function. (if equipped): P. 464
Emergency towing procedure
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