2017 LEXUS RC300H Owners Manual

2974-5. Using the driving support systems
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■If you notice any symptoms
If you notice any of the following symp toms, refer to the likely cause and the
solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle inspected by
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Things you should know
Likely causeSolution
 The image is difficult to see
• The vehicle is in a dark area • The temperature around the lens iseither high or low
• The outside temperature is low • There are water droplets on the cam-era
• It is raining or humid • Foreign matter (mud, etc.) is adheringto the camera
• Sunlight or headlights are shining directly into the camera• The vehicle is under fluorescent lights,
sodium lights, mercury lights etc.
Back up while visually checking the vehi- cle’s surroundings. (Use the monitor
again once conditions have been improved.)The procedure for adjusting the picture
quality of the parking assist monitor is the same as the procedure for adjusting thescreen.( P. 358)
The image is blurry
Dirt or foreign matter (such as water droplets, snow, mud, etc.) is adhering to
the camera.
Flush the camera with a large quantity of water and wipe the camera lens clean
with a soft and wet cloth.
 The image is out of alignment
The camera or surrounding area has
received a strong impact.
Have the vehicle inspected by any autho- rized Lexus dealer or repairer, or anotherduly qualified and equipped professional.
 The guide lines are very far out of alignment
The camera position is out of alignment.
Have the vehicle inspected by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped professional.
• The vehicle is tilted (there is a heavyload on the vehicle, tire pressure is low
due to a tire puncture, etc.) • The vehicle is used on an incline.
If this happens due to these causes, itdoes not indicate a malfunction.
Back up while visually checking the vehi- cle’s surroundings.

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The estimated course lines move even though the steering wheel is straight
There is a malfunction in the signals being output by the steering sensor.
Have the vehicle inspected by any autho-rized Lexus dealer or repairer, or another
duly qualified and equipped professional.
 Guide lines are not displayed
The trunk is open.
Close the trunk. If this does not resolve the symptom, havethe vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
 The estimated course lines are not displayed
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low. • The steering sensor has been rein-stalled.
• There is a malfunct ion in the signals being output by the steering sensor.
Stop the vehicle, and turn the steeringwheel as far as it will go to the left and
right. If this does not resolve the symptom, havethe vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Likely causeSolution

2994-5. Using the driving support systems
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RC300h_EE(OM24740E)
WARNING
■When using the Lexus parking assist monitor system
The parking assist monitor is a supplemental device intended to assist the driver when backing up. When backing up, be sure to check visually behind and all around the vehi-
cle before proceeding.
Observe the following precautions to avoid an accident that could result in death or serious injuries.
●Never depend on the parking assist monitor entirely when backing up. The imageand the position of the guide lines displayed on the screen may differ from the actualstate.
Use caution, just as you would when backing up any vehicle.
●Be sure to back up slowly, depressing the brake pedal to control vehicle speed.
●If you seem likely to hit nearby vehicles , obstacles, people or mount the shoulder,
depress the brake pedal to stop the vehicle.
●The instructions given are only guidelines.
When and how much to turn the steering wheel will vary according to traffic condi-
tions, road surface conditions, vehicle condition, etc. when parking. It is necessary to be fully aware of this before using the parking assist system.
●When parking, be sure to check that th e parking space will accommodate your vehi-
cle before maneuvering into it.
●Do not use the parking assist monitor in the following cases:
• On icy or slick road surfaces, or in snow
• When using tire chains or emergency tires • When the trunk is not closed completely• On roads that are not flat or straight, such as curves or slopes.
●In low temperatures, the screen may darken or the image may become faint. Theimage could distort when the vehicle is moving, or you may become unable to see the
image on the screen. Be sure to check direct visually and with the mirrors all around the vehicle before proceeding.
●If the tire sizes are changed, the position of the guide lines displayed on the screen
may change.
●The camera uses a special lens. The distances between objects and pedestrians that appear in the image displayed on the screen will differ from the actual distances.
( P. 294)
●Estimated course line display mode: If the steering wheel is straight and the vehicle width guide lines and the estimated course lin es are not in alignment, have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.

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NOTICE
■How to use the camera
●The parking assist monitor may not operate properly in the following cases.
• If the back of the vehicle is hit, the position and mounting angle of the camera may
change. • As the camera has a water proof construction, do not detach, disassemble ormodify it. This may cause incorrect operation.
• When cleaning the camera lens, flush the camera with a large quantity of water and wipe it with a soft and wet cloth. Strongly rubbing the camera lens may causethe camera lens to be scratched and unable to transmit a clear image.
• Do not allow organic solvent, car wax, window cleaner or glass coat to adhere to the camera. If this happens, wipe it off as soon as possible.• If the temperature changes rapidly, such as when hot water is poured on the vehi-
cle in cold weather, the system may not operate normally. • When washing the vehicle, do not apply intensive bursts of water to the camera orcamera area. Doing so may result in the camera malfunctioning.
●Do not expose the camera to strong impact as this could cause a malfunction.If this happens, have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional as soon as possible.

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Vehicles without Adaptive Variable Suspension System
Normal mode
Provides an optimal balance of fuel ec onomy, quietness, and dynamic perfor-
mance. Suitable for city driving.
Press the switch to change the driving mode to normal mode when Eco drive mode or sport mode is selected.
Eco drive mode
Helps the driver accelerate in an eco-friendly manner and improve fuel econ-
omy through moderate throttle characteristics and by controlling the opera-
tion of the air conditioning system (heating/cooling).
When not in Eco drive mode, if the driving mode select switch is turned to the left, the Eco drive mode indicator will come on.
Sport mode
Controls the hybrid system to provide quick, powerful acceleration. This
mode also changes the steering feel, making it suitable for when agile driving
response is desired, such as when driving on roads with many curves.
When not in sport mode, if the driving mode select switch is turned to the right, the
“SPORT” indicator will comes on.
Driving mode select switch
The driving modes can be select ed to suit driving condition.
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Vehicles with Adaptive Variable Suspension System
Normal mode
Provides an optimal balance of fuel ec onomy, quietness, and dynamic perfor-
mance. Suitable for city driving.
Press the switch to change the driving mode to normal mode when Eco drive mode or sport mode is selected.
Eco drive mode
Helps the driver accelerate in an eco-friendly manner and improve fuel econ-
omy through moderate throttle characteristics and by controlling the opera-
tion of the air conditioning system (heating/cooling).
When not in Eco drive mode, if the driving mode select switch is turned to the left, the Eco drive mode indicator will come on.
Sport mode
•SPORT S mode
Controls the hybrid system to provide quick, powerful acceleration. This
mode is suitable for when agile driving response is desired, such as when
driving on roads with many curves.
When not in SPORT S mode, if the drivin g mode select switch is turned to the right, the “SPORT S” indicator will come on.
•SPORT S+ mode
Helps to ensure steering performanc e and driving stability by simultane-
ously controlling the steering and suspen sion in addition to the hybrid sys-
tem. Suitable for sportier driving.
When in SPORT S mode, if th e driving mode select switch is turned to the right, the “SPORT S+” indicator will come on.
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■Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the air condi- tioning system to enhance fuel efficiency ( P. 432). To improve air conditioning perfor- mance, adjust the fan speed or turn off Eco drive mode.
■Sport mode automatic deactivation
Sport mode is automatically deactivated if the power switch is turned off after driving in sport mode.

3044-5. Using the driving support systems
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◆ECB (Electronically Controlled Brake System)
The electronically controlled system generates braking force corresponding
to the brake operation
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if the
brakes are applied while driving on a slippery road surface
◆Brake assist
Generates an increased level of braking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces
◆VSC+ (Vehicle Stability Control+)
Provides cooperative control of the ABS, TRC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road sur-
faces by controlling steering performance.
◆TRC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
◆Hill-start assist control
Helps to prevent the vehicle from rolling backward when starting on an incline
or slippery slope
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel
Driving assist systems
To help enhance driving safety and performance, the following systems oper-
ate automatically in response to various driving situations. Be aware, however,
that these systems are suppl ementary and should not be relied upon too heav-
ily when operating the vehicle.