Lexus CT (2021 year). Manual in english — page 15

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4-5. Using the driving support systems

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Area displayed on screen

The rear view monitor system dis-
plays an image of the view from the
bumper of the rear area of the vehi-
cle.
The image on the rear view monitor
system screen can be adjusted.
(



P. 462)

• The area displayed on the screen

may vary according to vehicle orien-

tation conditions.

• Objects which are close to either

corner of the bumper or under the

bumper cannot be displayed.

• The camera uses a special lens. The

distance of the image that appears

on the screen differs from the actual

distance.

• Items which are located higher than

the camera may not be displayed on

the monitor.

• If your vehicle is equipped with a backlit license plate, it may interfere with the dis-

play.

Rear view monitor system precautions

Corners of bumper

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4-5. Using the driving support systems

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Rear view monitor system camera

The camera for the rear view moni-
tor system is located above the
license plate.

●

Using the camera
If dirt or foreign matter (such as water droplets, snow, mud etc.) is adhering
to the camera, it cannot transmit a clear image. In this case, flush it with a
large quantity of water and wipe the camera lens clean with a soft and wet
cloth.

■

Differences between the screen and the actual road

The distance guide lines and the vehicle width guide lines may not actually be
parallel with the dividing lines of the parking space, even when they appear to
be so. Be sure to check visually.
The distances between the vehicle width guide lines and the left and right
dividing lines of the parking space may not be equal, even when they appear
to be so. Be sure to check visually.
The distance guide lines give a distance guide for flat road surfaces. In any of
the following situations, there is a margin of error between the fixation guide
lines on the screen and the actual distance/course on the road.

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4-5. Using the driving support systems

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●

When the ground behind the vehicle slopes up sharply
The distance guide lines will
appear to be closer to the vehicle
than the actual distance. Because
of this, objects will appear to be
farther away than they actually
are. In the same way, there will be
a margin of error between the
guide lines and the actual dis-
tance/course on the road.

●

When the ground behind the vehicle slopes down sharply
The distance guide lines will
appear to be further from the
vehicle than the actual distance.
Because of this, objects will
appear to be closer than they
actually are. In the same way,
there will be a margin of error
between the guide lines and the
actual distance/course on the
road.

●

When any part of the vehicle sags
When any part of the vehicle sags
due to the number of passengers
or the distribution of the load,
there is a margin of error between
the fixation guide lines on the
screen and the actual distance/
course on the road.

A margin of error

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4-5. Using the driving support systems

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When approaching three-dimensional objects

The distance guide lines are displayed according to flat surfaced objects (such
as the road). It is not possible to determine the position of three-dimensional
objects (such as vehicles) using the distance guide lines. When approaching a
three-dimensional object that extends outward (such as the flatbed of a truck),
be careful of the following.

●

Vehicle width guide lines
Visually check the surroundings
and the area behind the vehicle.
In the case shown in the illustra-
tion, the truck appears to be out-
side of the vehicle width guide
lines and the vehicle does not
look as if it hits the truck. How-
ever, the rear body of the truck
may actually cross over the vehi-
cle width guide lines. In reality if
you back up as guided by the
vehicle width guide lines, the
vehicle may hit the truck.

●

Distance guide lines
Visually check the surroundings
and the area behind the vehicle.
On the screen, it appears that a
truck is parking at point

. How-

ever, in reality if you back up to
point

, you will hit the truck.

On the screen, it appears that
is closest and

is farthest away.

However, in reality, the distance to

and

is the same, and

is

farther than

and

.

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1

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2

1

3

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If you notice any symptoms

If you notice any of the following symptoms, 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 retailer or Lexus authorized repairer, or any reliable
repairer.

Things you should know

Likely cause

Solution



The image is difficult to see

• The vehicle is in a dark area

• The temperature around the lens is

either 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 adhering to

the camera

• There are scratches on the camera

• Sunlight or headlights are shining

directly into the camera

• The vehicle is under fluorescent lights,

sodium lights, mercury lights etc.

If this happens due to these causes, it

does not indicate a malfunction.

Back up while visually checking the

vehicle’s surroundings. (Use the monitor

again once conditions have been

improved.)

The image on the rear view monitor

system screen can be adjusted.

(



P. 462)



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 retailer or Lexus authorized

repairer, or any reliable repairer.



The fixed guide lines are very far out of alignment

The camera position is out of alignment.

Have the vehicle inspected by any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

• The vehicle is tilted (there is a heavy

load 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, it

does not indicate a malfunction.

Back up while visually checking the vehi-

cle’s surroundings.

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4-5. Using the driving support systems

WARNING

■

When using the rear view monitor system

The rear view monitor system 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 vehicle before proceeding.
Observe the following precautions to avoid an accident that could result in death or

serious injuries.

●

Never depend on the rear view monitor system entirely when backing up. The image

and the position of the guide lines displayed on the screen may differ from the actual

state.

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.

●

The instructions given are only guide lines.

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 rear view monitor system.

●

When parking, be sure to check that the parking space will accommodate your vehi-

cle before maneuvering into it.

●

Do not use the rear view monitor system in the following cases:
• On icy or slick road surfaces, or in snow

• When using tire chains or emergency tires

• When the back door 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. The

image 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 fixed 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. 362)

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NOTICE

■

How to use the camera

●

The rear view monitor system 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 or

modify 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 cause

the 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 or

camera area. Doing so may result in the camera malfunctioning.

• When the camera is used under fluorescent lights, sodium light or mercury light

etc., the lights and the illuminated areas may appear to flicker.

●

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 retailer or Lexus autho-

rized repairer, or any reliable repairer as soon as possible.

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4-5. Using the driving support systems

Driving mode select switch

Normal mode
Eco drive mode

Suitable for improving the fuel economy,

because the torque corresponding to

the accelerator pedal depression

amount can be generated more

smoothly than it is in normal conditions

and the operation of the air conditioning

system (heating/cooling) will be mini-

mized.
When the driving mode select switch is turned left, the “ECO” indicator comes on in

the multi-information display.
Press the switch to change the driving mode to normal mode.

Sport mode

Use when high levels of response and feeling are desirable, such as when driving in

mountainous regions or when overtaking.
When the driving mode select switch is turned right, the “SPORT” indicator comes on

in the multi-information display.
Press the switch to change the driving mode to normal mode.

■

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. 555, 562). To improve air conditioning

performance, 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.

The driving modes can be selected to suit driving conditions.

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Driving assist systems

◆

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

◆

TRC (Traction Control)

Helps to maintain drive power and prevent the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads

◆

EPS (Electric Power Steering)

Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel

◆

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.

◆

Hill-start assist control

Helps to prevent the vehicle from rolling backward when starting on an incline

◆

Emergency brake signal

When the brakes are applied suddenly, the stop lights automatically flash to
alert the vehicle behind.

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 supplementary and should not be relied upon too heav-
ily when operating the vehicle.

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4-5. Using the driving support systems

The slip indicator light will flash while
the VSC/TRC/ABS systems are oper-
ating.

If the vehicle gets stuck in mud, dirt or snow, the TRC system may reduce power

from the hybrid system to the wheels. Pressing

to turn the system off may

make it easier for you to rock the vehicle in order to free it.
To turn the TRC system off, quickly

press and release

.

The “TRC OFF” indicator light will come

on.

Press

again to turn the system

back on.

When the VSC/TRC/ABS systems are operating

Disabling the TRC system

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When the “TRC OFF” indicator comes on even if the TRC OFF switch has not been

pressed

TRC and hill-start assist control cannot be operated. Contact any authorized Lexus

retailer or Lexus authorized repairer, or any reliable repairer.

■

Sounds and vibrations caused by the ABS, brake assist, VSC, TRC and hill-start assist

control systems

●

A sound may be heard from the engine compartment when the hybrid system is

started, just after the vehicle begins to move, if the brake pedal is depressed forcefully

or repeatedly, or 1-2 minutes after the hybrid system is stopped. This sound does not

indicate that a malfunction has occurred in any of these systems.

●

Any of the following conditions may occur when the above systems are operating.

None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.

• A motor sound may be heard after the vehicle comes to a stop.

• The brake pedal may pulsate slightly after the ABS is activated.

• The brake pedal may move down slightly after the ABS is activated.

■

EPS operation sound

When the steering wheel is operated, a motor sound (whirring sound) may be heard.

This does not indicate a malfunction.

■

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 hybrid system off. The EPS system should return to nor-

mal within 10 minutes.

■

Operating conditions of hill-start assist control

When the following four conditions are met, the hill-start assist control will operate:

●

The shift position is in a position other than P or N (when starting off forward/backward

on an upward incline).

●

The vehicle is stopped.

●

The accelerator pedal is not depressed.

●

The parking brake is not engaged.

■

Automatic system cancelation of hill-start assist control

The hill-start assist control will turn off in any of the following situations:

●

Shift the shift position to P or N

●

The accelerator pedal is depressed

●

The parking brake is engaged.

●

Approximately 2 seconds elapse after the brake pedal is released.

■

Automatic reactivation of TRC system

After turning the TRC system off, the system will be automatically re-enabled in the fol-

lowing situations:

●

When the power switch is turned off

●

The TRC will turn on when vehicle speed increases

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Operating conditions of emergency brake signal

When the following three conditions are met, the emergency brake signal will operate:

●

The emergency flashers are off.

●

Actual vehicle speed is over 55 km/h (35 mph).

●

The brake pedal is depressed in a manner that cause the system to judge from the vehi-

cle deceleration that this is a sudden braking operation.

■

Automatic system cancelation of emergency brake signal

The emergency brake signal will turn off in any of the following situations:

●

The emergency flashers are turned on.

●

The brake pedal is released.

●

The system judges from the vehicle deceleration that is not a sudden braking operation.

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WARNING

■

The ABS does not operate effectively when

●

The limits of tire gripping performance have been exceeded (such as excessively

worn tires on a snow covered road).

●

The vehicle hydroplanes while driving at high speed on wet or slick road.

■

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 potholes or uneven surfaces

■

TRC may not operate effectively when

Directional control and power may not be achievable while driving on slippery road

surfaces, even if the TRC system is operating.

Drive the vehicle carefully in conditions where stability and power may be lost.

■

When the VSC is activated

The slip indicator light flashes. Always drive carefully. Reckless driving may cause an

accident. Exercise particular care when the indicator light flashes.

■

Hill-start assist control does not operate effectively when

●

Do not overly rely on the hill-start assist control. The hill-start assist control may not

operate effectively on steep inclines and roads covered with ice.

●

Unlike the parking brake, hill-start assist control is not intended to hold the vehicle

stationary for an extended period of time. Do not attempt to use hill-start assist con-

trol to hold the vehicle on an incline, as doing so may lead to an accident.

■

When the TRC system is turned off

Be especially careful and drive at a speed appropriate to the road conditions. As this is

the system to help ensure vehicle stability and driving force, do not turn the TRC sys-

tem off unless necessary.

■

Replacing tires

Make sure that all tires are of the specified size and of the same brand, tread pattern

and total load capacity. In addition, make sure that the tires are inflated to the recom-

mended tire inflation pressure level.
The ABS, VSC and TRC systems will not function correctly if different tires are installed

on the vehicle.

Contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable

repairer for further information when replacing tires or wheels.

■

Handling of tires and the suspension

Using tires with any kind of problem or modifying the suspension will affect the driving

assist systems, and may cause a system to malfunction.

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4-6. Driving tips

Hybrid vehicle driving tips

◆

Using Eco drive mode

When using Eco drive mode, the torque corresponding to the accelerator
pedal depression amount can be generated more smoothly than it is in normal
conditions. In addition, the operation of the air conditioning system (heating/
cooling) will be minimized, improving the fuel economy. (



P. 368)

◆

Use of Hybrid System Indicator

The Eco-friendly driving is possible by keeping the indicator needle of Hybrid
System Indicator within Eco area. (



P. 102)

◆

Changing the shift position

Shift the shift position to D when stopped at a traffic light, or driving in heavy
traffic etc. Shift the shift position to P when parking. When using the N posi-
tion, there is no positive effect on fuel consumption. In the N position, the gas-
oline engine operates but electricity cannot be generated. Also, when using
the air conditioning system, etc., the hybrid battery (traction battery) power is
consumed.

◆

Accelerator pedal/brake pedal operation

●

Drive your vehicle smoothly. Avoid abrupt acceleration and deceleration.
Gradual acceleration and deceleration will make more effective use of the
electric motor (traction motor) without having to use gasoline engine
power.

●

Avoid repeated acceleration. Repeated acceleration consumes hybrid bat-
tery (traction battery) power, resulting in poor fuel consumption. Battery
power can be restored by driving with the accelerator pedal slightly
released.

◆

When braking

Make sure to operate the brakes gently and in a timely manner. A greater
amount of electrical energy can be retained when slowing down.

For economical and ecological driving, pay attention to the following points:

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Delays

Repeated acceleration and deceleration, as well as long waits at traffic lights,
will lead to bad fuel economy. Check traffic reports before leaving and avoid
delays as much as possible. When driving in a traffic jam, gently release the
brake pedal to allow the vehicle to move forward slightly while avoiding over-
use of the accelerator pedal. Doing so can help control excessive gasoline
consumption.

◆

Highway driving

Control and maintain the vehicle at a constant speed. Before stopping at a toll
booth or similar, allow plenty of time to release the accelerator and gently
apply the brakes. A greater amount of electrical energy can be regenerated
when slowing down.

◆

Air conditioning

Use the air conditioning only when necessary. Doing so can help reduce
excessive gasoline consumption.
In summer: When the ambient temperature is high, use the recirculated air
mode. Doing so will help to reduce the burden on the air conditioning system
and reduce fuel consumption as well.
In winter: Because the gasoline engine will not automatically cut out until it
and the interior of the vehicle are warm, it will consume fuel. Fuel consumption
can be improved by avoiding overuse of the heater.

◆

Checking tire inflation pressure

Make sure to check the tire inflation pressure frequently. Improper tire infla-
tion pressure can cause poor fuel economy.
Also, as snow tires can cause large amounts of friction, their use on dry roads
can lead to poor fuel economy. Use tires that are appropriate for the season.

◆

Luggage

Carrying heavy luggage will lead to poor fuel economy. Avoid carrying
unnecessary luggage. Installing a large roof rack will also cause poor fuel
economy.

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4-6. Driving tips

◆

Warming up before driving

Since the gasoline engine starts up and cuts out automatically when cold,
warming up the engine is unnecessary. Moreover, frequently driving short dis-
tances will cause the engine to repeatedly warm up, which can lead to excess
fuel consumption.