2017 LEXUS RC300H steering

2714-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
WARNING
■Conditions under which the vehicle-to-vehicle distance control mode may not func- tion correctly
Operate the brake pedal (or accelerator pedal operation depending on the situation)
as necessary in the following conditions as the radar sensor may not be able to cor- rectly detect vehicles ahead, which may lead to an accident resulting in death or seri-ous injury.
●When water or snow thrown up by the surrounding vehicles hinders the detecting ofthe sensor
●When your vehicle is pointing upwards(caused by a heavy load in the trunk, etc.)
●When the road curves or when the lanes arenarrow
●When steering wheel operation or your posi-tion in the lane is unstable
●When the vehicle ahead of you decelerates
suddenly
Accelerate Accelerate Decelerate

2774-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
●When sunlight or the headlights of oncoming vehicles are shining directly into the cam- era lens
●When driving on roads that are branching or merging
●When driving on a road surface that is wet du e to rain, previous rainfall, standing water, etc.
●When the vehicle experiences strong up-and-down motion such as when driving on an
extremely rough road or on a seam in the pavement
●When headlight brightness at nighttime is reduced due to dirt on the lenses, or when the headlights are misaligned
●When driving on winding roads or roads that are uneven
●When driving on rough or unpaved roads
■When changing the tires
Depending on the tires used, sufficient performance may not be maintainable.
■Warning messages for the LDA system
Warning messages are used to indicate a syst em malfunction or to inform the driver of
the need for caution while driving. ( P. 549)
WARNING
■Before using the LDA system
Do not rely solely on the LDA system. The LDA system does not drive the vehicle auto- matically, nor does it reduce the amount of care you need to take. As such, the driver
must always assume full responsibility fo r understanding his/her surroundings, for operating the steering wheel to correct the driving line, and for driving safely.
Inappropriate or negligent driving could lead to an accident.
■To avoid operating the LDA by mistake
Switch the LDA system off using the LDA switch when not in use.
■Situations unsuitable for LDA system
Do not use the LDA system in any of the following situations.
Otherwise, the system may not function correctly and could result in an accident.
●When driving with tire chains, a spare tire, or similar equipment
●When there are objects or structures along the roadside that might be misinterpreted as lane markers (such as guardrails, a curb, reflector posts, etc.)
●When driving on snowy roads
●When pavement lane markers are difficult to see due to rain, snow, fog, sand, dirt, etc.
●When there are visible lines on the pavement from road repairs, or if the remains of old lane markers are still visible on the road
●When driving on a road with lane closures due to maintenance, or when driving in a temporary lane

2874-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
■Using the system
Use any of the following modes.
●Estimated course line display mode ( P. 289)
Estimated course lines are dis-
played which move in accor-
dance with the operation of the
steering wheel.
●Parking assist guide line display mode ( P. 291)
The steering wheel return points
(parking assist guide lines) are
displayed.
●Distance guide line display mode
Distance guide lines only are dis-
played.

2894-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
■Screen description
Estimated course line display mode
Vehicle width guide line
These lines indicate a guide path when the vehicle is being backed straight up. The displayed width is wider than the actual vehicle width.
These lines align with the estimated course lines when the steering wheel is straight.
Estimated course lines
These lines show an estimated course when the steering wheel is turned.
Distance guide line
These lines move, together with the estima ted course lines, in sync with the steer- ing wheel and show points approximately 0.5 m (1.5 ft.) (red) and 1 m (3 ft.) (yel-low) from the center of the edge of the bumper.
Distance guide line
This line indicates a point approximately 0.5 m (1.5 ft.) (blue) from the edge of the
bumper.
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2904-5. Using the driving support systems
RC300h_EE(OM24740E)
■Parking operation
When parking in a space which is in the reverse direction to the space
described in the procedure below, the steering directions will be reversed.
Shift the shift lever to R.
Turn the steering wheel so that
the estimated course lines are
within the parking space, and
back up slowly.
Parking space
Estimated course lines
When the rear position of the
vehicle has entered the parking
space, turn the steering wheel so
that the vehicle width guide lines
are within the left and right divid-
ing lines of the parking space.
Vehicle width guide line
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2914-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
Once the vehicle width guide lines and the parking space lines are parallel,
straighten the steering wheel and back up slowly until the vehicle has com-
pletely entered the parking space.
Stop the vehicle in an appropriate place, and finish parking.
■Screen description
Parking assist guide line display mode
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5
Vehicle width guide lines
These lines indicate a guide path when the vehicle is being backed straight
up. The displayed width is wider than the actual vehicle width.
Parking assist guide lines
These lines indicate the path of the sm allest turn possible behind the vehi-
cle.
These lines also indicate the approximate position of the steering wheel
when parking.
Distance guide line
This line (red) indicates a point approximately 0.5 m (1.5 ft.) behind the
rear bumper of your vehicle.
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2924-5. Using the driving support systems
RC300h_EE(OM24740E)
■Parking operation
When parking in a space which is in the reverse direction to the space
described in the procedure below, the steering directions will be reversed.
Shift the shift lever to R.
Back up until the parking assist
guide line meets the edge of the
left-hand dividing line of the park-
ing space.
Parking assist guide line
Parking space dividing line
Turn the steering wheel all the way to the right, and back up slowly.
Once the vehicle is parallel with the parking space, straighten the steering
wheel and back up slowly until the vehicle has completely entered the
parking space.
Stop the vehicle in an appropriate place, and finish parking.
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2984-5. Using the driving support systems
RC300h_EE(OM24740E)
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