2017 LEXUS RX300H Head

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

2784-5. Using the driving support systems
RC300h_EE(OM24740E)
NOTICE
■To prevent damage to or incorrect operation of the LDA system
●Do not modify the headlights or attach stickers to the surface of the lights.
●Do not modify the suspension.
If any suspension parts need to be replac ed, contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
●Do not install or place anything on the h ood or the grille. Also, do not install a grille
guard (bull bars, kangaroo bar etc.).
●If your windshield needs repairs, contact any authorized Lexus dealer or repairer, or another duly qualified an d equipped professional.
■Camera sensor
Observe the following to ensure that the LDA system functions correctly.
●Keep the windshield clean at all times.
Performance could be affected if the windshie ld is dirty, or if raindrops, condensation or ice are adhering to the windshield.
●Do not spill liquid onto the camera sensor.
●Do not attach window tinting to the windshield.
●Do not install an antenna in front of the camera lens.
●If the area of the windshield in front of the camera sensor is fogged up, use the wind-
shield defogger to remove the fog. When it is cold, setting the heater to blow air to the feet only may cause the area ofthe windshield in front of the camera sensor to fog up. This will have a negative effect
on the images.
●Do not scratch the camera lens, or let it get dirty. When cleaning the inside of the windshield, be careful not to get any glass cleaner
etc. on the lens. Also, do not touch the lens. For lens repair, contact any authorized Lexus dealer or repairer, or another duly qual- ified and equipped professional.
●Do not change the installation position or direction of the camera sensor or remove it. The direction of the camera sensor is precisely adjusted.
●Do not subject the camera sensor to strong impact or force, and do not disassemble
the camera sensor.
●If the windshield needs to be replaced, contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
●Do not attach a sticker or other items to thewindshield near the camera sensor.

2974-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
■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.

3124-5. Using the driving support systems
RC300h_EE(OM24740E)
Enabled
Disabled
The pre-crash safety system warning
light comes on when pre-crash safety system is disabled.
The radar sensor detects vehicles or
other obstacles on or near the road
ahead and determines whether a colli-
sion is imminent based on the position,
speed, and heading of the obstacles.
Disabling pre-crash safety system
1
2
Radar sensor

3134-5. Using the driving support systems
4
Driving
RC300h_EE(OM24740E)
■The pre-crash safety system is operational when
The pre-crash safety system is enable d and the following conditions are met:
●Pre-crash warning:
• Vehicle speed is greater than about 15 km/h (10 mph).
• The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 15 km/h (10 mph).
●Pre-crash brake assist:
• The VSC system is not disabled. • Vehicle speed is greater than about 30 km/h (19 mph).
• The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 30 km/h (19 mph).• The brake pedal is depressed.
●Pre-crash braking:
• The VSC system is not disabled.
• Vehicle speed is greater than about 15 km/h (10 mph). • The speed at which your vehicle is approaching the obstacle or the vehicle runningahead of you is greater than about 15 km/h (10 mph).
●Suspension control:
• Vehicle speed is greater than about 5 km/h (4 mph).
• The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 30 km/h (19 mph).
■Conditions that may trigger the system even if there is no danger of a collision
In any of the following situations where the frontal area of the radar sensor is interrupted, the radar sensor may detect possibility of a frontal collision and the system may be acti- vated.
●When passing by an oncoming vehicle in a curve or a turn to the right or the left
●When rapidly approaching an obstacle ahead (e.g. preceding vehicle, toll gate barrier, etc.)
●When there is a structural object (billboard, low ceiling, fluorescent light, etc.) above the uphill road ahead
●When driving on a narrow road or throug h under a low overhead structure (bridge,
tunnel, fly-under, etc.)
●When driving on an uneven road surface
●When there is a metal object, bump, or protrusion on the road surface
●When vehicle’s front part is raised or lowered depending on loading conditions
●When the direction of radar sensor is misaligned by strong impact applied on an area
around the radar sensor, etc.
●When there is an obstacle (guard rail, etc.) by the roadside at the entrance to a curve
●When the front of your vehicle is pointing upwards (caused by putting a heavy load in
the trunk etc.)
When the system is activated in the situations described above, there is also a possibility that the brakes may be applied with a force greater than normal.

3384-6. Driving tips
RC300h_EE(OM24740E)
Accelerate the vehicle slowly, keep a safe distance between you and the vehicle
ahead, and drive at a reduced speed suitable to road conditions.
●Park the vehicle and move the shift lever to P without setting the parking
brake. The parking brake may freeze up, preventing it from being released. If
the vehicle is parked without setting the parking brake, make sure to block the
wheels.
Failure to do so may be dangerous because it may cause the vehicle to move
unexpectedly, possibly leading to an accident.
●If the vehicle is parked without setting the parking brake, confirm that the shift
lever cannot be moved out of P*.
*: The shift lever will be locked if it is attempted to be shifted from P to any other posi-
tion without depressing the brake pedal. If the shift lever can be shifted from P,
there may be a problem with the shift lock system. Have the vehicle inspected by
your authorized Lexus retailer or Lexu s authorized repairer, or any reliable
repairer immediately.
Except for vehicles with 19- inch tires
Use the correct tire chain size when mounting the tire chains.
Chain size is regulated for each tire size.
Side chain
(3 mm [0.12 in.] in diameter)
Cross chain
(4 mm [0.16 in.] in diameter)
Vehicles with 19- inch tires
Tire chains cannot be mounted.
Snow tires should be used instead.
When driving the vehicle
When parking the vehicle
Selecting tire chains
1
2

3585-2. Setup
RC300h_EE(OM24740E)
Go to “Display”:  “Display”
Turn off screen.
Adjust screen quality.
Adjust screen quality of the Lexus
parking assist monitor camera. (if
equipped)
Change to day mode.
This setting turns the screen off. To turn it on, press any button such as or .
If a screen off image has been se t, the set image will be displayed.
When the headlights are turned on, the screen dims.
However, the screen can be switched to day mode by selecting “Day mode”.
The screen will stay in day mode when the headlights are turned on until “Day mode”
is selected again.
Display settings
Settings are available for adjusting the contrast and brightness of the screen.
The display can also be turned off.
Screen for display settings
1
2
3
4
Screen off
Day mode

4205-11. Bluetooth®
RC300h_EE(OM24740E)
■Compatible models
The Bluetooth® audio system supports portable audio players with the following specifi- cations
●Bluetooth® specifications: Ver. 2.0, or higher (Recommend ed: Ver. 3.0+EDR or higher)
●Profiles:
• A2DP (Advanced Audio Distribution Profile) Ver. 1.0, or higher (Recommended: Ver. 1.2 or higher) This is a profile to transmit stereo audio or high quality sound to the audio system.
• AVRCP (Audio/Video Remote Control Profile) Ver. 1.0 or higher (Recommended: Ver. 1.4 or higher) This is a profile to allow remote control of the A/V equipment.
However, please note that some functions may be limited depending on the type of por- table audio player connected.
The hands-free system supports cellular ph ones with the following specifications.
●Bluetooth® specification: Ver. 2.0 or higher (Recommended: Ver. 3.0+EDR or higher)
●Profiles:
• HFP (Hands Free Profile) Ver. 1.0 or higher (Recommended: Ver. 1.6 or higher) This is a profile to allow hands-free phone calls using a cellular phone or head set. It has outgoing and incoming call functions.
• OPP (Object Push Profile) Ver. 1.1 or higher (Recommended: Ver. 1.1) This is a profile to transfer phonebook data. When a Bluetooth® compatible cellular phone has both PBAP and OPP, OPP cannot be used.
• PBAP (Phone Book Access Profile) Ver. 1.0 or higher (Recommended: Ver. 1.1) This is a profile to tr ansfer phonebook data.
• MAP (Message Access Profile) Ver.1.0 or higher This is a profile to using phone message.If the cellular phone does not support HFP, you cannot register it with the hands-free sys-
tem. OPP, PBAP or MAP services must be selected individually.
■Reconnecting the portable audio player
If the portable audio player is disconnect ed due to poor reception when the power
switch is in ACCESSORY or ON mode, the system automatically reconnects the porta- ble audio player.
If you have switched off the portable audio player yourself, follow the instructions below
to reconnect:
●Select the portable audio player again
●Enter the portable audio player
■When you sell your car
Be sure to delete your personal data. ( P. 356)