2014 LEXUS RX270 engine

254
2-4. Using other driving systems
RX350/270_EE
■Sensor detection information
●Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect an obstacle. Particular instances where this
may occur are listed below.
• There is dirt, snow or ice on a sensor.
• A sensor is frozen.
• A sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines,
air brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• A sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or radio antenna.
• Towing eyelets are installed.
• A bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or right-angled curb.
• In harsh sunlight or intense cold weather.
• A non-genuine Lexus suspension (lowered suspension, etc.) is installed.
In addition to the examples above, there are instances in which, because of their
shapes, signs and other objects may be judged by a sensor to be closer than they
are.
●The shape of the obstacle may prevent a sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your
vehicle
■If a message is displayed
→P. 5 5 2
■Customization
Settings (e.g. buzzer volume) can be changed.
(Customizable features →P. 6 2 2 )
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259
2-4. Using other driving systems
2
When driving
RX350/270_EE
■Operating conditions
After stopping the engine, the vehicle will remain lowered for a maximum of 60
seconds.
●Height selector switch (driver's side instrument panel)
• While the engine is running, any vehicle height mode can be selected.
• Luggage mode can only be selected when the shift lever is in P position.
●Height selector switch (luggage compartment)
• When the engine is running and the shift lever is in the P position, any vehicle
height other than “LO” mode can be selected.
• When the “ENGINE START STOP” switch is turned off, the vehicle height
can only be lowered (only the “∨” side of the switch can be operated).
This switch can only be operated when the back door is open.
●Height control off switch
When the vehicle is stopped with the “ENGINE START STOP” switch in IGNI-
TION ON mode, vehicle height control can be disabled/re-enabled.
■When changing vehicle height modes
Before operating the height selector switch to raise/lower the vehicle height,
ensure that there are no objects in the surrounding area that could damage the
vehicle.
■When “N” mode is selected
During high speed driving, the vehicle height will automatically change to that of
“LO” mode.
■When “HI” mode is selected
The vehicle height will change to that of “N” mode when vehicle speed reaches 50
km/h (31 mph) or when vehicle speed has exceeded 30 km/h (19 mph) for approx-
imately 10 seconds. Even if vehicle speed is reduced below 30 km/h (19 mph), the
vehicle height will not automatically return to “HI” mode.
■When “LO” mode is selected
The vehicle height will change to that of “N” mode when the engine is restarted.
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261
2-4. Using other driving systems
2
When driving
RX350/270_EE
CAUTION
■The electronically modulated air suspension must be turned off when
The electronically modulated air suspension must be turned off in the following situ-
ations as vehicle height may change due to the automatic leveling function, and, you
may catch part of your body in the vehicle and cause an accident, resulting in death
or serious injury.
●Any of the wheels is stuck in a ditch.
●It is necessary to jack up the vehicle.
●It is necessary to tow the vehicle with part of it lifted.
●When connecting/disconnecting a trailer
For safety, stop the engine if necessary.
■“HI” mode
●“HI” mode should only be used when driving on rough roads, for example when
driving off-road. Because the vehicle's center of gravity will become higher when
in the mode, the vehicle may become unstable when turning abruptly and cause
an accident, resulting in death or serious injury.
●Do not select “HI” mode when loading cargo on the roof luggage carrier.
Because the vehicle's center of gravity will become higher when in the mode, the
vehicle may become unstable when turning abruptly, and cause an accident,
resulting in death or serious injury.
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262
2-4. Using other driving systems
RX350/270_EE
NOTICE
■Do not select “LO” mode when driving on bumpy roads.
If the underbody of the vehicle touches a rugged road surface, the vehicle may be
damaged. Also be careful when driving while the vehicle is automatically returning
from luggage or “LO” mode to “N” mode.
■Automatic return to “N” mode
In the following situations, the height of the vehicle will automatically increase. Be
careful in any place where overhead space is limited.
●The vehicle begins to move while still in luggage mode.
●The engine is restarted while the vehicle is in “LO” mode.
■Vehicle height while parked
If the temperature changes or the vehicle is parked for a long time, the vehicle
height may decrease.
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264
2-4. Using other driving systems
RX350/270_EE
■The rear view monitor system can be operated when
The shift lever is in R, the “ENGINE START STOP” switch is in IGNITION ON
mode.
■Changing display modes
The rear view monitor display mode can be changed while the screen is on.
●To temporarily disable the rear view monitor system
●To constantly disable the rear view monitor system
●To re-enable the rear view monitor system
Press the “AUTO” button. The indicator will turn green.Press the “AUTO” button.
The indicator will turn amber.
The system will be re-enabled once the
“ENGINE START STOP” switch is turned
off and then turned to IGNITION ON
mode.
Press and hold the “AUTO” button for 12 to
15 seconds.
The screen will turn off and on after 6 sec-
onds. Keep pressing the button until the
screen turns back off. The indicator will
flash amber.
The system will not automatically turn on
again after the “ENGINE START STOP”
switch is off and then turned to IGNITION
ON mode.
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272
2-4. Using other driving systems
RX350/270_EE
When the VSC/TRC systems are operating
If the vehicle is in danger of slip-
ping or if any of the drive wheels
spins, the slip indicator flashes to
indicate that the VSC/TRC sys-
tems are operating.
■VDIM (Vehicle Dynamics Integrated Management) (if equipped)
Provides integrated control of the ABS, brake assist, TRC, VSC, hill-start
assist control and EPS systems
Helps to maintain vehicle stability when swerving on slippery road sur-
faces by controlling the brakes and engine output
■PCS (Pre-Crash Safety system) (if equipped)
→P. 2 8 0
■Emergency brake signal
In order to reduce the risk of a rear-end collision, when the brakes are
applied suddenly the stop lights will automatically flash to alert the vehicle
behind
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273
2-4. Using other driving systems
2
When driving
RX350/270_EE
Disabling the TRC/VSC systems
If the vehicle gets stuck in fresh snow or mud, the TRC/VSC systems may
reduce power from the engine to the wheels. You may need to turn the
system off to enable you to rock the vehicle in order to free it.
■Turning off the TRC system only
To turn the TRC system off, quickly
press and release the switch.
A message will be shown on the
multi-information display.
Press the switch again to turn the
system back on.
■Turning off both TRC and VSC systems
To turn the TRC and VSC systems
off, press and hold the switch for 3
seconds or more while the vehicle
is stopped.
A message will be shown on the
multi- information display and VSC
off indicator light will come on.
Press the switch again to turn the
systems back on.
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274
2-4. Using other driving systems
RX350/270_EE
■When the message is displayed on the multi-information display showing that
TRC has been disabled even if the VSC off switch has not been pressed
TRC and hill-start assist control cannot be operated. Contact your any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
■Sounds and vibrations caused by the ABS, VSC, TRC and brake assist
●A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. 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 operat-
ing. 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.
■Reactivation of the TRC/VSC systems
Turning off the engine after turning off the TRC/VSC systems will automatically
reactivate them.
■Reactivation of the TRC system linked to vehicle speed
When only the TRC system is turned off, the TRC system will turn on when vehicle
speed increases. However, when both TRC and VSC systems are turned off, the
systems will not turn on even when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from over-
heating 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 engine off. The EPS system should
return to normal within 10 minutes.
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