2014 LEXUS RX270 suspension

258
2-4. Using other driving systems
RX350/270_EELuggage compartment
Higher
Pressing this switch while the vehi-
cle is in luggage mode changes the
vehicle height to that of “N” mode.
Lower
Pressing this switch while the vehi-
cle is in “N” mode changes the
vehicle height to that of luggage
mode, not “LO” mode.
■Electronically modulated air suspension indicator
The indicator for the selected
mode will come on.
The indicator will flash while the
vehicle height is being changed to
the height of the selected mode.
Disabling the height control
Press the height control off switch
while the vehicle is stopped. A
message will appear on the multi-
information display, and vehicle
height will be fixed in the current
mode.
When vehicle speed exceeds 30
km/h (19 mph), the electronically
modulated air suspension is re-
enabled automatically.
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260
2-4. Using other driving systems
RX350/270_EE
■When luggage mode is selected
If the vehicle begins to move while still in luggage mode, the vehicle will automati-
cally change to “N” mode once speed exceeds 8 km/h (5 mph). Even if vehicle
speed is reduced below 8 km/h (5 mph), the vehicle height will not automatically
return to luggage mode.
■Operating sound of the air suspension
When the vehicle height is lowered, such as when entering and loading the vehicle,
or when the height selector switch is operated, the sound of the compressor oper-
ating or the mode changing may be heard. This does not indicate a malfunction.
■Automatic leveling function
Regardless of the number of occupants and the luggage load, vehicle height in any
mode is always adjusted to a fixed height by the automatic leveling function.
■Vehicle height mode change time
●If the height control is operated continuously to lower the vehicle, the suspen-
sion air tank may become full, causing operation of the vehicle height lowering
control to become slow.
●To protect the compressor, the system will only raise the vehicle for a total of
100 consecutive seconds. If it takes longer than this to reach the selected
height, operation may be suspended shortly and then restart. However, it may
not be possible to change the vehicle's height mode at this time.
■The electronically modulated air suspension will not operate when
The vehicle height control may not be able to change modes when the vehicle runs
over a high curb or other rugged surfaces where the suspension is stretched.
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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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276
2-4. Using other driving systems
RX350/270_EE
CAUTION
■When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause
an accident, resulting in death or serious injury. Exercise particular care when the
indicator light flashes.
■When the TRC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As
these are the systems to help ensure vehicle stability and driving force, do not turn
the TRC/VSC systems off unless necessary.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
The ABS and VSC systems will not function correctly if different tires are installed
on the vehicle.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional, for further information when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the driv-
ing assist systems, and may cause a system malfunction.
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291
2-5. Driving information
2
When driving
RX350/270_EE●Stay on established roads. When conditions are wet, driving tech-
niques should be changed or travel delayed to prevent damage to
roads.
CAUTION
■Off-road driving precautions
Always observe the following precautions to minimize the risk of death or serious
injury or damage to your vehicle:
●Drive carefully when off the road. Do not take unnecessary risks by driving in
dangerous places.
●Do not grip the steering wheel spokes when driving off-road. A bad bump could
jerk the wheel and injure your hands. Keep both hands and especially your
thumbs on the outside of the rim.
●Always check your brakes for effectiveness immediately after driving in sand,
mud, water or snow.
●After driving through tall grass, mud, rock, sand, water, etc., check that there is no
grass, bush, paper, rags, stone, sand, etc. adhering or trapped to the underbody.
Clear off any such matter from the underbody. If the vehicle is used with these
materials trapped or adhering to the underbody, a breakdown or fire could occur.
●When driving off-road or in rugged terrain, do not drive at excessive speeds,
jump, make sharp turns, strike objects, etc. This may cause loss of control or vehi-
cle rollover causing death or serious injury. You are also risking expensive dam-
age to your vehicle’s suspension and chassis.
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303
2-5. Driving information
2
When driving
RX350/270_EE
Installation positions for the towing hitch/bracket and hitch ball
Vehicles without electronically modulated air suspension
528 mm (20.8 in.)
567.4 mm (22.3 in.)
1107 mm (43.6 in.)
352 mm (13.9 in.)
363 mm (14.3 in.)
461 mm (18.1 in.)
467 mm (18.4 in.)
596 mm (23.5 in.)
25.5 mm (1.0 in.)
59 mm (2.3 in.)
81 mm (3.2 in.)
235/60R18 tires
359 mm (14.1 in.)
235/55R19 tires
357 mm (14.1 in.)
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304
2-5. Driving information
RX350/270_EEVehicles with electronically modulated air suspension
530 mm (20.9 in.)
567.4 mm (22.3 in.)
1107 mm (43.6 in.)
390 mm (15.4 in.)
400 mm (15.7 in.)
500 mm (19.7 in.)
505 mm (19.9 in.)
635 mm (25.0 in.)
5 mm (0.20 in.)
59 mm (2.3 in.)
81 mm (3.2 in.)
235/60R18 tires
“LO” mode:
416 mm (16.4 in.)
“N” mode:
415 mm (16.3 in.)
“HI” mode:
445 mm (17.5 in.)
235/55R19 tires
“LO” mode:
418 mm (16.5 in.)
“N” mode:
418 mm (16.5 in.)
“HI” mode:
448 mm (17.6 in.)
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305
2-5. Driving information
2
When driving
RX350/270_EE
■When connecting and disconnecting a trailer (vehicles with electrically modu-
lated air suspension)
●Connecting
Set the electronically modulated air suspension to LO mode.
Press the height control off switch to turn off the electronically modulated
air suspension.
Turn off the “ENGINE START STOP” switch
Connect the trailer.
Turn on the “ENGINE START STOP” switch
Press the height control off switch again to turn on the electronically mod-
ulated air suspension.
Set the electronically modulated air suspension to N mode.
●Disconnecting
Set the electronically modulated air suspension to LO mode.
Press the height control off switch to turn off the electronically modulated
air suspension.
Turn off the “ENGINE START STOP” switch
Set the supporting leg of the trailer on the ground and raise the hitch by
100 mm (4 in.)
Turn on the “ENGINE START STOP” switch
Press the height control off switch again to turn on the electronically mod-
ulated air suspension.
Wait until vehicle height is stabilized.
Make sure the hitch is disconnected. If the hitch does not disconnect, raise the hitch
higher and repeat steps 2 through 7.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
STEP7
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
STEP7
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