light Lexus HS250h 2012 Workshop Manual

149
2-1. Driving procedures
2
When driving
HS250h_U_75050U
CAUTION
■Exhaust gases
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Inhaling exhaust gases may lead to death or a serious health hazard.
●If the vehicle is in a poorly ventilated area, stop the hybrid system. In a closed
area, such as a garage, exhaust gases may collect and enter the vehicle. This may
lead to death or a serious health hazard.
●The exhaust system should be checked occasionally. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be sure to
have the vehicle inspected and repaired by your Lexus dealer. Failure to do so
may allow exhaust gases to enter the vehicle, resulting in death or a serious health
hazard.
■When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire due to
hybrid system overheating. Additionally, if the vehicle is parked in a poorly venti-
lated area, exhaust gases may collect and enter the vehicle, leading to death or a
serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side
of the vehicle to brake differently than the other side. Also, the parking brake may
not securely hold the vehicle.
●If the power brake assist function does not operate, do not follow other vehicles
closely and avoid downhill or sharp turns that require braking.
In this case, braking is still possible, but it will require more force on the pedal than
usual. Braking distance may also increase.
●The brake system consists of 2 individual hydraulic systems; if one of the systems
fails, the others will still operate. In this case, the brake pedal should be depressed
more firmly than usual and the braking distance will increase. If this happens, do
not continue to drive the vehicle. If the brake system warning light (red indicator)
comes on while driving, immediately stop the vehicle in a safe place and contact
your Lexus dealer.

156
2-1. Driving procedures
HS250h_U_75050U
CAUTION
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the hybrid system under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle,
press and hold the “POWER” switch for more than 3 seconds.
However, do not touch the “POWER” switch while driving except in an emergency.
Turning the hybrid system off while driving will not cause loss of steering or braking
control, but the power assist to these systems will be lost. This will make it more diffi-
cult to steer and brake, so you should pull over and stop the vehicle as soon as it is
safe to do so.
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the “POWER” switch in ACCESSORY or ON mode for long peri-
ods of time without the hybrid system on.
●If the hybrid system is off, but the indicator on the “POWER” switch is illuminated,
this indicates that the “POWER” switch is still turned on. When exiting the vehi-
cle, always check that the “POWER” switch is off.
■When starting the hybrid system
Do not depress the accelerator pedal unnecessarily.
■Symptoms indicating a malfunction with the “POWER” switch
If the “POWER” switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact your Lexus
dealer immediately.

166
2-1. Driving procedures
HS250h_U_75050U
Turn signal lever
■Turn signals can be operated when
The “POWER” switch is in ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
The turn signal lever can be used to show the following intention of the
driver: Right turn
Left turn
Lane change to the right
(push and hold the lever part-
way)
The right hand signals will flash
until you release the lever.
Lane change to the left (push
and hold the lever partway)
The left hand signals will flash
until you release the lever.

170
2-2. Instrument cluster
HS250h_U_75050U
Changing the displaySwitches between odometer and
trip meter displays. When the trip
meter is displayed, pressing and
holding the button will reset the
trip meter.
Instrument panel light controlThe brightness of the instrument panel lights can be adjusted. Brighter
Darker
When the brightness is adjusted to
the dimmest level, the instrument
panel light will go off.
Odometer and trip meter display
Odometer: Displays the total distance that the vehicle has beendriven
Trip meter: Displays the distance the vehicle has been driven since the meter was last reset. Trip meters “A” and “B” can be
used to record and display different distances indepen-
dently.
Multi-information display
→ P. 1 7 7

171
2-2. Instrument cluster
2
When driving
HS250h_U_75050U
■Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can be
adjusted. However, when the surroundings are bright (daytime, etc.) turning on the
tail lights will not change the instrument panel brightness.
■Limitations of brightness adjustment
The brightness of the instrument panel lights is automatically adjusted based on the
light sensor detecting how bright the surroundings are. However, if the instrument
panel brightness has been manually set to the brightest setting, the automatic
adjustment will not be performed.
■Hybrid System Indicator
●By keeping the indicator needle within Eco area, Eco-friendly driving can be
achieved.
Hybrid Eco area shows that gasoline engine power is not being used very often.*
1
●Charge area indicates regeneration*2 status. Regenerated energy will be used
to charge the hybrid battery.
*
1: The gasoline engine will automatically stop and restart under various condi- tions.
*
2: When used in this manual, “regeneration” refers to the conversion of energy created by the movement of the vehicle into electrical energy.
■Customization
Settings (e.g. Sensitivity of the ambient light sensor used for dimming the meter
lights) can be changed. (Customizable features →P. 5 8 4 )
Eco area
Eco Driving Indicator Light turns on
Hybrid Eco area
Eco Driving Indicator Light turns on
Charge area
Eco Driving Indicator Light turns on
Powe r a re a
Eco Driving Indicator Light turns off

172
2-2. Instrument cluster
HS250h_U_75050U
NOTICE
■To prevent damage to the hybrid system and its components
A high engine coolant temperature warning light (→P. 502) is installed instead of
an engine coolant temperature gauge. If the high engine coolant temperature
warning light illuminates or flashes, the vehicle may be overheating. Immediately
stop the vehicle in a safe area ( →P. 5 5 2 ) .

173
2-2. Instrument cluster
2
When driving
HS250h_U_75050U
Indicators and warning lights
The indicator and warning lights on the instrument cluster and center
panel inform the driver of the status of the vehicle’s various systems.
Instrument cluster
Center panel (without a navigation system)
Center panel (with a navigation system)

174
2-2. Instrument cluster
HS250h_U_75050U
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Turn signal indicator
(→ P. 166)“ECO MODE” indicator
(→ P. 1 6 2 )
(U.S.A.)
Headlight indicator
(→ P. 191)“PWR MODE” indicator
(→ P. 1 6 2 )
(Canada)
Tail light indicator
(→ P. 1 9 1 )Cruise control indicator
(→ P. 212, 216)
Headlight high beam
indicator ( →P. 1 9 3 )
(if equipped)
Radar cruise control
indicator (→ P. 2 1 6 )
(if equipped)
Automatic High Beam
indicator (→P. 1 9 6 )
(if equipped)
“LKA” indicator
(→ P. 2 3 1 )
Front fog light indicator
(→ P. 202)“SET” indicator
(→ P. 212, 216)
“READY” indicator
(→ P. 1 5 2 )
(if equipped)
Intuitive parking assist
indicator (Refer to
“Navigation System
Owner’s Manual”.)
EV drive mode indicator
(→ P. 1 5 7 )
(if equipped)
“AFS OFF” indicator
(→ P. 1 9 3 )
Eco Driving Indicator
Light ( →P. 1 4 4 )Slip indicator
(→ P. 2 3 9 , 2 4 3 )
*1
*1*1, 2

175
2-2. Instrument cluster
2
When driving
HS250h_U_75050U
*1: These lights turn on when the “POWER” switch is turned to the ON modeto indicate that a system check is being performed. They will turn off after
the hybrid system is on, or after a few seconds. There may be a malfunction
in a system if a light does not turn on, or if the lights do not turn off. Have
the vehicle inspected by your Lexus dealer.
*2:The light flashes to indicate that the system is operating.
*3:The light turns on when a part of the system is turned off. The light flashesquickly and “BRAKE!” appear on the multi-information display and head-
up display (if equipped) to indicate that the system is operating.
VSC OFF indicator
( → P. 2 4 0 ) Shift position indicators
(→ P. 1 6 0 )
(if equipped)
“PCS” warning
(→ P. 2 4 6 )SRS airbag on-off
indicator ( →P. 121)
*1
*1, 3*1

176
2-2. Instrument cluster
HS250h_U_75050U
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS airbag warning light not
come on when you start the hybrid system, this could mean that these systems are
not available to help protect you in an accident, which could result in death or seri-
ous injury. Have the vehicle inspected by your Lexus dealer immediately if this
occurs.
■Warning lights
Warning lights inform the driver of malfunctions in any of the vehi-
cle’s systems. ( →P. 502)
*1: These lights turn on when the “POWER” switch is turned to ON mode
to indicate that a system check is being performed. They will turn off
after the hybrid system is on, or after a few seconds. There may be a
malfunction in a system if a light does not turn on, or if the lights do not
turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
(U.S.A.)(Canada)(U.S.A.)(Canada)
(U.S.A.)(Canada)(if equipped)
(if equipped)(if equipped)(if equipped)
(if equipped)(for driver)(for front
passenger)
*1*1*1*1*1*1*1
*1*1*1*1*1, 2
*1*1, 2*2*2*2*1*1
*2