engine Lexus IS250 2011 Workshop Manual

151
2
When driving
IS350/250_U
2-2. Instrument cluster
Gauges and meters
The units used on the speedometer and the tachometer gauge display may
differ depending on the model/type.

The following gauges, meters and display illuminate when the
“ENGINE START STOP” switch is in IGNITION ON mode.Speedometer
Displays the vehicle speed.
Multi-information display
→ P. 1 6 0
Tachometer
Displays the engine speed in revolutions per minute.
Tacho indicator
When the set engine speed is reached, this ring-shaped indicator comes
on in yellow. The indicator comes on in red when the engine speed
reaches a dangerous range.
Engine coolant temperature gauge
Displays the engine coolant temperature.

154
2-2. Instrument cluster
IS350/250_U■
Changing the indicator setting
The satellite switch can be used to change the set speed at which the
yellow speed or tacho indicator ring comes on.
The setting can be made only when the “ENGINE START STOP”
switch is in IGNITION ON mode and the vehicle is stopped.
Push “
<” or “>” to select the speed or tacho indicator set mode. ( ) Turn
the speed or tacho indicator to “ OFF” and then “ON” by pushing the
“ON/OFF” button. ( )
After one second, the mode enters
the indicator setting mode.
The speedometer or tachometer
needle moves to the previously set
speed.
STEP1

155
2-2. Instrument cluster
2
When driving
IS350/250_UPush “
<” or “>” within 6 seconds of the speedometer or tachometer nee-
dle moving to change the setting of the desired speed, then turn the indi-
cator mode to “ON” by pushing the “ON/OFF” button.
Pushing and holding the button changes values at a faster rate.
If the satellite switch is not operated for some time, the multi-information dis-
play returns to its previously displayed content.
The yellow indicator is displayed to indicate that the desired speed has
been set.
STEP2
■Speed indicator display conditions and vehicle speed setting range
Vehicle speed setting range: Approximately 30 to 100 mph (approximately 50 to 160 km/h)
When the maximum speed is selected, the speed indicator comes on only in red.
■Tacho indicator display conditions and engine speed setting range
Engine rpm setting range: Approximately 2000 to 6500 rpm (r/min)
When the maximum rpm is selected, the tacho indicator comes on only in red.

156
2-2. Instrument cluster
IS350/250_U
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the temperature gauge is in the red zone (H). In
this case, immediately stop the vehicle in a safe place, and check the engine after
it has cooled completely. ( →P. 5 0 1 )

159
2-2. Instrument cluster
2
When driving
IS350/250_U
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on
when you start the engine, this could mean that these systems are not available to
help protect you in an accident, which could result in death or serious injury. Have
the vehicle inspected by your Lexus dealer immediately if this occurs.
*1: These lights turn on when the “ENGINE START STOP” switch isturned to IGNITION ON mode to indicate that a system check is
being performed. They will turn off after the engine is started, or after a
few seconds. There may be a malfunction in a system if a light does not
come 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.
■ Warning lights
Warning lights inform the driver of malfunctions in any of the vehi-
cle’s systems. (→ P. 4 6 1 )
*: These lights turn on when the “ENGINE START STOP” switch is turned
to IGNITION ON mode to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few sec-
onds. There may be a malfunction in a system if a light does not come
on, or if the lights do not turn off. Have the vehicle inspected by your
Lexus dealer.
(U.S.A.)(Canada)(U.S.A.)(Canada)
(U.S.A.)(Canada)(for
driver)(for front
passen-
ger)
******
******

163
2-2. Instrument cluster
2
When driving
IS350/250_U■
Average vehicle speed
■ Gear position display
(vehicles with an automatic transmission only)
Displays the average vehicle speed since the engine
was started or the function was reset.
The function can be reset by pushing the “DISP” switch
for longer than one second when the average vehicle
speed is displayed.
Indicates the current gear, and the range of gears
that is available when the shift lever is in the D or S
position. The gear range is shown by the number of
dots ( •) and the current gear is shown as a number.
The transmission automatically selects the gears
within the driver selected gear range.
In the illustration to the left, a range of 6 available gears
(1 through 6) has been selected by the driver. (The shift
lever is in the D or S position with 6 ranges enabled.) It is
possible for the transmission to automatically select
between all 6 of the gears. In this case, the transmission
has selected third gear.
■System check display
After switching the “ENGINE START STOP” switch to IGNITION ON mode,
“CHECK” is displayed while system operation is checked. When the system check
is complete, “COMPLETED” is displayed before returning to the normal screen.
■Outside temperature display
In the following situations, the correct outside temperature may not be displayed, or
the display may take longer than normal to change.
●When stopped, or driving at low speeds (less than 12 mph [20 km/h])
●When the outside temperature has changed suddenly (at the entrance/exit of a
garage, tunnel, etc.)

164
2-2. Instrument cluster
IS350/250_U
CAUTION
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal informa-
tion display. At extremely low temperatures, the information display monitor may
respond slowly, and display changes may be delayed.
For example, there is a lag between the driver's shifting and the new gear number
appearing on the display. This lag could cause the driver to downshift again, causing
rapid and excessive engine braking and possibly an accident resulting in personal
death or injury.

165
2
When driving
IS350/250_U
2-3. Operating the lights and windshield wipers
Headlight switch
The headlights can be operated manually or automatically.
The daytime running
lights turn on
The side marker, park-
ing (vehicles with
halogen headlights),
daytime running
lights, tail, license
plate and instrument
panel lights turn on.
The headlights and all
lights listed above
(except daytime run-
ning lights) turn on.
The headlights, park-
ing lights, daytime
running lights and
other lights turn on
and off automatically.
(When the “ENGINE
START STOP” switch
is in IGNITION ON
mode)
U.S.A.Canada

166
2-3. Operating the lights and windshield wipers
IS350/250_U
Turning on the high beam headlightsWith the headlights on, push the
lever forward to turn on the high
beams.
Pull the lever back to the center
position to turn the high beams off.
Pull the lever toward you to turn
on the high beams.
Release to turn them off. You can
flash the high beams with the head-
lights on or off.
■Daytime running light system
●Vehicles with halogen headlights: to make your vehicle more visible to other
drivers, the headlights turn on automatically (at a reduced intensity) whenever
the engine is started and the parking brake is released. Daytime running lights
are not designed for use at night.
Vehicles with discharge headlights: to make your vehicle more visible to other
drivers, the parking lights turn on automatically (at a increased intensity) when-
ever the engine is started and the parking brake is released. Daytime running
lights are not designed for use at night.
●Compared to turning on the headlights, the daytime running light system offers
greater durability and consumes less electricity, so it can help improve fuel
economy.
■Headlight control sensorThe sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the wind-
shield.
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.

167
2-3. Operating the lights and windshield wipers
2
When driving
IS350/250_U
■Automatic light off system
●When the headlights come on: The headlights and tail lights turn off 30 seconds
after a door is opened and closed if the “ENGINE START STOP” switch has
been switched to ACCESSORY mode or turned OFF. (The lights turn off
immediately if on the key is pressed after all doors are locked.)
●When only the tail lights come on: The tail lights turn off automatically if the
“ENGINE START STOP” switch is switched to ACCESSORY mode or turned
OFF and driver’s door is opened.
To turn the lights on again, switch to IGNITION ON mode, or turn the light switch
off once and then back to or
.
■Automatic headlight leveling system (vehicles with discharge headlights)
The level of the headlights is automatically adjusted according to the number of
passengers and the loading condition of the vehicle to ensure that the headlights do
not interfere with other road users.
■Customization that can be configured at Lexus dealer
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features →P. 5 4 0 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.