engine Lexus IS350 2006 Scheduled Maintenance Guide / LEXUS 2006 IS350/250 FROM MAY 2006 PROD. (OM53619U) Service Manual

102
2-1. Driving procedures
■Recommended shifting speed
The following table indicates shifting speeds for optimum fuel economy.
mph (km/h)
■Maximum downshifting speed
Adhere to the downshifting speeds in the following table in order to prevent over-
revving the engine.
mph (km/h)
Shifting operationRecommended speed
1
215 (24)
2
325 (40)
3
440 (64)
4
545 (72)
5
650 (80)
Shift positionMaximum speed
133 (54)
256 (90)
383 (134)
4108 (172)

103
2-1. Driving procedures
2
When driving
Turn signal lever
■Turn signals can be operated when
The engine switch is in IG-ON mode.
■If the indicators flash faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
Left turn
Right turn
Move and hold the lever part-
way to signal a lane change
The left hand signal will flash
until you release the lever.
Move and hold the lever part-
way to signal a lane change
The right hand signal will flash
until you release the lever.

105
2
When driving
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
switch is in IG-ON mode.
Speedometer
Displays the vehicle speed.
Multi-information display
 P. 114
Tachometer
Displays the engine speed in revolutions per minute.
Tacho indicator
When the set engine speed is reached while driving, this ring-shaped indi-
cators 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.

107
2-2. Instrument cluster
2
When driving
Speed indicator■ Turning the indicator ON/OFF
 P. 218
■ Changing the speed indicator setting
The satellite switch can be used to change the set speed at which the
yellow speed indicator ring comes on.
The setting can be made only when the engine switch is in IG-ON
mode and the vehicle is stopped.
Push the
 or  switch to select
the speed indicator set mode. ( )
Turn the speed indicator to OFF
and then ON by pushing the ON/
OFF button. ( )
After one second, the mode enters
the indicator setting mode.
The speedometer needle moves to
the previously set speed.
STEP1

108
2-2. Instrument cluster
Push the  or  switch within 6
seconds of the speedometer nee-
dle moving to change the setting of
the desired speed, then turn the
indicator mode to ON by pushing
the ON/OFF button.
Pushing and holding the switch
changes values at a faster rate.
If the satellite switch is not oper-
ated for some time, the multi-infor-
mation display returns to its
previously displayed content.
The yellow indicator is displayed to
indicate that the desired speed has
been set.
Tacho indicator
■ Turning the indicator ON/OFF
 P. 218
■ Changing the tacho indicator setting
The satellite switch can be used to change the set engine speed at
which the yellow indicator ring comes on.
The setting can be made only when the engine switch is in IG-ON
mode and the vehicle is stopped.
STEP2

109
2-2. Instrument cluster
2
When driving
Push the  or  switch to select
the tacho indicator set mode. ( )
Turn the tacho indicator to OFF
and then ON by pushing the ON/
OFF button. ( )
After one second, the mode enters
the indicator setting mode.
The tachometer needle moves to
the previously engine speed.
Push the  or  switch within 6
seconds of the tachometer needle
moving to set the desired engine
speed, then set the indicator mode
in ON by pushing the ON/OFF
button.
Pushing and holding the switch
changes values at a faster rate.
If the satellite switch is not oper-
ated for some time, the multi-infor-
mation display returns to its
previously displayed content.
STEP1
STEP2

110
2-2. Instrument cluster
The yellow indicator value is dis-
played to indicate that engine
speed has been set.
■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 rpms is selected, the tacho indicator comes on only in red.
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. Check the engine after it
has cooled completely. ( P. 3 6 9 )

113
2-2. Instrument cluster
2
When driving
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as ABS and the SRS airbag 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 accide nt, which could result in death or serious
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. 333)
*: These lights turn on when the engi ne switch is turned to IG-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 mal-
function in a system if a light does no t come on, or if the lights do not turn
off. Have the vehicle inspected by your Lexus dealer.
(U.S.A.)(Canada)(Canada)(U.S.A.)
(Canada)(U.S.A.)(if equipped)
******
******

116
2-2. Instrument cluster
■Driving range
■ Average fuel consumption
■ Average fuel consumption after refueling
■ Current fuel consumption
■ Average vehicle speed Displays the estimated maximum distance that can
be driven with the quantity of fuel remaining.
This distance is computed based on your average fuel
consumption. As a result, th
e actual distance that can be
driven may differ from that displayed.
Displays the average fuel consumption since the
function was reset.
The function can be reset by pushing the DISP switch
for longer than one second when the average fuel con-
sumption is displayed.
Displays the average fuel consumption since the
vehicle was last refueled.
Displays the current rate of fuel consumption.
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.

117
2-2. Instrument cluster
2
When driving
■Gear position display
(vehicles with an automatic transmission only)
Indicates the current gear , and the range of gears
that is available when the shift lever is in the S or D
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 switch to IG -ON mode, CHECK is displayed while sys-
tem operation is checked. When the system check is complete, COMPLETED is
displayed before returning to the normal screen.
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 po ssibly an accident resulting in personal
death or injury.