stop start lexus LFA 2012 Technical Information / LEXUS 2012 LFA (OM77006U) User Guide

144
2-2. Instrument cluster
Select “Lap Timer” and press right
on the control pad.
The “Lap Timer” function will be
turned “ON” and the trip informa-
tion/odometer will be changed to
stopwatch mode.
Select “Lap Times” and press right
on the control pad.
Lap time list, “Fastest Lap”, and
“Total” will be displayed. “ Start”
and “ Reset” will be shown on the
stopwatch display.
STEP2
STEP3

145
2-2. Instrument cluster
2
When driving
Press up on the control pad
(“ Start”) to begin measurement.●To measure lap times:
Press down on the control pad
(“ Lap”) during measurement
to mark off a lap. The lap time
will be added to the lap time list.
(The most recent lap will be dis-
played at the top of the lap time
list.)
The fastest lap time will also be
displayed as “Fastest Lap”.
● To stop measurement:
Press up on the control pad
(“ Stop”) during measurement.
When “ Stop” is selected, the
stopwatch time is not recorded
as a lap time.
When “ Start” is selected,
measurement resumes from the
stopwatch time shown.
STEP4

156
2-2. Instrument cluster
■Meter operation restrictions while vehicle is in motion
While the vehicle is in motion, some menu items cannot be changed using the con-
trol pad. Restricted items are displayed in gray or without an arrow. These items can
be operated once the vehicle is stopped.
■“Rev Ind” (rev indicator)
●Even if the green or amber indicator is set to 9000 rpm, the over-rev warning
will be displayed.
●If the green and amber indicators are both set to the same engine speed, the
indicator will be shown in amber.
■Measuring the engine oil level
●The dry sump lubrication system circulates the engine oil between the engine
and oil tank according to driving conditions. Accordingly, the engine oil level in
the oil tank may vary even if the overall amount is constant, affecting the mea-
surement results.
●It takes some time for the engine oil level to stabilize after the engine is started.
To obtain a more stable result, drive the vehicle for a while and then perform the
measurement without stopping the engine.
●If an attempt to measure the oil level is made immediately after the previous oil
level measurement process was completed, the previous measurement may be
displayed.
●If the measurement result flashes, the measuring function is malfunctioning.
Have the vehicle inspected by your Lexus dealer.
■Engine oil maintenance
“Oil maintenance required” will be displayed once the vehicle has been driven for
more than 6214 miles (10000 km) since the last reset. (
P. 3 2 7 )
The engine oil may need to be replaced earlier depending on driving conditions.
●Over-rev warning (regular setting)
If the engine speed enters the red zone, the
over-rev warning will be shown in red
regardless of the set speed.

166
2-4. Using other driving systems
Driving assist systems
To help enhance driving safety and performance, the following systems oper-
ate automatically in response to various driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too
heavily when operating the vehicle.
■ ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the br akes are applied suddenly, or if the
brakes are applied while driving on a slippery road surface.
■ Brake assist
Generates an increased level of braking force after the brake pedal is
depressed when the system de tects a panic stop situation.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■ TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
Helps to reduce the vehicle’s rolling backward distance when starting on an
incline or slippery slope.
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel.
■VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, VSC, TRAC, and hill-
start assist control systems.
Helps to maintain vehicle stability when swerving on slippery road surfaces
by controlling the brakes and engine output.
When switched to SPORT driving mode, the control characteristics of the
VDIM system are altered.
■ Active rear wing
 P. 1 7 1

167
2-4. Using other driving systems
2
When driving
When the ABS/VSC/TRAC/hill-start assist control systems are operating
The slip indicator flashes to indi-
cate that the ABS/VSC/TRAC/
hill-start assist control systems are
operating.
The stop lights and high mounted
stoplight turn on when the hill-start
assist control system is operating.
Disabling the VSC/TRAC systemsIf the vehicle gets stuck in fresh snow or mud, VSC/TRAC 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.
Press the switch to turn off VSC
and TRAC.
The VSC off indicator light and
“TRAC OFF” indicator light should
come on.
Press the switch again to turn the
systems back on.

168
2-4. Using other driving systems
■Hill-start assist control operation conditions
●The vehicle rolls backward.
●A forward gear is selected.
●The brake pedal is not depressed.
■Automatic reactivation of the VSC/TRAC systems
If the VSC/TRAC systems are turned off, re-starting the engine will automatically
reactivate them.
■Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC and hill-start
assist control systems
●A sound may be heard from the engine compartment if the brake pedal is
depressed repeatedly 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.
■EPS operation sound
When the steering wheel is operated, a motor sound may be heard. This does not
indicate a malfunction.
■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 in put 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.
■If the slip indicator comes on
It may indicate a malfunction in the VSC, TRAC or hill-start assist control system.
Contact your Lexus dealer.

169
2-4. Using other driving systems
2
When driving
CAUTION
■The ABS does not operate effectively when
●Tires with inadequate gripping ability are used.
●The vehicle hydroplanes while driving at high speed on wet or slick roads.
■Stopping distance when the ABS is operating will exceed that of normal condi-
tions
The ABS is not designed to shorten the vehicle’s stopping distance. Always main-
tain a safe distance from the vehicle in front of you in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving over bumps in the road
●When driving over roads with potholes or roads with uneven surfaces
■TRAC may not operate effectively in some conditions
Directional control and power may not be ac hievable while driving on slippery road
surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■Hill-start assist control does not operate effectively in some conditions
Do not overly rely on the hill-start assist co ntrol. The hill-start assist control may not
operate effectively depending on the grad e of incline and on roads covered with
ice.
■If the slip indicator flashes while driving
The slip indicator flashes to indicate that ABS, VSC, TRAC or hill-start assist con-
trol is operating. Always drive carefully. Reckless driving may cause an accident.
Exercise particular care when the indicator light flashes.
■When the VSC/TRAC 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 vehicl e stability and driving force by automati-
cally controlling the brakes and engine ou tput, do not turn the VSC/TRAC systems
off unless necessary.

192
3-1. Using the air conditioning system and defogger
■Using the automatic mode
Fan speed is adjusted automatically accord ing to the temperature setting and ambi-
ent conditions. As a result, the following may occur:
●The system may switch automatically to recirculated air mode when the coolest
temperature setting is selected when the ambient temperature is high.
●Immediately after is pressed, the fan may stop for a while until warm or
cool air is ready to flow.
●Cool air may flow to the area around the upper body when the heater is on.
■Switching between outside air and recirculated air modes
Recirculated air mode or outside air mode may be automatically switched to in
accordance with the temperature setting and the inside temperature.
■Using the system in outside air mode
As hot air from the hood grilles may flow through the air outlets, it is recommended
that the air conditioning system be turned on while outside air mode is used.
■Using the system in recirculated air mode
The windows will fog up more easily if recirculated air mode is used.
■When is selected for the air outlets used
For your driving comfort, air flowing to th e feet may be warmer than air flowing to
the upper body depending on the temperature setting.
■When the outside air temperature approaches 32 F (0C)
The air conditioning system may not operate even when “A/C” is selected on the
operation screen.
■Air conditioning odors
●During use, various odors from inside and outside the vehicle may enter into
and accumulate in the air conditioning sy stem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immediately after the air conditioning system is started in automatic mode.

199
3-1. Using the air conditioning system and defogger
3
Interior features
■Using the automatic mode
Fan speed is adjusted automatically according to the temperature setting and ambi-
ent conditions. As a result, the following may occur:
●The system may switch automatically to recirculated air mode when the coolest
temperature setting is selected when the ambient temperature is high.
●Immediately after is pressed, the fan may stop for a while until warm or
cool air is ready to flow.
●Cool air may flow to the area around the upper body when the heater is on.
■Switching between outside air and recirculated air modes
Recirculated air mode or outside air mode may be automatically switched to in
accordance with the temperature se tting and the inside temperature.
■Using the system in outside air mode
As hot air from the hood grilles may flow through the air outlets, it is recommended
that the air conditioning system be turned on while outside air mode is used.
■Using the system in recirculated air mode
The windows will fog up more easily if recirculated air mode is used.
■When is selected for the air outlets used
For your driving comfort, air flowing to th e feet may be warmer than air flowing to
the upper body depending on the temperature setting.
■When the outside air temperature approaches 32 F (0C)
The air conditioning system may not operate even when
is pressed.
■Air conditioning odors
●During use, various odors from inside and outside the vehicle may enter into
and accumulate in the air conditioning sy stem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in automatic mode.

254
4-3. Do-it-yourself maintenance
CAUTION
■When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of death or
serious injury:
●When using a floor jack, follow the instructions of the manual provided with the
jack.
●Do not put any part of your body underneath the vehicle when it is supported
only by the floor jack.
●Always use floor jack and/or automotive jack stands on a solid, flat, level surface.
●Do not start the engine while the vehicle is supported by the floor jack.
●Stop the vehicle on level, firm ground, firmly set the parking brake and select
Reverse.
●Make sure to set the floor jack or automotive jack stand properly at the jack point.
Raising the vehicle with an improperly positioned floor jack or automotive jack
stand will damage the vehicle and may cause the vehicle to fall off the floor jack or
automotive jack stand.
●Do not raise the vehicle while someone is in the vehicle.
●When raising the vehicle, do not place any objects on top of or underneath the
floor jack.
●Lift up the vehicle using a floor jack such as
the one shown in the illustration.
Minimum lifting saddle height (when low-
ered):
3.1 in. (80 mm) or less
●Do not touch the area shown in the illustra-
tion.
Touching this area immediately after the
vehicle has been driven may result in burns.