engine lexus LFA 2012 Technical Information / LEXUS 2012 LFA (OM77006U) Workshop Manual

173
2-4. Using other driving systems
2
When driving
NOTICE
■To prevent system damage
●Do not apply pressure to the active rear wing when pushing or pulling the vehicle.
●Do not lean on the active rear wing.
●Do not attach any accessories or other foreign objects to the active rear wing.
●Do not modify or disassemble the active rear wing.
●Do not subject the active rear wing to severe impacts.
■To prevent battery discharge
Do not operate the active rear wing repe atedly while the engine is turned off.

174
2-4. Using other driving systems
Launch control
When set, launch control enables the vehicle to accelerate from a standing
start at 4000 rpm. Launch control uses overall optimized control that consid-
ers vehicle acceleration performance, st ability and clutch durability. (Do not
use launch control on public roads.)
■ Setting the system
Ensure that you are seated well ba ck in the driver’s seat with the
seat belt fastened.
Make sure that the passenger is al so seated well back with their seat
belt fastened.
Start the engine. Firmly depress the brake pedal with your left
foot and release the parking brake.
Continue to depress the brake pedal.
Select SPORT driving mode.
Select shift speed level 7.
Pull the “+” paddle shift switch to select 1st gear.
Pull the “-” paddle shift swit ch and hold it for 5 seconds.
“LAUNCH” will be displayed on the meter.
Release the “-” paddle shift switch.
Depress the accelerator pedal firmly.
Continue to depress the accelerato r pedal. The engine speed will be
automatically maintained at 4000 rpm. The vehicle is then ready for
launch.
Release the brake pedal.
The vehicle will launch forward.
Once the accelerator pedal is released completely, launch control will be
canceled and SPORT driving mode will be engaged.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
STEP7
STEP8
STEP9

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2-4. Using other driving systems
2
When driving
■Start-off acceleration
Start-off acceleration depends on how much the accelerator pedal is depressed.
■Usage restrictions
●Launch control cannot be set if the total mileage shown on the odometer is less
than 310 miles (500 km).
●Launch control cannot be set until the engine and transmission are fully warmed
up. Before using launch control, warm up the vehicle by driving it.
●Launch control cannot be set if there is a malfunction in the engine, transmis-
sion, drive control system or other relevant systems.
●As launch control places a significant load on the vehicle's mechanisms, it can-
not be used two or more times in succes sion. After using launch control, cruise
at a normal speed for approximately 10 minutes to allow vehicle mechanisms to
cool down.
●To protect the systems, the number of times that launch control can be used is
limited. To check how many times launch control has been used on your vehicle,
contact your Lexus dealer.
CAUTION
■Launch control precautions
●Do not use on public roads.
●Use only when road and ambient conditions are safe.
●Before use, ensure that no people or obstructions are nearby.
●Proper use of launch control requires a professional level of driving skill. When
driving, always check track conditions and the surrounding area.
NOTICE
■To prevent system damage
●Always follow the correct operation procedures as described in this manual.
●Only use launch control on dry, paved ro ad surfaces, as slippery or loose road
surfaces may cause damage to the vehicle's mechanisms.

180
2-5. Driving information
Winter driving tips
Carry out the necessary preparations and inspections before driving the
vehicle in winter. Always drive the vehicle in a manner appropriate to the pre-
vailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine coolant
• Washer fluid
● Have the vehicle fitted with four snow tires.
Ensure that all tires are the specified size and the same brand.
■Before driving the vehicle
Perform the following according to the driving conditions.
● Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in front
of the windshield.
● Remove any ice that has accumu lated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow that may
have accumulated in the wheel well or on the brakes.
■ When driving the vehicle
Accelerate the vehicle slowly and driv e at a reduced speed suitable to
road conditions.

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2-5. Driving information
2
When driving
■Tire grip at low temperatures
The tires fitted to the LFA are designed for dry road conditions. As such, tire grip on
cold, snowy and/or icy roads will be reduced compared to standard tires.
Be sure to use snow tires on snowy and/or icy roads and drive carefully at a speed
appropriate for road and weather conditions.
■Engine starting restrictions
In order to protect the engine, the engine may not start when the engine coolant
temperature or engine oil temperature is below -13 F (-25C). In that case, a
buzzer will sound and “Temp low Engine cannot be started” will be shown on the
meter. ( P. 3 2 7 )
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and cause death or serious
injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h), regardless of the type of snow tires
being used.
●Use snow tires on all, not just some wheels.
NOTICE
■Driving with tire chains
Do not fit tire chains. Tire chains may da mage the vehicle body and suspension, and
adversely affect driving performance.
■Repairing or replacing snow tires
Request repairs or replacement of snow ti res from Lexus dealers or legitimate tire
retailers.
This is because the removal and attachment of snow tires affects the operation of
the tire pressure warning valves and transmitters.

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2-5. Driving information
2
When driving
Dinghy towing
The LFA can be dinghy towed in a forward direction (with 4 wheels on the
ground) behind a motor home.
Towing your vehicle with 4 wheels on the groundTo prevent damage to your vehicle, perform the following procedures
before towing: Turn the ignition switch to the “ON” position.
Select Neutral.
Release the parking brake.
Turn the ignition switch to the “ACC” position.
Ensure that the audio system and other powered devices have been
turned off.
After towing, leave the engine in idle for at least 3 minutes before driving
the vehicle.
■Necessary equipment and accessories
Specialized equipment and accessories are required for dinghy towing. Contact
the service branch of the motor home manufacturer regarding recommended
equipment.
STEP1
STEP2
STEP3
STEP4

193
3-1. Using the air conditioning system and defogger
3
Interior features
■Outside temperature display
●The temperature display shows temperatures within the range of -40°F (-40°C)
and 122°F (50°C).
●In the following situations, the correct outside temperature may not be dis-
played, or the display may take longer than normal to change:
• When the vehicle is stopped, or moving at low speeds (less than 15 mph [25
km/h])
• When the outside temperature has chan ged suddenly (at the entrance/exit of
a garage, tunnel, etc.)
●When “--” or “E” is displayed, the system may be malfunctioning. Take your vehi-
cle to your Lexus dealer.
CAUTION
■To prevent the windshield from fogging up
Do not use
during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outs ide air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the engine
is stopped.

200
3-1. Using the air conditioning system and defogger
CAUTION
■To prevent the windshield from fogging up
Do not use
during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the engine
is stopped.

206
3-2. Using the audio system
Ejecting discs■ Ejecting a disc
Select the disc to be ejected.
Push the “ ” button and remove the disc.
■ Ejecting all discs
Push and hold the “ ” button until you hear a beep, then remove the
discs.
■Using cellular phones
Interference may be heard through the audi o/video system’s speakers if a cellular
phone is being used inside or close to the vehicle while the audio/video system is
operating.
NOTICE
■To prevent battery discharge
Do not leave the audio/video system on longer than necessary with the engine off.
■To avoid damaging the audio/video system
Take care not to spill drinks or othe r fluids over the audio/video system.
STEP1
STEP2

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3-5. Other interior features
Power outlet
The power outlet can be used for 12 V accessories that run on less than 10 A.
Open the glove box. (P. 210)
Open the lid.STEP1
STEP2
■The power outlet can be used when
The ignition switch is in the “ACC” or “ON” position.
NOTICE
■To avoid damaging the power outlet
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter th e power outlet may cause a short circuit.
■To prevent blown fuses
Do not use an accessory that uses more than 12 V 10 A.
■To prevent battery discharge
Do not use the power outlet longer than necessary when the engine is not running.