engine lexus LFA 2012 Technical Information / LEXUS 2012 LFA: INSIDE THE LFA

93
Advice for long-term storage
■
■Battery
Removing the specified fuse helps to suppress parasitic current.
However, as the battery naturally loses its charge over time, it may become discharged
if the vehicle is stored for more than several months.
If the vehicle battery is discharged ( "
P. 94)
■
■Remove the fuse
1 Turn the ignition switch to the “LOCK” position.
2 Open the hood.
Hood ("P. 12)
3 Open the fuse box lid in the engine
compartment.
Push the tabs in and lift the lid off.
4 While referring to the back of the fuse
box lid for the location, use the pull-
out tool A to remove the “D/C CUT”
fuse B and put it into C.
Make sure that the fuse is firmly inserted.

94
If the battery is fully discharged or has insufficient charge, perform the following
procedures to gain vehicle access, release the parking brake and use another live
battery to start the engine:
■
■Unlocking the doors
The doors can be unlocked using the
master or valet keys.
If the vehicle battery is discharged

98
■
■Starting the engine by connecting an external
battery
1 Open the rear hatch and remove the
battery cover.
Manually unlock the rear hatch (" P. 95)
2 After removing the positive (+) battery terminal cover and checking that the
negative (-) terminal is securely fixed in place, connect the jumper cables in the
following order:
1. Connect the positive (+) jumper
cable to the LFA battery’s positive
(+) terminal.
2. C o n n e c t t h e o t h e r e n d o f t h e
positive (+) jumper cable to the
e x t e r n a l b a t t e r y ’s p o s i t i ve ( + )
terminal.
3. Connect the negative (-) jumper
c a b l e t o t h e ext e r n a l b a t t e r y ’s
negative (-) terminal.
4. C o n n e c t t h e o t h e r e n d o f t h e
negative (-) jumper cable to the
LFA battery’s negative (-) terminal.
To prevent thermal damage to the LFA’s CFRP (Carbon Fiber Reinforced Plastics) body,
ensure that the jumper cables are securely attached to the battery terminals and are not in
contact with any CFRP parts.

99
If the vehicle battery is discharged
3 Allow the battery to charge for a while, and then start the engine.
4 When the engine has started, remove the jumper cables in the exact reverse order
of how they were connected.

Negative battery terminal structure
The LFA's batter y terminals can be
disconnected by raising the lever and
disconnecting the terminal.
When reconnecting the terminal, make
sure that the lever is lowered into the
lock position.
Lock position

102
7 Select Neutral, engage the parking
brake, and turn the ignition switch to
the “LOCK” position.
8 When the LFA is completely loaded
onto the transport vehicle, secure it
with tire belts and chocks.
Be careful not to damage the tires with the
edge of the chocks.

Disabling the tilt sensor
If the tilt sensor is left on when loading the LFA onto a transport vehicle, the auto
alarm may activate.
1 Stop the engine and remove the
key.
2 Press the tilt sensor cancel switch
located inside the glove box.
3 While the indicator is flashing faster
than normal, close all the doors and
lock the vehicle using the wireless
remote control.

109
Technical information
Performance
Max. Speed325 km/h
Acceleration
(with two occupants) 0 to 100 km/h
3.7 sec.
Max. Allowed Speed 1st83 km/h
2nd 123 km/h
3rd 167 km/h
4th 218 km/h
5th 277 km/h
6th -
Turning Diameter
(outside front) Wall to Wall
6.1 m
Fuel Consumption At 60km/h
(Japanese models) 10.5 km/L
Advertised Mileage
(North American models) 11 mpg/16 mpg
(city/highway)
CO
2 Emissions (European models) 379 g/km
Acceleration diagram
Time [sec.]
Speed [km/h]
350
300 250
200
150
100 50 0 0 10 20 30 40 50 60

Transmission diagram
Speed [km/h]
Engine speed [rpm]
10,0009,000
8,000 7,000
6,000 5,000 4,000
3,000 2,000
1,000 0 50 100 150 200 250 300 350

110
Engine
Engine Type1LR-GUE
No. of Cyls. & Arrangement 10-cylinders, 72°V type
Valve Mechanism 40-valve DOHC, Rocker Arm Type
Bore x Stroke 88.0 mm x 79.0 mm
Displacement 4,805 cm
3
Compression Ratio12.0:1
Spark Plug Type
*1PK22HTBR-L8 (DENSO)
Engine Oil “Mobil 1 5W-50” API SM or SN
Engine Oil Capacity
*2Single Oil Cooler 13.5 L (14.2 qt., 11.9 Imp. qt.)
Twin Oil Cooler 14.5 L (15.3 qt., 12.8 Imp. qt.)
Lubrication Type Dry Sump
Coolant Type Super Long Life Coolant
Coolant Capacity 25.5 L (26.9 qt., 22.4 Imp. qt.)
Max. Output (SAE-NET) 412 kW (560 PS) 8,700 rpm
Max. Torque (SAE-NET) 480 Nm (48.9 kgf•m) 7,000 rpm
Maximum Engine Speed 9,000 rpm
*1: The spark plugs have been developed exclusively for the 1LR-GUE engine.*2: The figure shown is the total amount of oil contained in the engine, and not the amount of oil required for an oil change.

Engine powerband (Internal measurement)
Engine speed (rpm)
Power (kW)
Torque (Nm)
2,000
450
400
350
300
250
200
150
100
50
0 4,000 6,000 8,000 10,000 500
400
300

111
Technical information
Clutch and Transaxle
ClutchTypeDry Single-Plate Clutch
Diaphragm Spring
Operation Hydraulic Cylinder
Clutch Cover TypeDiaphragm Spring Turnover
Clutch Disc Diameter 240 mm
Transaxle Type ASG
(Automated Sequential Gearbox)
Transaxle Model RB60M
Front Counter Gear Ratio* 1.259
Transaxle Gear Ratios 1st3.231
2nd 2.188
3rd 1.609
4th 1.233
5th 0.970
6th 0.795
Rev 3.587
Differential Gear Ratio 3.417
Differential Type TORSEN
® LSD
Rear Transaxle Gear Oil Oil Viscosity“LT 75W-85” API GL-5
Rear Transaxle Gear Oil Capacity 5.3 L (5.6 qt., 4.7 Imp. qt.)
*: The front counter gear is lubricated by engine oil.

115
Index
Checking the oil level 69
Clock 67
Clutch 37
Clutch disc 37
Cold starting restrictions 17
Combination meter 57
Connecting an external battery
to start the engine 98
Control characteristics
depending on driving mode 23
Control pad 66
Coolant temperature 60
Coolant temperature gauge 60
Crankshaft 38
Creep phenomenon 37
DDark current (parasitic current) 93
Dead battery 94
Default shift speed setting 41
Departure angle 100
Diaphragm spring 37
Differential 39
Differential oil cooler 39
Digital display 56
Disabling the theft deterrent
system 102
Disabling the tilt sensor 102
Discharged battery 94
Disconnecting the negative (-)
battery terminal 99
Door mirror switches 9
Double wishbone front
suspension 47
Downshift 40
Driving mode 58
Driving mode selection 27
Driving mode selector switch 41
Driving mode selector switch
operation 23
Driving mode-linked variable
throttle response 33
Driving position 20
Driving position adjustment 10
Dry single-plate clutch 37
Dual shaft transmission 39
EECB (Electronically
Controlled Brake) 50
Emergency brake 9
Engine 56
Engine code 16
Engine coolant 60
Engine coolant temperature
gauge 60
Engine coolant temperature
sensor 60
Engine limiters 16
Engine oil pressure 62
Engine oil pressure gauge 62
Engine oil temperature gauge 61
Engine overspeed 70
Engine protection mechanisms 16

116
Engine response 56
Engine speed control 40
Engine speed limiters 16, 17
Engine starting restrictions in
extremely low temperatures 17
“ENGINE START” switch 9
Engine switch 9
Engine type 16
EPB (Electric Parking Brake) 52
EPS (Electric Power Steering)
system 44
Exterior care 78
Exterior maintenance 78
FFlat bed transporting 100
Flat-bottomed steering wheel 45
Floating disc 53
Floating rotor 53
Floor mat usage 22
Floor-mounted brake pedal 51
Front brake caliper 52
Front brake rotor 53
Front counter gear 38
Front disc 53
Front rotor 53
Front suspension 47
Fuel 63
Fuel filler door 12
Fuel filler door manual unlock 95
Fuel gauge 63
Fuel level units selection 67
Fuel tank 63
Fuel tank cap 12
Fuel tank volume 12
Fuel type 12
Fuelling up 12
Fuse 93
GGas 63
Gas filler door 12
Gas filler door manual unlock 95
Gas level units selection 67
Gas tank 63
Gas tank cap 12
Gas tank volume 12
Gas type 12
Gauge 57
Gauge cluster 57
Gauges 57
Gear selection 36
Genuine leather maintenance 84
HHandbrake 9
Heel stopper 22, 51
Hood 12
Hood stand 12
IIdeal driving position 17
If the vehicle battery is discharged 94
Ignition switch 9