2012 Lexus LFA engine coolant

5
When trouble arises
329
5-2. Steps to take in an emergency
Indicates that the washer
fluid level is low.Add washer fluid.
(
 P. 2 6 4 )
Indicates that engine oil
level is low. Check the level of engine
oil (
P. 132), and add if
necessary ( P. 2 5 7 ) .
Indicates that the engine
oil needs to be changed. Have the engine oil
changed at your Lexus
dealer. (Also have the oil
maintenance function
reset.)
Indicates that the engine
coolant temperature or
engine oil temperature is
below -13 F (-25 C). Start the engine when the
engine coolant or engine
oil temperature reaches
-1 1
F (-24 C) or higher.
Indicates that the battery
voltage is low. Start the engine.
Indicates that the spark
plugs are dirty or carbon
fouled. Drive the vehicle at 2400
rpm or higher for a total
duration of several min-
utes.
MessageDetailsCorrection procedure

5
When trouble arises
351
5-2. Steps to take in an emergency
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the engine. Care fully lift the hood after the steam subsides
and then restart the engine.
If you do not see steam:
Leave the engine running and carefully lift the hood.
Check to see if the cooling fan is
operating.
While being careful of hot air and
exhaust gases, check by looking
through the radiator grilles or by
listening to the operating sound.
If the fan is operating:
Wait until the engine coolant tem-
perature shown on the gauge low-
ers and then stop the engine.
If the fan is not operating:
Stop the engine immediately and
call your local Lexus dealer.
STEP1
STEP2
STEP3

352
5-2. Steps to take in an emergency
After the engine has cooled down
sufficiently, check the engine cool-
ant level and inspect the radiator
core (radiator) for any leaks.
Add engine coolant if necessary.
(P. 362)
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Have the vehicle inspected at the ne arest Lexus dealer as soon as possi-
ble.
STEP4
STEP5
■Overheating
If you observe the following, your vehicle may be overheating.
●The engine coolant temperature gauge flashes or a loss of power is experi-
enced.
●Steam comes out from under the hood.

5
When trouble arises
353
5-2. Steps to take in an emergency
CAUTION
■To prevent an accident or injury when inspecting under the hood of your vehicle
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartm ent may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the drive belt while the engine is running.
●Do not loosen the coolant reservoir cap while the engine and radiator are hot.
Serious injury, such as burns, may resu lt from hot coolant and steam released
under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled do wn before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine.

361
6-1. Specifications
6
Vehicle specifications
Lubrication system■ Specified engine oil for the LFA
*1: The oil filters used are exclusive to the LFA. When the oil is changed, the oil fil-
ters should also be replaced.
*
2: The lifetime of the vehicle depends greatly on the quality of oil used. The use of “Mobil 1 5W-50” is most suitable for your vehicle and is recommended.
Oil capacity*1
(Amount of oil required
for an oil change 
reference) With twin air-cooled oil cooler
18.0 qt. (17.0 L, 15.0 Imp. qt.)
With single air-cooled oil cooler
16.9 qt. (16.0 L, 14.1 Imp. qt.)
Oil brand*2“Mobil 1 5W-50”
Recommended API
grade
SM or SN
■Engine oil viscosity
●The 5W portion of the oil viscosity rating
indicates the characteristic of the oil
which allows cold startability. Oils with a lower value before the W allow for eas-
ier starting of the engine in cold weather.
●The 50 in 5W-50 indicates the oil viscosit y when the oil is at its operating tem-
perature. An oil with a higher viscosity may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
NOTICE
■To prevent engine damage
If “Mobil 1 5W-50” is not available, another oil of equivalent quality to “Mobil 1
5W-50” may be used. In this case, do not start the engine if the engine coolant or
oil temperature is below 5 F (-15C), and do not drive the vehicle under extreme
load conditions.

362
6-1. Specifications
Cooling system
Ignition system
Capacity26.9 qt. (25.5 L, 22.4 Imp. qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili- cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO PK22HTBR-L8
0.032 in. (0.8 mm)
NOTICE
■Platinum-tipped spark plugs
Use specified spark pl
ugs mentioned above. Do not adjust gap when tuning engine.

377
6-1. Specifications
6
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Accessory weight The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Cold tire inflation pres-
sure Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Curb weight The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipp
ed, air conditioning and
additional weight optional engine
Maximum inflation pres-
sure The maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Production options
weight The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim

405
Alphabetical index
Electric power steering ....................... 166
Emergency, in case ofIf the active rear wing will not operate ....................................... 325
If the engine will not start ............... 343
If the fuel filler door cannot be opened ............................................ 50
If the parking brake cannot be released ....................................... 345
If the rear hatch cannot be opened ....................................................29
If the vehicle has a discharged battery.................................................. 348
If the warning buzzer sounds........ 312
If the warning light turns on ............ 312
If the warning message is displayed .............................................322
If you have a flat tire ........................ 332
If you lose your keys ........................ 344
If you lose your wireless remote control ................................ 344
If you think something is wrong...................................................308
If your vehicle becomes stuck .... 354
If your vehicle has to be stopped in an emergency ......... 355
If your vehicle needs to be towed ................................................... 303
If your vehicle overheats.................. 351 Emergency flashers
Switch.......................................................302
Engine “ENGINE START” switch ...............98
Compartment......................................256
Engine coolant ................................... 260
Engine coolant temperature gauge....................................................... 116
Engine oil pressure gauge ............... 116
Engine oil temperature gauge ....... 116
Engine speed restrictions .................90
Engine starting restrictions............... 181
Hood ....................................................... 250
How to start the engine .....................98
Identification number ...................... 358
Idling with five cylinders.....................90
If the engine will not start................343
Ignition switch .........................................98
Overheating .......................................... 351
Tachometer ......................................... 260
Variable red zone................................. 119
Warning light ........................................ 314
Warning message ................. 324, 327
Engine coolant Capacity .................................................362
Checking .............................................. 260
Coolant type ........................................362
Engine coolant temperature gauge....................................................... 116
Preparing and checking before winter .....................................180E
*2: Refer to “Inside the LFA”.