2012 Lexus LFA coolant temperature

260
4-3. Do-it-yourself maintenance
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
“FULL”
Reservoir cap
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31 F [-35C])
For more details about coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the hoses and engine coolant reservoir cap.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.

308
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge ind icates that the temperature is
higher than normal.
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spon gy feeling, pedal almost touches
the floor

5
When trouble arises
313
5-2. Steps to take in an emergency
Stop the vehicle immediately.The following warnings indicate the possibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
(Flashes) Engine oil temperature warning light (warning buzzer)
Indicates that the engine oil temperature is too high.
(Flashes) Engine coolant temperature warning light (warning
buzzer)
Indicates that the engine coolant temperature is too high.
( P. 3 5 1 )
(Flashes)

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

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.

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.

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”.

406
Alphabetical index
Engine coolant temperature gauge......................................................... 116
Engine immobilizer system.................. 53
Engine oil Adding engine oil .............................. 257
Capacity ...................................................361
Checking ............................................... 257
Engine oil consumption..................258
Engine oil pressure gauge ............... 116
Engine oil temperature gauge ....... 116
Oil brand .................................................361
Temperature ......................................... 100
Warning message..................324, 327
Engine oil level ........................................ 132
Engine oil maintenance ....................... 132
Engine oil temperature.......................... 116
EPS .............................................................. 166
Event data recorder ............................. 310 First-aid kit ................................................ 218
Flatbed tow truck.................................. 306
Floor jack ................................................. 253
Floor mats ..................................................215
Fluid
Brake ........................................................262
Washer....................................................264
Front turn signal lights Switch .......................................................... 112
Replacing light bulbs ....................... 299
Wattage ..................................................367
Fuel Capacity ................................................ 360
Fuel gauge ................................................ 116
Fuel pump shut off system ............ 309
Fuel tank cap ...........................................49
Information ........................................... 368
Warning light......................................... 315
Fuel consumption .......................... 118, 132
Fuel filler door Fuel tank.....................................................49
Washer fluid .........................................264
Fuel pump shut off system................. 309
Fuses .......................................................... 287
Gauges Adding engine oil...............................257
Tire pressure.........................................270
Meter ........................................................... 116
Gear changes ......................................... 102
Glove box ................................................. 210F
G