2012 Lexus LFA overheating

35
1-3. Adjustable components (seats, mirrors, steering wheel)
1
Before driving
CAUTION
■If the seat belt guide is disengaged
●Make sure that the seat belt guide is securely fixed before driving.
●After using the seatback fold and return switch, make sure that the seat belt
passes through the seat belt guide.
■Avoiding burns when using the seat heaters
●Use caution when seating the following pers ons in a seat with the seat heater on
to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs,
cold remedies, etc.)
●Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature of the
seat and may lead to overheating.
●Do not use the seat heater more than necessary. Doing so may cause minor
burns or overheating.
NOTICE
■To prevent seat heater damage
Do not put heavy objects that have an unev en surface on the seat and do not stick
sharp objects (needles, nail s, etc.) into the seat.
■To prevent battery discharge
Turn the seat heaters off when the engine is not running.

120
2-2. Instrument cluster
■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.
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone.
●The following may indicate that the engine is overheating. Immediately stop the
vehicle in a safe place.
• The display on the engine coolant temperature gauge flashes. (
P. 3 5 1 )
• The display on the engine oil temperature gauge flashes. (
P. 313)
●In the following situations, the engine may be malfunctioning. Immediately stop
the vehicle in a safe place and contact your Lexus dealer.
• The oil pressure gauge display does not show an increase even if the acceler-
ator pedal is depressed.
• The “Engine oil pressure low” warning message is displayed.

234
4-1. Maintenance and care
NOTICE
■When using high pressure car washes
Do not aim the head of the nozzle at the hood
grilles or radiator grilles.
Doing so may negatively affect the engine or
cause a malfunction in the electric cooling fan
motors that may result in overheating.

330
5-2. Steps to take in an emergency
Indicates that gear shift-
ing is restrained tempo-
rarily (due to overheating
of the transmission
pump).Gear shifting is not pos-
sible while this message
is displayed. Refrain from operating the
paddle shift switches for 5
or more seconds.
Indicates that gear shift-
ing is restrained (due to
low transmission fluid
temperature). Gear shifting is not pos-
sible while this message
is displayed. Warm up the vehicle by
driving it.
Indicates that the clutch
has temporarily over-
heated. Stop the vehicle in a safe
place and select Neutral.
Allow the clutch to cool
down by allowing the
vehicle to idle for
approximately 15 min-
utes.
MessageDetailsCorrection procedure

5
When trouble arises
331
5-2. Steps to take in an emergency
■To prevent the clutch from overheating
●Do not use the accelerator pedal to hold the vehicle on uphill inclines in an
attempt to prevent the vehicle from moving backward.
●On uphill inclines, observe the following whenever possible:
• Maintain a safe distance from the vehicle ahead and avoid frequent starts.
• Avoid using AUTO driving mode on uphill inclines. This will help to avoidunnecessary gear changes.
■If “Battery low Electric al equipment operation is limited” is displayed
The battery voltage is low. The operation of the air conditioning system, transmis-
sion pump and other power-consuming components may be temporarily limited
until the battery is recharged.

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.

404
Alphabetical index
CleaningExterior ................................................... 228
Interior ..................................................... 235
Seat belts................................................ 236
Clock .......................................................... 148
Condenser ............................................... 261
Control pad .............................................. 125
Cooling system Engine overheating ............................351
Current fuel consumption.................. 132
Customizable features ...................... 383
Daytime running light system ........... 159
Defogger Rear window ..........................................201
Side mirror ..............................................201
Dimension*
2
Dinghy towing ......................................... 183
Discharge headlights Discharge headlight precautions ...................................... 300
Replacing light bulbs........................ 299
Switch ....................................................... 158
Wattage.................................................. 367
Display Menu display.......................................... 124
Rear view monitor system...............163
Trip information ..................................... 118
Warning message............................. 322
Do-it-yourself maintenance ............. 247 Door courtesy lights
Door courtesy lights .........................207
Wattage ..................................................367
Door pockets ........................................... 212
Doors Door lock ......................................... 22, 25
Door windows ........................................46
Side mirrors.............................................. 43
Down light ............................................... 207
Driver's seat belt reminder light ...... 315
Driving Correct posture.................................... 59
Procedures.............................................. 88
Driving mode .......................................... 104
Driving range ............................................ 119
D

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”.