2012 Lexus GX460 coolant temperature

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5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
■Overheating
In the following situations, your vehicle may be overheating:
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
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 compartment may be very hot, causing serious
injury such as burns.
●Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
●Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding coolant.
When adding coolant, do so slowly. Adding cold coolant to a hot engine too quickly
can cause damage to the engine.

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Alphabetical index
GX460_U.S.A. (OM60J00U)
Electronic keyIf the electronic key does not
operate properly ............................ 739
Emergency, in case of
If the electronic key does not operate properly ............................ 739
If the engine will not start ............... 735
If the shift lever cannot be shifted from P.................................... 737
If the vehicle has discharged
battery.................................................... 741
If the warning buzzer sounds..... 688
If the warning light turns on ......... 688
If the warning message is
displayed ............................................ 700
If you have a flat tire .......................... 721
If you lose your keys ........................ 738
If you think something is
wrong...................................................683
If your vehicle becomes stuck .....747
If your vehicle has to be stopped in an emergency ......... 749
If your vehicle needs to be towed ....................................................677
If your vehicle overheats.................744
Emergency flashers
Switch ...................................................... 676 Engine
Accessory mode..................................179
Compartment..................................... 609
Engine switch .........................................179
Hood ....................................................... 608
How to start the engine ....................179
Identification number .......................753
If the engine will not start................735
Ignition switch ........................................179
Overheating ......................................... 744
Engine compartment cover .............. 610
Engine coolant Capacity ................................................. 757
Checking ................................................ 616
Preparing and checking before winter ................................... 366
Engine coolant temperature gauge....................................................... 195
Engine immobilizer system..................115
Engine oil Capacity .................................................755
Checking .................................................. 611
Preparing and checking before winter ................................... 366
Engine oil maintenance data............. 613
Engine switch ...........................................179
Engine switch light................................. 519
Event data recorder ........................... 685E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

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GX460_U.S.A. (OM60J00U)
What to do if...
What to do if...
A tire puncturesP. 7 2 1If you have a flat tire
The engine does not start
P. 1 1 5Engine immobilizer system
P. 7 3 5If the engine will not start
P. 74 1If the vehicle battery is discharged
The shift lever cannot be
moved outP. 7 3 7If the shift lever cannot be shifted
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 74 4If your vehicle overheats
The key is lostP. 7 3 8If you lose your keys
The battery is dischargedP. 74 1If the vehicle battery is discharged
The doors cannot be lockedP. 5 0Side doors
P. 5 3Back door
The horn begins to soundP. 1 1 7Alarm
The vehicle is stuck in mud or
sandP. 74 7If the vehicle becomes stuck