coolant temperature Lexus IS300 2016 Quick Guide / LEXUS 2016 IS200T,IS300,IS350 (OM53D18U) User Guide

5188-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are oper ating by checking the fan sound and air flow.
If it is difficult to check th ese, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
Check if “Engine Coolant High Temperat ure” is shown on the multi-informa-
tion display.
If the message does not disappear:
Stop the engine and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
5
Engine (IS350/IS300)Engine (IS200t)
Intercooler (IS200t only)
6
7
8

5198-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D18U)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●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.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and
belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-
ous injury.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding cool coolant
to a hot engine too quickly can cause damage to the engine.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additive.
●IS350/IS300: Do not loosen the coolant res-
ervoir caps or radiator cap while the engine
and radiator are hot. (The radiator cap is
located under the engine cover.)
High temperature steam or coolant could
spray out.
●IS200t: Do not loosen the coolant reservoir
cap or intercooler reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could
spray out.

586Alphabetical index
IS350/300/200t_U (OM53D18U)
Emergency flashers ............................. 466
Engine ....................................................... 526ACCESSORY mode....................... 165
Compartment ...................................... 423
Engine switch ........................................ 164
Hood ..........................................................421
How to start the engine ................... 164
Identification number .......................526
If the engine will not start............... 506
Ignition switch (engine switch)..... 164
Overheating .......................................... 516
Engine coolant....................................... 428 Capacity .................................................. 531
Checking................................................428
Preparing and checking before winter ....................................270
Engine coolant temperature gauge ..........................................................81
Engine immobilizer system ................. 69
Engine oil ................................................. 425 Capacity ................................................. 527
Checking................................................425
Preparing and checking before winter ....................................270
Engine oil maintenance data ............427
Engine switch ...........................................164
Enhanced VSC ..................................... 249
EPS (Electronic Power Steering) ........ 250Function ................................................. 250
Warning light ....................................... 477
Event data recorder (EDR) ...................10 First-aid kit storage belt..................... 385
Flat tire .......................................................496
Floor mats....................................................26
Fluid
Automatic transmission .................. 532
Brake........................................................ 533
Washer ................................................... 433
Fog lights....................................................186 Replacing light bulbs ....................... 463
Switch ....................................................... 186
Wattage .................................................536
Footwell light .......................................... 378 Wattage .................................................536
Front passenger occupant classification system ............................ 47
Front personal lights ............................379 Wattage .................................................536
Front seats ................................................. 123 Adjustment.............................................. 123
Cleaning.................................................409
Correct driving posture .................... 28
Driving position memory................. 126
Head restraints .......................................131
Power easy access system ............. 126
Seat heaters ...........................................377
Seat position memory ....................... 126
Seat ventilators.....................................377F