engine coolant Lexus IS300 2016 Owner's Manual / LEXUS 2016 IS200T,IS300,IS350 (OM53D18U) User Guide

4297-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)Canada:
“Toyota Super Long Life Coolant” is a mixt
ure of 55% coolant and 45% deionized water.
(Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock and water
pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in the
cooling system.
Check the radiator, condense r and intercooler radiator (if equipped) and clear
away any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their condition,
have your vehicle inspected by your Lexus dealer.
CAUTION
■When the engine is hot
Do not remove the engine coolant reservoir cap, radiator cap (IS350/IS300) or inter-
cooler coolant reservoir cap (IS200t). ( P. 5 1 9 )
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
Radiator, condenser and intercooler radiator (if equipped)
CAUTION
■When the engine is hot
Do not touch the radiator, condenser or inte rcooler radiator (if equipped) as they may
be hot and cause serious injuries, such as burns.

4748-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
●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 needle continually points higher than nor-
mal.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●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, spongy feeling, pedal almost touches the floor
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
Audible symptoms
Operational symptoms

4858-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D18U)
Indicates that the vehicle is being driven at 3 mph (5
km/h) or more with the parking brake still engaged. A buzzer also sounds.
 Release the parking brake.
Indicates that the shift lever was used to attempt to shift
to the first gear position in M mode on a slippery road
surface
The gear position will not sh ift from the second gear.
A buzzer also sounds.
 Drive the vehicle in the second or a higher gear
position.
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The ABS; or
• The brake assist system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
 P. 5 1 6
(If equipped)
Indicates that the radar sensor is dirty or covered with
ice
A buzzer also sounds.
 Clean the sensor.
(If equipped)
Indicates that the dynamic radar cruise control system is
unable to judge vehicle-to-vehicle distance
A buzzer also sounds.
 Tu r n o f f s n o w m o d e .
If the windshield wipers are on, turn them off or set
them to a mode other than AUTO or high speed
wiper operation.
Wa r n i n g m e s s a g eDetails/Actions
(U.S.A.) (Canada) (Flashes)
(U.S.A.) (Canada)

5168-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
●The needle of the engine coolant temperature gauge (P. 81) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●“Engine Coolant High Temperature” is shown on the multi-information dis-
play.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5178-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D18U)
Engine coolant reservoir:
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir.
Reservoir cap
“FULL” line
“LOW” line
Intercooler coolant reservoir (IS200t only):
The coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the engine is cold.
Reservoir cap
“F” line
“L” line4
IS350/IS300IS200t
1
2
3
1
2
3

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.

5319-1. Specifications
9
Vehicle specifications
IS350/300/200t_U (OM53D18U)
■Spark plug
Cooling system
Capacity
IS350/IS300 10.1 qt. (9.6 L, 8.4 Imp. qt.)
IS200t
Engine
8.2 qt. (7.8 L, 6.9 Imp. qt.)
Intercooler
3.2 qt. (3.0 L, 2.6 Imp. qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethy lene glycol-based non-
silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Ignition system
IS350/IS300IS200t
Make DENSO FK20HBR11 NGK DILFR7K9G
Gap0.043 in. (1.1 mm)0.035 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68F
(20 C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11.8
 12.0 V Discharged
(Check the voltage 20 minutes after the engine and all
lights are turned off.)
Charging rates5 A max.

5479-1. Specifications
9
Vehicle specifications
IS350/300/200t_U (OM53D18U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
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
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
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)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
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 con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

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