2016 LEXUS NX200T cooling

5848-2. Steps to take in an emergency
NX200t_OM_USA_OM78081U
If your vehicle overheats
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.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( P. 8 7 ) e n t e r s t h e
red zone, or a loss of engine power is experienced. (For example, the vehi-
cle speed does not increase.)
●“Engine Coolant Temp High” is shown on the multi-information display.
●Steam comes out from under the hood.
Correction procedures
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2
3
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5858-2. Steps to take in an emergency
8
When trouble arises
NX200t_OM_USA_OM78081U
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir.
Add coolant if necessary.
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 these, 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 an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
4
EngineIntercooler radiator
Reservoir
“FULL” line
“LOW” line
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2
3
5
EngineIntercooler radiator
Water can be used in an emerge ncy if coolant is unavailable.
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5868-2. Steps to take in an emergency
NX200t_OM_USA_OM78081U
Check if “Engine Coolant Temp High” is shown on the multi-information dis-
play.
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.
WA R N I N G
■To prevent an accident or injury when in specting 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 h ood, 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.
●Do not loosen the coolant reservoir cap while the engine and radiator are hot.
High temperature steam or coolant could spray out.
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.
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5949-1. Specifications
NX200t_OM_USA_OM78081U
*: The coolant capacity is the quantity of reference. If replacement is necessary, contact your Lexus dealer.
Cooling system
Capacity*
Gasoline
engine8.3 qt. (7.9 L, 7.0 Imp.qt.)
Intercooler3.1 qt. (2.9 L, 2.6 Imp.qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeNGK DILFR7K9G
Gap0.04 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 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the engine
and all lights ar e turned off.)
Charging rates5 A max.

645Alphabetical index
NX200t_OM_USA_OM78081U
CoolantCapacity ................................................ 594
Checking............................................... 496
Preparing and checking before winter ......................................317
Warning light ...................................... 550
Cooling system ..................................... 496 Engine overheating.......................... 584
Cornering lights ...................................... 212
Cruise control Cruise control..................................... 258
Dynamic radar cruise control........231
Dynamic radar cruise control with full-speed range .................... 244
Cup holders ............................................ 438
Curtain shield airbags ........................... 38
Customizable features .........................614 Daytime running light system............ 212
Deck board..............................................442
Deck under tray ...................................... 441
Defogger
Outside rear view mirrors ............ 425
Rear window ........................................ 425
Windshield............................................ 425
Differential .............................................. 595
Dimension ............................................... 590
Dinghy towing ......................................... 192
Display Drive information .................................. 92
Dynamic radar cruise control ....... 231
Dynamic radar cruise control with full-speed range ................... 244
LDA (Lane Departure Alert with steering control) ..................... 261
Multi-information display.................... 91
Warning messages .......................... 557
Do-it-yourself maintenance............. 486D