2016 LEXUS NX200T coolant temperature

5488-2. Steps to take in an emergency
NX200t_OM_USA_OM78081U
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air co nditioning 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 misfire or misses, st umbling 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 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

5508-2. Steps to take in an emergency
NX200t_OM_USA_OM78081U
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1 Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1Low engine oil pressure warning light (warning buzzer)
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1High coolant temperature warning light (warning buzzer)
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe place. Continuing to drive
the vehicle may be dangerous.
Handling method ( P. 5 8 4 )
Brake system warning light
Indicates a malfunction in the electric parking brake
 Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
 Have the vehicle inspected by your Lexus dealer immediately.

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
1
2
3
1
2

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
1
2
3
5
EngineIntercooler radiator
Water can be used in an emerge ncy if coolant is unavailable.
6
7

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.
8

647Alphabetical index
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EngineAccessory mode................................. 194
Compartment ..................................... 490
Engine switch ........................................ 193
Hood ....................................................... 488
How to start the engine ................... 193
Identification number .......................592
If your vehicle has to be stopped in an emergency ........... 541
Ignition switch (Engine switch) .... 193
Overheating ........................................ 584
Engine compartment cover ...............491
Engine coolant Capacity ................................................ 594
Checking............................................... 496
Preparing and checking before winter ......................................317
Warning light ...................................... 550
Engine coolant temperature gauge ........................................................ 87
Engine immobilizer system ................. 75
Engine oil Capacity .................................................592
Checking................................................492
Warning light ...................................... 550
Engine oil maintenance data ........... 494
Engine switch ...........................................193
EPS (Electronic Power Steering) Function .................................................. 297
Warning light ........................................ 551
Event data recorder (EDR) ...................10 Flat tire ...................................................... 560
Floor mats....................................................26
Fluid
Automatic transmission ..................595
Brake........................................................596
Washer .................................................... 501
Fog lights Replacing light bulbs ....................... 537
Switch ........................................................218
Front passenger occupant classification system ............................. 51
Front passenger’s seat belt reminder light ..................................... 552
Front seats ................................................. 137 Adjustment.............................................. 137
Cleaning................................................. 476
Correct driving posture .................... 28
Driving position memory.................145
Head restraints .....................................149
Power easy access system .............145
Seat heaters ..........................................430
Seat position memory .......................145
Front side marker lights Light switch.............................................210
Replacing light bulbs .......... 530, 537
Wattage ................................................ 598F

658Alphabetical index
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TransmissionAutomatic transmission ................... 198
Selecting a driving mode ............... 294
Trip meters ................................................. 87
Turn signal lights Replacing light bulbs............................. 530, 532, 537
Turn signal lever ................................ 203
Wattage ................................................. 598
USB memory.......................................... 367
USB port .................................................. 335
Vanity lights Vanity lights ..........................................445
Wattage ................................................. 598
Vanity mirrors ........................................ 445 Vanity lights ..........................................445
Vehicle data recordings .......................... 9
Vehicle identification number .......... 591
Vehicle Stability Control (VSC) .... 297
Voice command system ......................413
VSC (Vehicle Stability Control) .... 297 Warning buzzers
Approach warning ...............236, 250
Downshifting ..........................................201
Intuitive parking assist.......................273
Light reminder ...................................... 213
Open door .............................................. 118
Seat belt reminder............................. 552
Warning lights ABS ........................................................... 551
Brake hold operated indicator .... 551
Brake Override System ................. 552
Brake system ...................................... 550
Charging system .............................. 550
Drive-Start Control .......................... 552
Electric power steering ................... 551
High coolant temperature ........... 550
Low engine oil pressure ............... 550
Low fuel level ....................................... 552
Malfunction indicator lamp.......... 550
Master warning light ........................ 552
Parking brake indicator ................... 551
PCS warning light .............................. 551
Seat belt reminder light .................. 552
Slip indicator ......................................... 551
SRS............................................................. 551
Tire pressure ........................................ 552
Warning messages...............................557
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