Page 440 of 680

4406-1. Using the air conditioning system and defogger
NX300h_OM_USA_OM78082U
Heated steering wheel/seat heaters/seat ventila-
tors
: If equipped
Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats.
WA R N I N G
●Care should be taken to prevent injury if anyone in the following categories comes in
contact with the steering wheel an d seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold
remedies, etc.)
●Observe the following precautions to prevent minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat heater.
• Do not use seat heater more than necessary.
NOTICE
●Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
●To prevent 12-volt battery discharge, do not use the functions when the hybrid system
is off.
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4416-1. Using the air conditioning system and defogger
6
Interior features
NX300h_OM_USA_OM78082U
Turns the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
■Operation condition
●The heated steering wheel can be used when the power switch is in ON mode.
■Timer
●The heated steering wheel will automati cally turn off after about 30 minutes.
Vehicles without seat ventilators
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit) Mid (2 segments
lit) Lo (1 segment lit) Off
The level indicator (amber) light up dur-
ing operation.
Vehicles with seat ventilators
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit) Mid (2 segments
lit) Lo (1 segment lit) Off
The indicator (amber) and level indica-
tor (green) light up during operation.
■Operation condition
The seat heaters can be used when the power switch is in ON mode.
Heated steering wheel
Seat heaters
Level
indicator
Level
indicator
Page 442 of 680
4426-1. Using the air conditioning system and defogger
NX300h_OM_USA_OM78082U
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit) Mid (2 segments
lit) Lo (1 segment lit) Off
The indicator (green) and level indicator
(green) light up during operation.
■Operation condition
The seat ventilators can be used when the power switch is in ON mode.
Seat ventilators
Level
indicator
Page 464 of 680

4646-4. Other interior features
NX300h_OM_USA_OM78082U
NOTICE
■Conditions in which the function may not operate correctly
In the following conditions, it may not operate correctly
●The portable device is fully charged
●There is foreign matter between the charge area and portable device
●The temperature of the portable device gets higher from charging
●The charging surface of the portable device is facing up
●The placement of the portable device is out of alignment with the charge area
●Near a TV tower, electric power plant, gas station, radio station, large display, airport
or other facility that generates strong radio waves or electrical noise
●When the electronic key is in contact with , or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
•Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio waves) are being used nearby
In addition, excluding the above-mentioned, when the charger does not perform nor-
mally or the operation display lamp is flashi ng continuously, it is considered that the
wireless charger is malfunctioning. Contact your Lexus dealer.
■To prevent failure or damage to data
●Do not bring magnetic cards, such as credit cards, or magnetic recording media, etc.,
close to the charger while charging, otherw ise, data may disappear under the influ-
ence of magnetism. Also, do not bring pr ecision instruments such as wrist watches,
etc., close to the charger, as such objects may break.
●Do not leave portable devices in the cab in. The temperature inside the cabin may
become high, when under the sun, and cause damage to the device.
■To prevent 12-volt battery discharge
When the hybrid system is stopped, do not use the wireless charger for a long time.
Page 480 of 680

4806-4. Other interior features
NX300h_OM_USA_OM78082U
■Automatic Collis ion Notification
In case of either airbag deployment or severe rear-end collision, the system is
designed to automatically call the response center. The responding agent
receives the vehicle’s location and attempts to speak with the vehicle occu-
pants to assess the level of emergency. If the occupants are unable to commu-
nicate, the agent automatically treats the call as an emergency, contacts the
nearest emergency services provider to describe the situation, and requests
that assistance be se nt to the location.
■Stolen Vehicle Location
If your vehicle is stolen, Safety Connect can work with local authorities to
assist them in locating and recovering the vehicle. After filing a police report,
call the Safety Connect response center at 1-800-25-LEXUS
(1-800-255-3987) and follow the prompts for Safety Connect to initiate this
service.
In addition to assisting law enforcement with recovery of a stolen vehicle,
Safety-Connect-equipped vehicle location data may, under certain circum-
stances, be shared with third parties to locate your vehicle. Further informa-
tion is available at Lexus.com.
■Emergency Assistance Button (“SOS”)
In the event of an emergency on the ro ad, push the “SOS” button to reach the
Safety Connect response center. Th e answering agent will determine your
vehicle’s location, assess the emergency, and dispatch the necessary assis-
tance required.
If you accidentally press the “SOS” button, tell the response-center agent that you
are not experiencing an emergency.
■Enhanced Roadside Assistance
Enhanced Roadside Assistance adds GP S data to the already included war-
ranty-based Lexus roadside service.
Subscribers can press the “SOS” button to reach a Safety Connect response-
center agent, who can help with a wide range of needs, such as: towing, flat
tire, fuel delivery, etc. For a description of the Roadside Assistance services
and their limitations, please see the Safety Connect Terms and Conditions,
which are available at Lexus.com.
Safety Connect services
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483
7Maintenance and care
NX300h_OM_USA_OM78082U
7-1. Maintenance and careCleaning and protecting the vehicle exterior................. 484
Cleaning and protecting the vehicle interior ................. 488
7-2. Maintenance Maintenance requirements.............................. 491
General maintena nce .............. 494
Emission inspection and maintenance (I/M)
programs .....................................497
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................ 498
Hood .............................................. 500
Positioning a floor jack .............. 501
Engine compartment ...............502
12-volt battery............................... 512
Tires ................................................... 516
Tire inflation pressure ............... 525
Wheels ........................................... 528
Air conditioning filter ...............530
Electronic key battery .............. 532
Checking and replacing fuses .............................................. 534
Light bulbs.....................................538
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4997-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_OM_USA_OM78082U
WA R N I N G
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the engine compartment
●Make sure that the indicator on the power switch and the “READY” indicator are
both off.
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, power control unit, radiator, exhaust manifold, etc.
right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flamma-
ble.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. ( P. 5 0 9 )
■Safety glasses
Wear safety glasses to prevent flying or fallin g material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air.
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5097-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_OM_USA_OM78082U
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their condi-
tion, have your vehicle inspected by your Lexus dealer.
WA R N I N G
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
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 and condenser
WA R N I N G
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries,
such as burns.
■When the electric cooling fans are operating
Do not touch the engine compartment.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. Be sure the
power switch is off when working near the electric cooling fans or radiator grille.