Page 499 of 680

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.
Page 507 of 680

5077-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_OM_USA_OM78082U
WA R N I N G
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin dis-
orders such as inflammation and skin canc er, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a sa fe and acceptable manner. Do not dispose of
used oil and filters in household trash, in sewers or onto the ground. Call your Lexus
dealer, service station or auto parts store for information concerning recycling or dis-
posal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
Page 574 of 680

5748-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
■If “Depress Brake When Vehicle Is Stopped Hybrid System May Overheat” is shown
Message is displayed when the accelerator pedal is depressed to maintain the vehicle
position when stopped on a upward slope, etc.
If this continues, the hybrid system may overheat.
Release the accelerator pedal and depress the brake pedal.
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed. (The indicator will not work
properly unless the oil maintenance data has been reset.)
Check the engine oil, and change if necessary. After changing the engine oil, the oil
change system should be reset. ( P. 5 0 6 )
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be change d. (After the engine oil is changed and the
oil maintenance data has been reset.)
Check and change the engine oil, and oil filter by your Lexus dealer. After changing the
engine oil, the oil change system should be reset. ( P. 5 0 6 )
■If “See Owner’s Manual” is shown
●If the following messages are shown, following the instructions, accordingly.
• “Engine Coolant Temp High” ( P. 5 9 9 )
●If the following messages are sh own, there may be a malfunction.
Immediately have the vehicle inspected by your Lexus dealer.
• “Hybrid System Malfunction”
•“Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Braking Power Low”
• “Smart Access System Malfunction”
●If the following messages are sh own, there may be a malfunction.
Immediately stop the vehicle in a safe place and contact your Lexus dealer. Continuing
to drive the vehicle may be dangerous.
•“Low Oil Pressure”
• “Charging System Malfunction”
■Warning buzzer
P. 5 6 9
NOTICE
■“High Power Consumption Partial Limit On AC/Heater Operation” is frequently
shown
There is a possible malfunction relating to the charging system or the 12-volt battery
may be deteriorating. Have the vehicle inspected by your Lexus dealer.
Page 609 of 680
6099-1. Specifications
9
Vehicle specifications
NX300h_OM_USA_OM78082U
*: The engine oil capacity is a reference quantity to be used when changing the engineoil. Warm up the engine and turn off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
Hybrid battery (traction battery)
Ty p eNickel-Metal hydride battery
Vo l t a g e7. 2 V/m o d u l e
Capacity6.5 Ah (3HR)
Quantity34 modules
Overall voltage244.8 V
Lubrication system
Oil capacity
(Drain and refill — reference
*)
With filter
Without filter4.6 qt. (4.4 L, 3.9 Imp.qt.)
4.2 qt. (4.0 L, 3.5 Imp.qt.)
Page 680 of 680
680
NX300h_OM_USA_OM78082UGAS STATION INFORMATION
*: Vehicles with a power back door
Auxiliary catch leverBack door opener switch*Fuel filler door
P. 5 0 0 P. 1 3 0 P. 2 3 7
Hood lock release leverTire inflation pressure
P. 5 0 0 P. 6 1 3
Fuel tank capacity
(Reference) 14.8 gal. (56 L, 12.3 Imp.gal.)
Fuel type
Unleaded gasoline only P. 608
Cold tire inflation
pressure P. 6 1 3
Engine oil capacity
(Drain and refill —
reference)With filter
Without filter 4.6 qt. (4.4 L, 3.9 Imp.qt.)
4.2 qt. (4.0 L, 3.5 Imp.qt.)
Engine oil type“Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
P. 6 1 0