2015 LEXUS NX300h engine oil

498 7-3. Do-it-yourself maintenance
NX300h_U_OM78007UDo-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections. Items Pa r t s a n d t o o l s
12-volt battery con-
dition (  P. 5 1 2 ) •Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(  P. 5 1 0 ) • FMVSS No.116 DOT 3 or SAE J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power con-
trol unit coolant level
(  P. 5 0 8 ) • “Toyota Super Long Life Coolant” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 5 0 4 ) • “Toyota Genuine Motor Oil” or equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (  P. 5 3 4 ) • Fuse with same amperage rating as original
Light bulbs
(  P. 5 3 8 ) • Bulb with same number and wattage rating as original
• Phillips-head screwdriver •Flathead screwdriver
•Wrench
Radiator and con-
denser (  P. 5 0 9 ) 
Tire inflation pres-
sure (  P. 5 2 5 ) •Tire pressure gauge • Compressed air source
Wa s h e r f l u i d
(  P. 511) • Water or washer fluid containi ng antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

4997-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_U_OM78007U 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.

502 7-3. Do-it-yourself maintenance
NX300h_U_OM78007UEngine compartment
■
12-volt battery
 P. 5 1 2Fuse box (  P. 5 3 4 )
Engine coolant reservoir
(  P. 5 0 8 )
Engine oil filler cap (  P. 505)
Power control unit coolant reservoir
(  P. 5 0 8 )
Brake fluid reservoir (  P. 5 1 0 ) Radiator (  P. 5 0 9 )
Condenser (  P. 5 0 9 )
Electric cooling fans
Engine oil level dipstick
(  P. 5 0 4 )
Wa s h e r f l u i d t a n k (  P. 5 1 1 )1
2
3
4
5 6
7
8
9
10

504 7-3. Do-it-yourself maintenance
NX300h_U_OM78007U With the engine at operating temperatur e and turned off, check the oil level on
the dipstick. ■
Checking the engine oil
Park the vehicle on level ground. After warming up the engine and turning
off the hybrid system, wait more than 5 minutes for the oil to drain back into
the bottom of the engine.
Holding a rag under the end, pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully with its
protruding areas ( in the illus-
tration) pointing towards engine.
Holding a rag under the end, pull the dipstick out and check the oil level.
Low
Normal
Excessive
Wipe the dipstick and reinsert it fully.Engine oil 1
2
3
4
1
5
Measuring side1
2
3
6

5057-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_U_OM78007U ■
Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of the
same type as that already in the
engine.
Make sure to check the oil type and prepare the items needed before adding
oil.
Remove the oil filler cap by turning it coun terclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise. ■
Engine oil consumption
A certain amount of engine oil will be consum ed while driving. In th e following situations,
oil consumption may increase, and engine o il may need to be refilled in between oil
maintenance intervals. ●
When the engine is new, for example directly after purchasing the vehicle or after
replacing the engine ●
If low quality oil or oil of an inappropriate viscosity is used●
When driving at high engine speeds or with a heavy load, when towing, or when driving
while accelerating or de celerating frequently●
When leaving the engi ne idling for a long time, or when driving frequently through
heavy trafficEngine oil selection  P. 6 1 2
Oil quantity (Low  Full) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items Clean funnel1
2
3

506 7-3. Do-it-yourself maintenance
NX300h_U_OM78007U ■
After changing the engine oil
The engine oil maintenance da ta should be reset. Perform the following procedures:
Press of the meter control switch.
Press or of the meter control switch,
select , and then press .
Press or of the meter control switch,
select the “Oil Mainte nance” screen and then
press and hold the .
Select the “Yes” and push .
A message is displayed on the multi-informa-
tion display. 1
2
3
4
5

5077-3. Do-it-yourself maintenance
7
Maintenance and care
NX300h_U_OM78007U WA R N I N G ■
Used engine oil ●
Used engine oil contains potentially harm ful 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 safe 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 reac h 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.

565
8
When trouble arises 8-2. Steps to take in an emergency
NX300h_U_OM78007UIf 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 light Warning 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.
* 1
Low 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.
* 1
High 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. 600)
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system;
• The electronically controlled brake system; or
• 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 hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The emission control system
 Have the vehicle inspected by your Lexus dealer immediately.