Page 470 of 640

4707-3. Do-it-yourself maintenance
RC300h_EE(OM24740E)
WARNING
The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energize d. To avoid death or serious injury, observe the following precautions.
■When working on the engine compartment
●Make sure that the “ACCESSORY” or “IGNITION ON” on the multi-informationdisplay 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, radiator, exhaust manifold, etc. right after drivingas 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 enginecompartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flamma-
ble.
●Be extremely cautious when working on the 12-volt battery. It contains poisonous and corrosive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and damage painted sur- faces. If fluid gets on your hands or in your eyes, flush the affected area with cleanwater immediately.
If you still experience discomfort, consult a doctor.
■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. 480)
■Safety glasses
Wear safety glasses to prevent flying or falling 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.
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when
the fluid level in the accumulator is high. If the reservoir needs frequent refillin g, it may indicate a serious problem.
Page 477 of 640

4777-3. Do-it-yourself maintenance
7
Maintenance and care
RC300h_EE(OM24740E)
WARNING
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin dis- orders such as inflammation and skin cancer, 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 any authorized Lexus dealer or repair er, or another duly qualified and equipped professional, service station or auto parts store for information concerning recycling
or disposal.
●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 554 of 640

5548-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message has been reset.) Check the engine oil, and change if necessary.
After changing the engine oil, the message should be reset.
Indicates that the engine oil should be changed. (Afterthe engine oil is changed and the message has been
reset.) Check and change the engine oil, and oil filter by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional. After changing the engine oil, the message should bereset.
(If equipped)
Indicates that the Automatic High Beam switch ispressed while the headlights are in low beam.
Turn the high beam on and press the Automatic High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)system was turned off, the pre-crash brake system oper-
ation is stopped Operation of the pre-crash brake assist is alsostopped.
Turn the VSC on. (P. 307)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not currently functional because the grille cover or the sen- sor is dirty
Check the grille cover and the sensor and clean them if they are dirty.
Warning messageDetails/Actions
(Flashes)
Page 599 of 640
![LEXUS RX300H 2017 Owners Manual 599
9
9-1. Specifications
Vehicle specifications
RC300h_EE(OM24740E)
■Oil capacity (Drain an d refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing the e LEXUS RX300H 2017 Owners Manual 599
9
9-1. Specifications
Vehicle specifications
RC300h_EE(OM24740E)
■Oil capacity (Drain an d refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing the e](/manual-img/36/58029/w960_58029-598.png)
599
9
9-1. Specifications
Vehicle specifications
RC300h_EE(OM24740E)
■Oil capacity (Drain an d refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing the engine
oil. Warm up the engine and turn off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Lexus recom-
mends the use of approved “Toyota Genuine Motor Oil”. Another motor oil of
matching quality can also be used.
Oil grade:
0W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving ”, SM “Energy-Conserving” or SN
“Resource-Conserving”; or IL SAC multigrade engine oil
15W-40:
API grade SL, SM or SN multigrade engine oil
Recommended viscosity (SAE):
SAE 0W-20 is filled into your Lexus
vehicle at manufacturing, and the
best choice for good fuel economy
and good starting in cold weather.
If SAE 0W-20 oil is not available,
SAE 5W-30 oil may be used. How-
ever, it should be replaced with SAE
0W-20 at the next oil change.
If you use SAE 10W-30 or a higher
viscosity engine oil in extremely low
temperatures, the engine may
become difficult to start, so SAE
0W-20 or 5W-30 engine oil is rec-
ommended.
Lubrication system
With filter4.5 L (4.8 qt., 4.0 Imp. qt.)
Without filter4.1 L (4.3. qt., 3.6 Imp. qt.)
Temperature range anticipated before
next oil change
Preferred
Page 640 of 640
640
RC300h_EE(OM24740E)
GAS STATION INFORMATION
Auxiliary catch leverTrunk openerFuel filler door
P. 471 P. 150 P. 249
Hood lock release leverTire inflation pressure
P. 471P. 604
Fuel tank capacity (Reference) 66 L (17.4 gal., 14.5 Imp. gal.)
Fuel type
EU area: Unleaded gasoline conforming to European
standard EN228 only Except EU area: Unleaded gasoline onlyP. 598, 606
Cold tire inflation
pressure P. 604
Engine oil capacity (Drain and refill — reference)
L (qt., Imp. qt.) With filter 4.5(4.8, 4.0)Without filter 4.1 (4.3, 3.6)
Engine oil type
“Toyota Genuine Motor Oil” or equivalent
Oil grade: 0W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM “Energy- Conserving” or SN “Resource-Conserving”; or ILSACmultigrade engine oil
15W-40: API grade SL, SM or SN multigrade engine oilP. 599