2018 LEXUS RX450h oil level

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987432
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RX450h_RX450hL _U_OM48F85U 659-1. Specifications
Maintenance data
(fuel, oil level, etc.) ....................710
Fuel information ......................... 720
Tire information .......................... 723
9-2. Customization
Customizable features ............ 736
9-3. Initialization
Items to initialize......................... 749
Reporting safety defects for
U.S. owners ........................................... 752
Seat belt instructions for
Canadian owners (in French) ............ 753
SRS airbag instructions for
Canadian owners (in French)........ 754
Headlight aim instructions for
Canadian owners (in French)........ 762 What to do if...
(Troubleshooting)............................... 766
Alphabetical index ................................ 7709
Vehicle specifications
10
For owners Index
For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL” for information re garding the equipment listed below.
• Navigation system
• Audio/visual system • Panoramic view monitor
•Lexus Enform

5897-2. Maintenance
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Maintenance and care
RX450h_RX450hL _U_OM48F85UGeneral maintenance Listed below are the general maintenanc e items that should be performed at
the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende d that any problem you notice should
be brought to the attention of your Lexu s dealer or qualified service shop for
advice.
Engine compartment Items Check points
Brake fluid Is the brake fluid at the correct level? ( → P. 603)
Engine/power control unit
coolant Is the engine/power control unit coolant at the correct
level?( → P. 601)
Engine oil Is the engine oil at the correct level?( → P. 598)
Exhaust system There should not be any fumes or strange sounds.
Radiator/condenser The radiator and condenser should be free from
foreign objects. ( → P. 602)
Washer fluid Is there sufficient washer fluid?( → P. 604)
Luggage compartment Items Check points
12-volt battery Check the connections. ( → P. 605)

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RX450h_RX450hL _U_OM48F85U 7
Maintenance and care 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections. Items Parts and tools
12-volt battery con-
dition ( → P. 605) •Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( → P. 603) • 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. 601) • “Toyota Super Long Life Coolan t” 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 Cool ant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
( → P. 598) • “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( → P. 632) • Fuse with same amperage rating as original
Headlight aim
*( → P. 635) • Phillips-head screwdriver
Light bulbs
( → P. 637) • Bulb with same number and wattage rating as original
• Flathead screwdriver •Wrench
Radiator and con-
denser ( → P. 602) ⎯
Tire inflation pres-
sure ( → P. 620) • Tire pressure gauge • Compressed air source

5977-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL _U_OM48F85U■
12-volt battery
→ P. 605Engine compartment
Washer fluid tank ( → P. 604)
Brake fluid reservoir ( → P. 603)
Engine oil level dipstick
( → P. 598)
Engine coolant reservoir
( → P. 601)
Power control unit coolant reservoir
( → P. 601) Fuse boxes ( → P. 632)
Radiator ( → P. 602)
Power control unit coolant
radiator ( → P. 602)
Condenser ( → P. 602)
Electric cooling fans
Engine oil filler cap ( → P. 599)1
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3
4
5 6
7
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9
10
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598 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85UWith 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. Afte r 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.
Holding a rag under the end, pull
the dipstick out and check the oil
level.
Low
Normal
Excessive
The shape of the dipstick may dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.Engine oil 1
2
3
4
5
1
2
3
6

5997-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL _U_OM48F85U■
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 counterclockwise.
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 consumed while driving. In th e following situations,
oil consumption may increase, and engine oil 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 decelerating frequently ●
When leaving the engine idling for a long time, or when drivin g frequently through
heavy trafficEngine oil selection → P. 714
Oil quantity (Low → Full) 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Items Clean funnel1
2
3

600 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85U■
After changing the engine oil
The engine oil maintenance data should be reset. Perform the following procedures:
Select on the multi-information display. ( → P. 108)
Press or of the meter control switch, select the “Vehicle Settings” then “Oil
Maintenance”. (To conf irm setting, press .)
Select the “Yes” and push .
A message is displayed on th e multi-information display.
WARNING ■
Used engine oil ●
Used engine oil contains potentially harm ful contaminants which may cause skin dis-
orders such as inflammation and skin cance r, 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 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 fille r cap is properly tightened. 1
2
3
4

709
9Vehicle specifications
RX450h_RX450hL _U_OM48F85U 9-1. Specifications
Maintenance data
(fuel, oil level, etc.) ................... 710
Fuel information.......................... 720
Tire information .......................... 723
9-2. Customization
Customizable features ............ 736
9-3. Initialization
Items to initialize ......................... 749