2015 LEXUS RX450h Imp. qt.

6574-3. Do-it-yourself maintenance
4
Maintenance and care Holding a rag under the end, pull the dipsti ck 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.
■ Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as th at already in the
engine.
Make sure to check th e 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.STEP 5
STEP 6
Engine oil
selection  P. 8 0 2
Oil quantity
(Low  Full) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
Items Clean funnel
STEP 1
STEP 2
STEP 3

8026-1. Specifications
Lubrication system
*: 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. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the follow-
ing grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oilOil capacity
(Drain and refill 
reference*)
With filter 6.4 qt. (6.1 L, 5.4 Imp. qt.)
Without filter 6.0 qt. (5.7 L, 5.0 Imp. qt.)

8046-1. Specifications
Cooling system
* : With towing package
Ignition systemCapacity
Gasoline engine
Power control unit 12.0 qt. (11.4 L, 10.0 Imp. qt.)
12.4 qt. (11.7 L, 10.3 Imp. qt.)*
1.9 qt. (1.8 L, 1.6 Imp. qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO FK20HR11
0.043 in. (1.1 mm)
NOTICE■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

8056-1. Specifications
6
Vehicle specifications Electrical system
Hybrid Transaxle
* : The fluid capacity is a reference quantity. If replacement is necessary, contact
your Lexus dealer.12-volt battery
Open voltage* at
68  F (20  C): 12.6  
12.8 V Fully charged
12.2  
12.4 V Half charged
11.8  
12.0 V Discharged
(*: Voltage checked 20 minutes after the hybrid sys-
tem and all the lights are turned off)
Charging rates 5 A max.
Fluid capacity*
Front 4.9 qt. (4.6 L, 4.0 Imp. qt.)
Rear (AWD models) 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE■
Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ultimately dam-
age the hybrid transmission of your vehicle.

876 GAS STATION INFORMATIONAuxiliary catch lever
P. 6 5 1 Back door opener
P. 7 5Fuel filler door
P. 119
Hood lock release lever
P. 6 5 1 Fuel filler door opener
P. 1 1 9 Tire inflation pressure
P. 8 0 7
Fuel tank capacity
(Reference) 17.1 gal. (65 L, 14.2 Imp. gal.)
Fuel type Unleaded gasoline only P. 800
Cold tire inflation
pressure P. 8 0 7
Engine oil capacity
(Drain and refill
 reference) qt. (L, Imp. qt.)
With filter 6.4 (6,1, 5,4)
Without filter 6.0 (5,7 ,
5.0 )
Engine oil type
“Toyota Genuine Motor Oil” or equivalent P. 802