LEXUS RX450h 2015 Owners Manual

6514-3. Do-it-yourself maintenance
4
Maintenance and care Hood
CAUTION■
Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion and
cause an accident, which may result in death or serious injury.Release the lock from the inside of the vehicle to open the hood.
Pull the hood lock release lever. The hood will pop up slightly.
Pull up the hood catch and lift
the hood.STEP 1
STEP 2

6524-3. Do-it-yourself maintenance
Positioning a floor jack When raising your vehicle with a floor jack, position the jack correctly.
Improper placement may damage your vehicle or cause injury.
■ Front
■ Rear

6534-3. Do-it-yourself maintenance
4
Maintenance and care CAUTION■
When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of death or
serious injury:
●
When using a floor jack, follow the instructions of the manual provided with the
jack.●
Do not use the jack that wa s supplied with your vehicle.●
Do not put any part of your body underneath the vehicle when it is supported
only by the floor jack.●
Always use floor jack and/or automotive jack stands on a solid, flat, level surface.●
Do not start the hybrid system while the vehicle is supported by the floor jack.●
Stop the vehicle on level, firm ground, firmly set the parking brake and shift the
shift lever to P.●
Make sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehi-
cle and may cause the vehicle to fall off the floor jack.●
Do not raise the vehicle while someone is in the vehicle.●
When raising the vehicle, do not place any objects on top of or underneath the
floor jack. ●
Lift up the vehicle using a floor jack such as
the one shown in the illustration.

6544-3. Do-it-yourself maintenance
Engine compartment
Brake fluid reservoir
(  P. 6 6 2 )
Engine oil filler cap
(  P. 6 5 7 )
Engine oil level dipstick
(  P. 6 5 6 )
Power control unit coolant
reservoir (  P. 6 5 9 )
Fuse boxes (  P. 6 8 9 ) Engine coolant reservoir
(  P. 6 5 9 )
Condenser (  P. 6 6 1 )
Radiator (  P. 6 6 1 )
Electric cooling fans
Power control unit coolant
radiator (  P. 6 6 1 )
Washer fluid tank (  P. 663)

6554-3. Do-it-yourself maintenance
4
Maintenance and care Engine compartment cover
■ Removing the engine compartment covers
Outside
Front
■ Installing the clips

6564-3. Do-it-yourself maintenance
Engine oil
With the engine at operating temperat ure and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level grou nd. 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.NOTICE■
After installing an engine compartment cover
Make sure that the cover is securely installed in its original position.
STEP 1
STEP 2
STEP 3
STEP 4

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

6584-3. Do-it-yourself maintenance
■
Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following situ-
ations, oil consumption may increase, and engine oil may need to be refilled in
between oil maintenance intervals. ●
When the engine is new, for example di rectly after purchasing the vehicle or
after replacing the engine●
If low quality oil or oil of an inappropriate viscosity is used●
AWD models with towing package: When driving at high engine speeds or with
a heavy load, when towing, or when driving while accelerating or decelerating
frequently●
2WD models and AWD models without towing package: When driving at high
engine speeds or with a heavy load, or when driving while accelerating or
decelerating frequently●
When leaving the engine id ling for a long time, or when driving frequently
through heavy traffic
CAUTION■
Used engine oil ●
Used engine oil contains potentially harmful contaminants which may cause skin
disorders such as inflammati on or skin cancer, so care should be taken to avoid
prolonged 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 dis-
pose of used oil and filters in househol d trash, in sewers or onto the ground.
Call your Lexus dealer, service station or auto parts store for information con-
cerning recycling or disposal.
●
Do not leave used engine oil within the reach of children.

6594-3. Do-it-yourself maintenance
4
Maintenance and care
Coolant
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine and hybrid system are cold.
Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. (  P. 788)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.

6604-3. Do-it-yourself maintenance
Power control unit coolant reservoir
Reservoir cap
“FULL” line
“LOW” line If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. (  P. 788)
■
Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% coolant and
50% deionized water. (Minimum temperature: -31  F [-35  C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45%
deionized water. (Minimum temperature: -44  F [-42  C])
For more details about coolant, contact your Lexus dealer.
■
If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling systems.