radiator cap Lexus GS300h 2015 Owner's Manual

419
6
6-3. Do-it-yourself maintenance
Maintenance and care
GS450h_300h_OM_OM30F00E_(EE)
Engine compartment
XGS450h
■12-volt battery
→
P. 4 2 8
Engine oil level dipstick
(→ P. 422)
Engine coolant reservoir (→ P. 4 2 5 )
Engine oil filler cap ( →P. 4 2 3 )
Power control unit coolant
reservoir ( →P. 4 2 5 ) Fuse box (
→P. 4 5 3 )
Wa s h e r f l u i d t a n k ( →P. 4 2 7 )
Electric cooling fans
Condenser ( →P. 4 2 7 )
Radiator ( →P. 4 2 7 )1
2
3
4
5
6
7
8
9

4206-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F00E_(EE)
XGS300h
■12-volt battery
→P. 4 2 8
Power control unit coolant
reservoir ( →P. 4 2 5 )
Engine oil level dipstick (→ P. 422)
Engine oil filler cap ( →P. 4 2 3 )
Engine coolant reservoir (→ P. 4 2 5 ) Fuse box (
→P. 4 5 3 )
Wa s h e r f l u i d t a n k ( →P. 4 2 7 )
Electric cooling fans
Condenser ( →P. 4 2 7 )
Radiator ( →P. 4 2 7 )1
2
3
4
5
6
7
8
9

4266-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F00E_(EE)
■Coolant selection
Only use “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.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water.
(Minimum temperature: -35 °C [-31 °F])
For more details about coolant, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir caps,
drain cock and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional, test the cap and check for leaks in the cooling sys-
tem.
WA R N I N G
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps or the coolant
inlet cap. ( →P. 5 6 1 )
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

5617-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
WA R N I N G
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the steam
has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the indicator on the power
switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically start, or
the cooling fan may suddenly operate even if the gasoline engine stops. Do not touch
or approach rotating parts such as the fan, which may lead to fingers or clothing
(especially a tie, a scarf or a muffler) ge tting caught, resulting in serious injury.
●Do not loosen the coolant inlet cap or the
coolant reservoir caps while the hybrid sys-
tem and radiator are hot.
High temperature steam or coolant could
spray out.XGS450h
XGS300h

613Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Power control unit coolant ............... 425Capacity ................................................. 572
Checking ............................................... 425
Preparing and checking before
winter....................................................354
Power easy access system ................ 178
Power outlets .........................................399
Power steering.......................................345
Warning light ....................................... 477
Warning message.............................482
Power switch ............................................217 Auto power off function ...................219
Changing the power switch modes ................................................... 218
If your vehicle has to be stopped in an emergency..........469
Starting the hybrid system............... 217
Power trunk lid........................................ 146
Power windows ...................................... 193 Door lock linked window
operation ..............................................194
Jam protection function....................193
Operation ................................................193
Window lock switch...........................193
Pre-Crash Safety system (PCS)..... 269 Function ..................................................269
Warning light ....................................... 477
Warning message.............................482 Radar cruise control (dynamic
radar cruise control) ..........................315Radar cruise control (dynamic
radar cruise control with
full-speed range)............................ 303
Radiator .....................................................427
Radio
*
Radio Data System (RDS)*
Rear air conditioning system ........... 378
Rear door sunshades ..........................400
Rear fog light .......................................... 249 Replacing light bulb ......................... 465
Switch ...................................................... 249
Rear personal lights............................. 387
Rear seat heaters.................................. 382
Rear sunshade .......................................400 Operation .............................................400
Reverse operation feature ..............401
Rear turn signal lights ......................... 230
Replacing light bulbs ....................... 465
Turn signal lever................................. 230
Rear view mirror Inside rear view mirror
*
Outside rear view mirrors ..............190
Rear view monitor system
*
Rear window defogger ..................... 372
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.