radiator cap Lexus GS300 2019 Owner's Manual

378
GS350_300_OM_OM30G96U_(U)6-3. Do-it-yourself maintenance
Engine compartment
GS350
Fuse boxes (
P. 414)
Battery (P. 392)
Engine oil level dipstick (P. 383)
Engine coolant reservoir (P. 388)
Engine oil filler cap ( P. 385) Brake fluid reservoir
(P. 391)
Washer fluid tank ( P. 394)
Electric cooling fans
Condenser ( P. 390)
Radiator ( P. 390)1
2
3
4
5
6
7
8
9
10

GS350_300_OM_OM30G96U_(U)
3796-3. Do-it-yourself maintenance
6
Maintenance and care
GS300
Fuse boxes (P. 414)
Battery (P. 392)
Intercooler coolant reservoir (P. 388)
Engine oil level dipstick (P. 383)
Engine oil filler cap ( P. 385) Engine coolant reservoir
(P. 388)
Brake fluid reservoir (P. 391)
Washer fluid tank ( P. 394)
Condenser ( P. 390)
Electric cooling fans
Radiator ( P. 390)1
2
3
4
5
6
7
8
9
10
11

380
GS350_300_OM_OM30G96U_(U)6-3. Do-it-yourself maintenance
GS F
Fuse boxes (
P. 414)
Battery (P. 392)
Engine oil level dipstick (P. 383)
Engine coolant reservoir (P. 388)
Engine oil filler cap ( P. 385) Brake fluid reservoir
(P. 391)
Washer fluid tank ( P. 394)
Electric cooling fans
Condenser ( P. 390)
Radiator ( P. 390)1
2
3
4
5
6
7
8
9
10

GS350_300_OM_OM30G96U_(U)
3896-3. Do-it-yourself maintenance
6
Maintenance and care
■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.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixt ure of 50% coolant and 50% deionized water.
(Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Cool ant” 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 radiator, hoses, engine coolant reservoir caps, drain cock and water
pump.
If you cannot find a leak, have your Lexus de aler test the cap and check for leaks in the
cooling system.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap, the intercooler coolant reservoir cap
or the coolant inlet cap. ( P. 516)
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.

5167-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
WARNING
■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 h ood, do not open the hood until the steam
has subsided. The engine compartment may be very hot.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and
belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-
ous injury.
●GS350: Do not loosen the coolant inlet cap
or the engine coolant reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could
spray out.
●GS F: Do not loosen the engine coolant res-
ervoir cap while the engine and radiator are
hot.
High temperature steam or coolant could
spray out.
●GS300: Do not loosen the coolant inlet cap,
the engine coolant rese rvoir cap or the inter-
cooler coolant reservoir cap while the engine
and radiator are hot.
High temperature steam or coolant could
spray out.

595Alphabetical index
GS350_300_OM_OM30G96U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 266
Radiator .................................................... 390
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 327
Rear door sunshades .......................... 347
Rear personal lights............................. 336
Rear side marker lights ...................... 222 Light switch ........................................... 222
Replacing light bulbs ........................ 422
Welcome light illumination control ......................... 144
Rear seat heaters....................................331
Rear sunshade ....................................... 347 Operation .............................................. 347
Reverse operation feature............ 348 Rear turn signal lights ........................... 216
Replacing light bulbs ....................... 422
Turn signal lever ................................... 216
Rear view mirror Inside rear view mirror...................... 175
Outside rear view mirrors .............. 177
Rear view monitor system
*
Rear window defoggers .....................322
Refueling...................................................234 Capacity................................................. 525
Fuel types............................................... 525
Opening the fuel tank cap ............ 236
When the fuel filler door cannot be opened ..........................237
Remote Touch
*......................................310
Replacing Electronic key battery ....................... 412
Fuses .......................................................... 414
Light bulbs............................................. 420
Tires .......................................................... 475
Rev indicator ..................................... 94, 101
Rev peak ............................................94, 102
Reporting safety defects for U.S. owners .................................. 566
Resetting the message indicating maintenance is required ................ 368
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.