2016 Lexus GS350 coolant reservoir

396
GS350_200t_GS F_OM_OM30E86U_(U)6-3. Do-it-yourself maintenance
Engine compartment
GS350
Fuse boxes (
P. 4 3 1 )
Battery ( P. 4 1 0 )
Engine oil level dipstick (P. 4 0 1 )
Engine coolant reservoir (P. 4 0 6 )
Engine oil filler cap ( P. 4 0 3 ) Brake fluid reservoir
(P. 4 0 9 )
Wa s h e r f l u i d t a n k ( P. 4 1 2 )
Electric cooling fans
Condenser ( P. 4 0 8 )
Radiator ( P. 4 0 8 )1
2
3
4
5
6
7
8
9
10

GS350_200t_GS F_OM_OM30E86U_(U)
3976-3. Do-it-yourself maintenance
6
Maintenance and care
GS200t
Fuse boxes (P. 4 3 1 )
Battery ( P. 4 1 0 )
Intercooler coolant reservoir (P. 4 0 6 )
Engine oil level dipstick (P. 4 0 1 )
Engine oil filler cap ( P. 4 0 3 ) Engine coolant reservoir
(P. 4 0 6 )
Brake fluid reservoir (P. 4 0 9 )
Wa s h e r f l u i d t a n k ( P. 4 1 2 )
Condenser ( P. 4 0 8 )
Electric cooling fans
Radiator ( P. 4 0 8 )1
2
3
4
5
6
7
8
9
10
11

398
GS350_200t_GS F_OM_OM30E86U_(U)6-3. Do-it-yourself maintenance
GS F
Fuse boxes (
P. 4 3 1 )
Battery ( P. 4 1 0 )
Engine oil level dipstick (P. 4 0 1 )
Engine coolant reservoir (P. 4 0 6 )
Engine oil filler cap ( P. 4 0 3 ) Brake fluid reservoir
(P. 4 0 9 )
Wa s h e r f l u i d t a n k ( P. 4 1 2 )
Electric cooling fans
Condenser ( P. 4 0 8 )
Radiator ( P. 4 0 8 )1
2
3
4
5
6
7
8
9
10

406
GS350_200t_GS F_OM_OM30E86U_(U)6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL”/“F” and “LOW”/“L”
lines on the reservoir when the engine is cold.
■Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” lin e, add coolant up to the “FULL” line.
(  P. 5 2 8 )
■Intercooler coolant reservoir (GS200t only)
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line,
add coolant up to the “F” line.
( P. 5 2 8 )
Coolant
1
2
3
GS350GS200t
GS F
1
2
3

GS350_200t_GS F_OM_OM30E86U_(U)
4076-3. 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 Coolant” is a mixt ure 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 dealer test the cap and check for leaks in the
cooling system.
WA R N I N G
■When the engine is hot
Do not remove the engine coolant reservoir cap, the intercooler coolant reservoir cap
or the coolant inlet cap. ( P. 5 3 2 )
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.

5297-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL”/“F” and “LOW”/“L”
lines on the reservoir. Engine coolant reservoir
“FULL”/“F”
“LOW”/“L”
Coolant inlet cap
Intercooler coolant reservoir4
1
2
3
4
5
GS350GS F
GS200t

5327-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
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.
●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.
●GS200t: Do not loosen the coolant inlet cap,
the engine coolant reservoir cap or the inter-
cooler coolant reservoir cap while the engine
and radiator are hot.
High temperature steam or coolant could
spray out.