674
ES350 300h_OM_OM33A01U_(U)
6-3. Do-it-yourself maintenance
XHybrid vehicles (2AR-FXE engine)
■12-volt battery (hybrid vehicles)
→P. 6 9 0
Washer fluid tank ( →P. 689)
Fuse boxes ( →P. 712)
Power control unit coolant
reservoir ( →P. 6 8 1 )
Engine oil level dipstick (→P. 6 76 )
Engine oil filler cap (→P. 6 7 8 ) Engine coolant reservoir
(→P. 6 8 1 )
Brake fluid reservoir (→P. 6 8 4 )
Power control unit coolant
radiator ( →P. 683)
Electric cooling fans
Condenser ( →P. 683)
Engine coolant radiator (→P. 683)1
2
3
4
5
6
7
8
9
10
11
ES350 300h_OM_OM33A01U_(U)
6816-3. Do-it-yourself maintenance
6
Maintenance and care
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
■Engine coolant reservoirReservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. ( →P. 813, 816)
■Power control unit coolant reservoir (hybrid vehicles)
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. ( →P. 8 1 6 )
Coolant
1
2
3
1
2
3
682
ES350 300h_OM_OM33A01U_(U)
6-3. Do-it-yourself maintenance
■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 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 radiator, 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 system.
CAUTION
■When the engine is hot
Do not remove the engine/power control unit coolant reservoir caps.
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 cooling. 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.
