water pump Lexus HS250h 2010 Basic Information Before Operation / LEXUS 2010 HS250H OWNERS MANUAL (OM75006U)

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Power control unit 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. 5 5 2 )
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a s
imilar 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% d
eionized 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
ca
ps, drain cock and water pump. 
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the coo
ling systems.