Coolant Selection; If The Coolant Level Drops Within A Short Time Of Replenishing; When The Hybrid System Is Hot - Lexus CT 200h Owner's Manual

Coolant selection

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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.:
Canada: "Toyota Super Long Life Coolant" is a mixture of 55% coolant and
For more details about coolant, contact your Lexus dealer.

If the coolant level drops within a short time of replenishing

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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 hybrid system is hot

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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.
CT200h_OM_OM76066U_(U)
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and
50% deionized water. (Minimum temperature: -31 F [-35 C])
45% deionized water. (Minimum temperature: -44 F [-42 C])
4-3. Do-it-yourself maintenance
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