Lexus GS 450h2011 Manual page 468

4-3. Do-it-yourself maintenance
Radiator and condenser
Check the radiator and condenser and clear any foreign objects. 
If either of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus dealer.
CAUTION
When the hybrid system is hot
■
Do not touch the radiator or condenser, as they may be hot and you may be burned.
Brake fluid
■ Checking fluid level
Make sure to check the fluid type and prepare the necessary items.
■ Adding fluid
Fluid type
Items
468
GS_HV_U (OM30C14U)
September 18, 2015 8:32 am
The brake fluid level should be
between the "MAX" and "MIN"
lines on the tank.
FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Clean funnel