Lexus CT200h Owner's Manual page 661

Transmission
Fluid capacity
Fluid type
*
: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
NOTICE

Transmission fluid type
Using transmission fluid other than "Toyota Genuine ATF WS" may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.
CT200h_OM_OM76067E_(EE)
*
3.4L (3.6 qt., 3.0 Imp.qt.)
Toyota Genuine ATF WS
6-1. Specifications
6
659