Sienna FWD V6-3.3L (3MZ-FE) (2006)
2. REMOVE CENTER CLUSTER MODULE KNOB NO.2 (for Manual Air Conditioning System)
a. Release the 2 claws fittings and remove the center cluster module knob No. 2.
NOTE: Take care not to break the claws on the knob.
3. REMOVE AIR CONDITIONER AMPLIFIER ASSEMBLY (for Manual Air Conditioning System)
a. Remove the plate.
b. Release the lock of the connector and disconnect the cable.
c. Remove the 4 screws, and the heater control housing.