1. Disconnect the ground cable from battery.
2. Remove the ornament panel. 
3. Remove the control wires from both sides of the heater and cooling unit.
4. Remove the screws and claws, and remove the control module from the ornament panel.
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Control Unit (Manual A/C Model)
1. Disconnect the ground cable from battery.
2. Remove the ornament panel.
3. Remove the control wires from both sides of the heater and cooling unit.
4. Remove the screws and claws, and remove the control module from the ornament panel.