Switch is located under trunk lid (black cover removed). Screwdriver in image below pointing to location



You can use a jumper wire as shown below to make the BCM think the spoiler closed/down switch is closed (spoiler is in lowered position). With this jumper in place turn on your car and use the D ring on the top to open it. If this switch is your issue the windows will automatically lower when you twist the d-ring and pop up the top. The BCM logic will not let the top lower if it is not seeing a switch closed signal from spoiler down limit switch and the trunk closed limit switch.