[header] How to disable a garage door sensor [title] Ensure that the door is closed, if possible. [step] Engaging manual mode on your garage door while it's open may cause it to come crashing closed if the door spring is damaged. Avoid this by setting it to manual mode while the door is closed. 
[substeps] If this is impossible because the door is stuck open, move on to the next step. [title] Prop the door up with 2x4s if it's stuck open.