Toyota Repair Problems? Ask a Mechanic for Answers ASAP
I am going to assume that you have been following the homelink instructions from the owner's manual in the Sienna. I susspect the issue lies within the specifics of the Genie opener and not the universal homelink. I found another set of instructions on Genie's website that I would suggest trying.
Thanks, ***** ***** luck
How did the new instructions work out for you?