Question:
I'm trying to understand just what happens when you "learn" the opener
remotes. I also have a three button built in remote in my vehicle. I'm
trying to figure out (without experimenting) if the remote "learns" from the
head unit, or does the head unit "learn" the remote. What I'm trying to
accomplish (if possible) is to "learn" the same button to two or more garage
doors. Any advice ?
Answer:
With any GDO system I've seen, the remotes transmit only and the
receiver at the house receives only. Initially, the receiver doesn't
know which transmitters it should obey and which ones on the same
frequency it should ignore. So there's some method of making the
receiver "learn" the codes transmitted by exactly the set of remotes you
want to work.
Your vehicle might be a special case, in that it may support a bunch of
different garage door manufacturers, with the ability to "learn" the
code structure from one of the dedicated remotes for that door.
Learning remotes can both receive and transmit.
What you want to do might be made to work if both of the garage doors
can actually be operated from the same dedicated remote. That would
work if they're both from the same manufacturer and if the remote
transmits the same code every time. Both door receivers need to be
trained for the same transmitter. On the other hand, if the transmitter
changes the code it transmits every button push, this isn't going to
work.
