Impossible to answer without knowing the year and build level of the van.
However all your questions can be answered by reading the owners manual.


"Honda-Man" <william.x.haas@gmail.com> wrote in message
news:3Fc_k.17$c35.7@nwrddc02.gnilink.net...
> Hello,
>
> My understanding is that the Honda Odyssey Alarm can remote start and open
> windows. When I bought the car I only had the remote unlock or lock the
> doors and alarm. Is it easy for me to configure the alarm system and
> remote to remote start the car or open windows?
>
> Thanks.
>