Feature that I'd love to add to our cars, I'm sure it's been done. When you unlock the door with the physical key and hold it, all the windows will roll down simultaneously. This is a feature that is on most Audi's and Volkswagen's.

Any ideas on how we could add this feature to our cars? Or if it's already been done. Tried searching but it's such a specific thing that I didn't have good results.

 

There probably is a way not sure how though. I installed an alarm system on a 95 accord awhile back that had the ability to auto roll the drivers window up when you locked the door incase you forgot. I didn't bother with the feature though.