Mr Zipps: Acura might cover something like the Navi Screen. However, for the trim, I think you are SOL with them.
My advice, Mother's polish is terrible. I tried it tonite on some lightly swirled plastic tails from my Integra. Like real light, barely noticeable unless under a Halogen light. So, I QD'd the tails and worked in some Mother's Plastic polish and it did nothing. I tried a different pad and used more force, nothing. I then used Gliptones Swirl Free Polish (fine cut) with a terry towel folded in 8ths and it took most of the light swirls out of the plastic.
If I'm not mistaken, the trim is shiny right? I would try some light cut polish first, then if nothing, try some DACP. Apply these both with a terry towel folded in 8ths (to disperse equal pressure). If you don't feel comfortable, I'd just order a new piece from Acura or try eBay.
Good Luck.