*thx777: Congrats on the new car! BTW is that the new Everest? Im sure it is safe to use Step 3 on that part, but i would recommend you use the step 2 less, see if that is the plastic type thats not smooth, its either that its a painted plastic, or its a colored plastic/fiberglass it depends on the manufacturer, im not that well knowledgeable about these, but i forgot in what training i was told about this, i forgot if Megs or Moms, but one of those recommended to me that as much as possible lessen the use of polishes on these plastic parts of the car, the reason being is, if its painted plastic, chances are the paint in this section is a lot thinner compared to that of the paint panel, based on the picture my bets would be that its a painted plastic, so yes its safe to use Step 2 but be lighter on pressure or if its still in good condition you can skip this part and buff it only if its necessary. As for those special cases where its made of fiberglass or plastic with a nice clear type resin, sometimes using step2 might actually haze the appearance and glass like properties of the fiberglass, but these are usually only used on show cars and those with really nice body kits.
Also if your car is just about 1 month old and is still in great shape then you might want to just do step 3 only, step 2 contains mild polishes that might reduce a very very VERY small amount of clear coat, and in the process this might nullify your paint protection since the sealant would be removed by the polishes. I would recommend you do just step 3 for now, and in a few more months lets say about 3 to 6 months after the paint protection, at this point the paint protection should start to wear off, then this would be a nice time to apply step 2. or if you want to remove certain swirls or further improve the gloss of the paint you could apply step 2 but chances are you would be removing the sealant in the process, then again if you're applying step 3, your paint should have enough protection, its just that the sealant would go to waste if its gonna be removed, so i would recommend applying step 2 after 2 more months.