Red button trailer brake controller may be a good thing in relation to your DPF concerns. DPF needs to get red hot to burn off particulates and in my experience towing combined with highway driving equals a healthy DPF.
I have first hand experience.
My mate and I had identical 3.0l TDI’s purchased same date.
His was used by wife around town only. Mine was predominately highway driving.
At 5 years old his had 100,000km, mine had nearly 200,000km.
His DPF was stuffed. We had same mechanic, I asked him to check mine at same time, he said mine looked like new.
Only difference was city driving Vs highway.
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Jeep TJ rebuilt 4.0L, Custom Steel Roof Racks, vintage ((Jeep specific)) 15” Centerline Hellcats,
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