I guess the dealer or previous owner forgot to mention how the DPF works in the Antara, sadly my dealer also seemed to forget...Ok here it is in short, regular as clockwork every 500 miles the car will need a regen, the car needs to be driven at over 2000 rpm for about 20 mins uninterrupted if possible until the jobs done. Now if you have repeated reg failures, noticeable by fans running when switched off, you will eventually get the DPF light either flashing or constant on the display and sometimes a chiming sound. This is telling you your on your final warning and need to regen immediately, failure to do so will end up going into limp mode and VX having to regen for you which wont be cheap... You will also after each failed regn dump unused fuel into the oil which will mean oil becomes contaminated and the oil change light comes on.
Now all this sounds doom and gloom, but it is not, just a case of learning to live with it. I set my odometer to 0 once a regen has finished and I can plan when I get near to 500 miles to either make sure I go on a short run or similar to let it do its own thing. Sadly no lights come on to tell you its in a regen, the only thing you notice is a smell sometimes and the fuel consumption on the BC (computer) drops through the floor until regen done. So it helps to get the BC activated so it shows fuel consumption etc rather than just tyre pressures. It isn't or rather should not be expensive to have activated and worth every penny as I find dealing with DPF regens a doddle with the visual information from the BC
2015 Antara 2.2 Exclusiv 2WD Manual 163 ps Carbon Black