Regeneration of the DPF is about every 500miles and will only be attempted once the engine is up to running temp depending what model you have on the top screen you may have a digital read out of average mpg actual mpg. The actual mpg if you are coasting with foot off the gas pedal you will get a display of 9999 but when it's going through a regeneration cycle you'll get a very low fig on the display. another indication is when you switch off engine you hear the fans running it's doing a regeneration but the pain is once switch off it will not go straight back into a regeneration cycle this could take up to a number of miles before going into another regeneration. The warning light is to let you know a regeneration is needed and needs a good run with revs above 2k for 15 to 20 mins you'll know when it's completed as the warning light goes out. The light is really for those who only go to local shops or school run and not giving it a good run to clear out the carbon build up
2012 Antara 2.2cdti 163ps Awd SE Nav Auto in Smokey eye Grey with light Titanium interior. With 19 full size matching spare.
Towing a Bailey Pegasus 554m.t.p.l.m. 1492kg