Something I forgot to mention. If you have been doing other tests and deleting codes, even if you use the login the ECU will "abort due to safety reasons" whatever the **** they are! Also when you go into service regen it may tell you to press and hold the brake and accelerator and then do nothing. Exit engine, turn off and restart then re-enter 01, enter the login (S12345 is now a common one) then go into basic settings, select the service regen and it should say press and hold the brake and CLUTCH, then release and press and hold then release the accelerator, what I call the pedal dance. The engine will lift to a fast idle. Then use click on measuring blocks in the basic settings screen and use the search for ash, select the options, then search soot and select the options, and then temperate where you will get EGT 1, 2, 3, 4 (many don't have an EGT 2) or you may get a full bank display in one value. At this point you can get out and watch, after approx ten mins the engine note changes, the fans will kick up and the EGT's start to climb where EGT 3 can peak at 750 centigrade, then you will start to see the soot figures drop. When the process starts, there can be a lot of acrid smoke so make sure you aren't going to offend anyone. When the soot gets down to approx 3% the engine note will change and the EGT's start to drop, let it cool down and you are done.