Dpf Sound

PeteA7S/Back

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Hi guys and girls, quick question regarding my dpf. A couple of days in a row now ive noticed my fan on as I walk away from the car after I have switched it off. Ive not noticed a symbol on the dash or anything regarding dpf regen or warnings etc and the car is not hot or overheating. Checked coolant and oil etc and having not had a dpf before im unsure as to what it is and just got told it will be the dpf regen mode. Is that right???
 
Sounds normal to me. Periodically my A7 (latest model) does the same as did my previous A7's. Car sounds like it is going to do a vertical take off, but when I first checked with Audi garage they said this was correct behaviour - suspect regularity depends on mix of driving you do.
 
yep, normal. Happens more if you do a lot of short journeys.
 
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Yep. Fan comes on due to short journeys. Same thing happened to me last week. Took it for a run on the motorway and it’s all good. Will be taking the DPF out and popping a delete pipe on there this week! EGR will be blanked off and mapped out by Rick @ Unicorn Motor Developments