Diesel Fumes In Car And Engine Fan Stays On After Ignition Switch Off.

[MiltyG565]

Would a DPF come undear warranty jeebo with it being the exhaust??

His symptoms do seem to point towards an engine attempting a regen (although the diesel smell in the cabin does seem odd and a bit of a concern).

I agree with you in that he should take it for a warranty repair but I'm convinced they will prescribe a blocked DPF.

I think it would come under warranty. Even if it's not under warranty, and has failed within 2 years of service, the general rule is to ask "Would you expect it to fail within that time frame?", if the answer is no, then it's a faulty product, and you must either be refunded or have the product replaced/fixed. That's just a standard contract entered into when you buy something or sell something (as a company).