Originally Posted by DanW@FastFord

They do make sure strange sounds - The heater makes a groaning noise occasionally, as does the EGR valve (it's supposedly self cleaning as it does a full 'sweep')

It shouldn't regen every couple of weeks unless there's a problem. Do you drive the car very gently? If so, that's the worst thing you can do with a DPF equipped car - you really need to kick the crap out of it from time to time.

Do you have the aircon on? That can make the fan come on.