myavo--- i have not seen that thread, the one i was referencing was much older(a few years i believe) but it may help the op.
tnsee---first off i just reread my first post and want to apologize for the wording i used, "unfortunately, for you", i did not mean for this to come off as insensitive or harsh in any way. i was just trying to convey that the thread was difficult, for me, to locate the first time around and i did not believe that i would be able to find it easily again.
i just spoke with my father and he confirmed what i believed to be his problem, the fan control module(fcm). you may want to disregard the reference to it being red as i am not sure. he said they replace to fans because of an updated/upgraded design. he was under warranty so that may have just been the dealer acting for their own benefit. anyway, from what i recall, a member here had the same problem and only replaced the fcm. keep in mind that tdiclub is a far more legitimate source of info. than either my father or a dealership imho. the part numbers which were replaced-- vwn: 1ko959455dl and 1ko959455et. i am not sure if the third character is a zero or letter O, so you will have to figure that out independently. if you could check a bentley or have that done for you to verify that the part numbers are the same that would be the way to go.
please note again i do not own a tdi nor a vw, i am not a mechanic, i did not stay at a holiday inn express last night; all that being said i am trying to be helpful. please verify with someone more in the know than myself before acting on any advice i offer as it may or may not be helpful or in your cars best interest. it sounded like an easy fix from the thread i read. i will try to find it but it could be a few days. best of luck.
ciao,
waltz