Hello,
the same problem for me but description is a bit different. (03' Defender 90 TD 5)
A) noise appears when its cold outside (from -0 to... of cesium)
B) it is only when driving straight and disappears for part of second when moving wheel or turning
C) this is not only noise - it mechanically stopping car an then TRC start stopping other wheel/wheels. (if disconnected TLC, noise still appears and still stops)
D) last season this noise was a little and disapers with all other symptoms after few minutes of riding. And when its not so cold outside it does not stop car, at least I do not feel. Might it is only a conjunction but after first winter noise simptoms last year dealer changed transfer box (like crashed) they say now its ok. And new box was only in spring (when warm) No noise - I am happy till this season cold weather...
E) few days befor and espetialy today (its was about -17 to - 20 C) noise and driwing condition was horable... noise with stopping effect of front right wheel + TRC reacting on this...
F) loud noise when slow and more silent when moving faster. today it was for more than 5 km and did not disappear...
Still do not know what it is....
Please help.
DEFS
Vilnius, Lithuania