I have been a member of this group for yonks and posted the following
under: 406SV Expensive 120k service. But not a single response - a
first. So I try again - we help each other by reporting our experiences
and this, usually, generates feedback.

My sv had its 120k up which meant a new cambelt - $A1,600. But we had
experienced an overheating problem - this happened before - about 2
years ago and was fixed by replacing a sensor - $A55.

But this time they kept my car for over three days and the final cost
was over $A3k. They replaced BOTH fan motors and the water pump - 3/4
of the heating system. At least they did not replace the radiator!

Have owners of other geriatric 406's had this sort of experience?

I now add that the two motors seem to work fine. But, to be fair, also
add that there has been no sign of overheating since the fix.