My wife's Crossfire has just started to exhibit similar tendencies.

It is an Australian (RHD) 2004 Crossfire:

The issue is the loss of turn signal (indicator) function on startup, BUT returns after a different length of drive time, often 30 minutes plus, the hazard switch functions and the lights flash as expected at all times.

The local autoelec we use has looked at the vehicle and 'thinks' it is a unit that is located behind the radio that has the issue, he claims to have tried to source a new/2nd hand one here in Western Australia (WA) and has drawn a blank, also on ebay he has found none in Australia.

Now for my part, and considering we have just had an extremely long very hot summer and the vehicle is often parked in full sun a few days of the week, I am considering that it could be a simple as a dry joint that needs a reflow or touch up.

Apparently all other functions on this MFS appear to still work ok, just the loss of turn signals

Any help or pointers appreciated