1999 SL500, 108k miles.

The automatic climate control has ceased blowing cold; it otherwise works fine. The change has been sudden; only yesterday I remarked how cold it was. Now there is no cold air at all, no matter how I set the system.

There are no permanent DTCs.
The only intermittent DTCs are:
227: outside temperature indicator sensor (it seems to be working fine)
416: coolant circulation pump (M13) (this sounds like a possible trouble-maker)
417: automatic A/C monovalve (Y19)
419: electromagnetic clutch (A9k1)

I will clear the intermittent DTCs but I don't expect it to make a difference.

Help would be much appreciated, I'm going to the South of France in three weeks and need cold air to blow.

__________________
JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190