[s-cars] Intermittent bulb out indicator

[Ivan Demkovitch]

I asked question a while ago what this icon on display means. Well, it's still there.
 
It will come on and go out. I may not see it whole day and next morning when I start driving it will illuminate and start beeping.
 
As you may guess all lights working.
 
I did clean all connections in a trunk/trunk lid. Replaced 3 bulbs that were looking suspicious.
Checked wires in a trunk to make sure they are not broken.
 
Checked/cleaned front turn signals bulbs.
 
H1's for low beam looks little bit worn out (spirals), wonder if that could be culprit.
 
Did anybody experience similar problem? 
 
Thanks,
Ivan
 
93' S4
 
P.S. Before I kill autocheck