[s-cars] Lamp control module

[KBATTPO]

Folks,
this is driving me nuts. As of a week or two ago my Autocheck has
starterd displaying the burned lamp symbol. All while driving,
intermittently on and off. Funny I should ask for help on this. I have
hacked the Autocheck a long time ago (for the relayed Euros) and it has
been performing flawlessly for 3 years.
Conditions:
1. All bulbs are OK. And I mean really OK. Impedances tested with a
multimetre and they all light up.
2. The bulb symbol comes ON with IGNITION ON, but while the light stalk
is in the OFF position. This is puzzling. Even if a bulb were out, the
Autocheck should not have noticed it untill the lights were turned ON.
I have tested this im my garage last night by removing one taillight
bulb and while the Autocheck was OK. If I did this with IGN ON but
LIGHTS OFF the Autocheck was happy. As soon as I turned the LIGHTS ON,
the Autocheck had senced the removed bulb. Just the way it was supposed
to work in the first place.

Yet when it is intermittent, it buzzes w/o the lights turned ON, i.e.
when it is not even supposed to otice a burnt bulb if there even were
one burned.

Did anyone have anything like this?

Igor

P.S. I am going to swap my Lamp Control with Sterfan's. If the problem
stays with my car - it's the wiring, if it moves over to Stefan's car -
its the module itself. Yeah, my favourite "how to catch a lion in a
desert" approach.