The exterior lamp failure light does not work at all on my 94 E300 Diesel.
I have done a search and all complaints are the warning light comes on when there is no lamp out.
My one does not come ever, when there is a lamp out.or when the key is turned to position 2 prior to start up.
Could this mean the "lamp out" indicator bulb is blown. TIA.

Regards, Etaxi.