CVar characterAmbient

Sets the ambient value for character models in the Phong lighting model.
/console characterAmbient [value]
;value :Floating-point value between 0.0 and 1.0
:Allows no value to be set and disables all Ambient Lighting on M2 Models.
;Notes :Even with characterAmbient set to 0.0 it is considered to be on, and needs to be entered as /console characterAmbient to disable Ambient lighting
Default:
 SET characterAmbient "0.0"
Category:Removed console variables
Category:Removed in patch 4.0.1