Try checking it in Environmental Tool GUI in symmwin.I have seen it for VMAX.  Not sure, whether you will be having access for that, contact technical support (Hardware team) to disable them for you or the local field team.
Hi there ...  Does anybody know how to Turn Off Front Door Lightbar on VMA3 ?  I guess it can be done pulling Front Door Lightbar Cable....BUT ! Would this be supported ?     thanks!  ( any comments would help ! Please !)   aya 
VMAX3 Light bar