the light come on , on ocassion
what does bas,esp and ets stand for on dash board light system on 2001 Mercedes-Benz ML320
Those are Anti Lock Brake/ Electronic Stability Control issues. Your system needs to be scanned with a professional scan tool to test the Anti Lock Brake Control, to find your fault.
POSS CONTROL MODULE SINCE ITS INTERMITANT.BUT AS ADV SEEK PROPER DIAG