On checking the pedal it does go fairly low to the floor. Upon stepping down once or twice it seems to rise up. Does that indicate air in the lines? If so , do I bleed all 4 or just the rear? I once went to the dealer a few years back to test the pedal and they said all MLs had this kind low pedal. I did not remove any hoses and the old pads rested perfectly near the rotors as normal. Thank you Tabo and Gilly for your quick responses.
Danny