Tool icons?
Do you mean the Gizmo - the thing you grab to move/rotate/scale an object? Or do you mean the Toolbar Buttons for those functions?
If the problem is the former, press "X".
Max 2016 (SP1/EXT1)
Win7Pro x64 (SP1). i5-3570K @ 4.4GHz, 8Gb Ram, DX11.
nVidia GTX760 (2GB) (Driver 430.86).