SL 550 2007, Previous: E55 AMG 2000, 450 SE 1979, 500 SL 1992, SL500 1998
the coolant level low light on my 1992 500 SL sometimes comes on when accelerating hard for a prolonged time when already running at high speeds. The coolant level is fine/unchanged. Still it lights up. Anyone recognise this or have a clue as to what is the problem?