Managed to trace this problem to the cooling fan!!! Even through the
vehicle never showed any signs of over heating and the symbol looked
like low fluid, I found that the cooling fan was siezed. Ordered new
fan from Merc dealer and are now waiting to fit it. Sometime miss
direction can send you looking at the wrong things and over looking
the real fault. Oh well thats life
> I have a Merc CL500 with the Coolant level warning displayed
> on the dash, although the level is correct. A new sensor has
> been fitted, but the problem still remains. There seems to be
> no fault with the wiring around the sensor. There is 12v at
> the plug, but this drops to 1.7volts once it is plugged in.
> Has anyone had a problem like this?