Quote:
Originally Posted by litz4244
There is so much wrong info in this thread. There are two separate cooling systems. One is for the engine which includes the turbo coolant line and everything else engine related. That system is the high temp system which has a level indicator. So If the lines are leaking that's why your getting the low coolant message. The low temp system is for the intercoolers and intercoolers only. The level is not monitored. They are separate circuits.
|
This is the only right answer. This car has 4 coolant pumps. 3 are electric and one is conventional. The conventional one is only for engine cooling. 1 electric is for the turbos and cooling them after the engine has shut off. The other two are on an entirely different circuit and used for the charge air intercoolers. The s63 engine document explains this in great detail starting on page 48 which I uploaded.