X5M Coolant flow diagram?

[PrototypeX5M]

Would like to know the flow path that the engine/intercooler coolant circuits take if anyone has a diagram of this? cannot find anything anywhere. TIA

[Sophisticated Redneck]

Originally Posted by PrototypeX5M

Would like to know the flow path that the engine/intercooler coolant circuits take if anyone has a diagram of this? cannot find anything anywhere. TIA

The cooling circuits for the n63/s63 engines is a complicated thing. There are two separate circuits involving 5 water pumps and 7 heat exchangers along with enough tubing/hoses to circle the Earth TWICE (ok I lied about that last one, its only enough to circle the Earth once)

Best go to realoem.com and look up your vin, then go to engine and cooling sections and you can see a complete breakdown of every radiator, coolant line and water pump.

EDIT: Did some poking around, do a Google search for n63engine.pdf. Download it and scroll down to cooling diagram. S63 engine is identical except for additional heat exchanger and water pump for intercooler circuit.

[PrototypeX5M]

Originally Posted by Sophisticated Redneck

The cooling circuits for the n63/s63 engines is a complicated thing. There are two separate circuits involving 5 water pumps and 7 heat exchangers along with enough tubing/hoses to circle the Earth TWICE (ok I lied about that last one, its only enough to circle the Earth once)

Best go to realoem.com and look up your vin, then go to engine and cooling sections and you can see a complete breakdown of every radiator, coolant line and water pump.

EDIT: Did some poking around, do a Google search for n63engine.pdf. Download it and scroll down to cooling diagram. S63 engine is identical except for additional heat exchanger and water pump for intercooler circuit.

Yea I know the amount of hose and realoem, I'm just looking for a flow diagram, and I'd like to know which way it's flowing thru the intercooler circuit. Also, are the pumps pwm controlled? Thanks for the lead tho!

[Sophisticated Redneck]

Originally Posted by PrototypeX5M

Yea I know the amount of hose and realoem, I'm just looking for a flow diagram, and I'd like to know which way it's flowing thru the intercooler circuit. Also, are the pumps pwm controlled? Thanks for the lead tho!

I Believe the intercooler pumps and auxiliary radiator pump are pwm, the turbocharger pump is not from what I know.

Attached is the pdf on the n63, nearly everything applies to the S63, it just has an additional pump and heat exchanger for the intercoolers.