I don't think there is a diagram in the Bentley. You are correct with regard to the clear hard-line. It goes from the bottom of the intake the cabin temp sensor on the firewall.
A couple more vacuum lines originate from the bottom of the intake: one line goes to the fuel pressure regulator and another goes to a sensor (can't remember which one) on the thermostat housing. I can***8217;t remember if there is a third.
There should also be a line that originates just under the throttle body...I think that one goes to the thermo housing as well.
EDIT: I was doing some work on the 535is last night and while disconnecting the negative battery terminal I noticed a vacuum hose diagram on the wheel well just behind the battery. Check that out.
A couple more vacuum lines originate from the bottom of the intake: one line goes to the fuel pressure regulator and another goes to a sensor (can't remember which one) on the thermostat housing. I can***8217;t remember if there is a third.
There should also be a line that originates just under the throttle body...I think that one goes to the thermo housing as well.
EDIT: I was doing some work on the 535is last night and while disconnecting the negative battery terminal I noticed a vacuum hose diagram on the wheel well just behind the battery. Check that out.
