Usually it is enough to do the bleeding with the steering wheel. But the official way is according to Bentley Repair Manual different for the rear. Lift the rear of the car.... open the bleed valve at the regulating valve etc pp....
But that in my opinion only if you did some major repairs on the rear shocks so that air had a chance to enter. The fluid from the reservoir tank anyway has the circulating route pump>rear>regulating valve at rear axle>return line to reservoir>and it enters from left side wheel housing into engine room into the reservoir. So the air will come anyway to the reservoir. No need to bleed at the rear.
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