Quote:
Originally Posted by workingonit
... On the other side of the engine bay, there's a large open space, with no systems crammed in (unusual in modern vehicles). There's an unused bracket on the right fenderwell brace, labelled "diagnosis plug bracket" in RealOem. What diagnosis plug? ...
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On my 3.0d (M57TU) this bracket holds the vacuum reservoir - used by the turbo boost control system.

(image by
omodos)