32 41... Notes on hydraulic line with quick-release coupling

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Quick-Release Coupling With ID Marking:

Fig 1: Identifying Quick-Release Coupling With ID Marking
Courtesy of BMW OF NORTH AMERICA, INC.

Removing:

Push quick-release coupling (1) against pipe (4) (thereby relieving strain on spring (2)).

Press plastic ring (3) into quick-release coupling (1) and remove coupling (1).

Installing:

Markings (K) on coupling (1) and pipe (4) must be flush.

Push quick-release coupling (1) onto pipe (4) until a "click" can clearly be heard.

To check that quick-release coupling (1) has been installed correctly, pull it back forcefully.
Quick-Release Coupling With Indication Pins:

Fig 2: Identifying Quick-Release Coupling With Indication Pins
Courtesy of BMW OF NORTH AMERICA, INC.

Removing:

Press plastic ring (2) into quick-release coupling (1) and remove coupling (1).

Installing:

Push quick-release coupling (1) onto connector (3) until both indication pins (4) can be seen and felt to point outwards at outside diameter of housing.

To check that quick-release coupling (1) has been correctly fitted, feel indication pins (4) at outside diameter of housing. When correctly seated, indication pins (4) cannot be pressed into housing.

IMPORTANT: Coupling is not correctly engaged if both indication pins (4) fail to protrude from housing. Leakage is thus unavoidable.