Removing vacuum line

Pull adapter -2b- - or hose piece if an adapter -2b- is not used - together with the thin vacuum line out of the branch piece of the vacuum line -1- .
Disconnect vacuum line -1- from the vacuum line on the vehicle side in area -2- at the plug-in coupling. To do this, remove the retainer -2a- and pull the vacuum line out of the plug-in coupling while releasing it at the same time.

Fig 1: Identifying Vacuum Line Connections
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Release vacuum line -1- from combination holder -3- (open combination holder -3- ).
Unclip lines from the retaining clip -4- .
Remove vacuum line -1- at the tandem pump -7- . To do this, loosen the two Torx screws -5 and 6- (Torx E10) -from the underside when the vehicle is raised- . Counter at the hexagon on the combination screw behind it (behind the holder) when loosening the Torx screw -5- . You only need to counter if a combination screw is fitted under the holder (introduced only in the current model series).
Press vacuum line -1- out of the tandem pump -7- .

Fig 2: Identifying Vacuum Line At Tandem Pump
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Fig 3: Identifying Tandem Pump
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Lower the lifting platform and remove vacuum line (take it out of the engine compartment). Important: Before removing the vacuum line, take note of the installation position between the various hoses and lines for subsequent installation!