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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 278 (Fuel Supply System - Repair) >> Fuel DEAERATION >> 16 13 521 Removing and installing/replacing pressure switch for Natural Vacuum Leak Detection (NVLD)

16 13 521 Removing and installing/replacing pressure switch for Natural Vacuum Leak Detection (NVLD)

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Necessary preliminary tasks: 

IMPORTANT: When replacing the pressure switch, the DUST FILTER  must also always be replaced.

Release hose clamp (1) and pull off tank ventilation line.

Installation note: 

Replace hose clamp.

Disconnect plug connection (2).

Release screws (3) and remove pressure switch with dust filter.

Fig 1: Identifying Tank Ventilation Line Hose Clamp And Screw
G09946120Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Pull off pressure switch (2).

Installation note: 

Check gaskets and replace if necessary.

Fig 2: Pulling Natural Vacuum Leak Detection Pressure Switch
G09946121Courtesy of BMW OF NORTH AMERICA, INC.