Pressure Reservoir, Draining

Procedure

-- Remove the left underbody trim panel. Refer to OVERVIEW - UNDERBODY TRIM PANELS .

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Chassis
• Suspension control
• 0001 - OBD-capable systems
• 0074 - Drivetrain Control Module J775
• 0074 - Drivetrain Control Module functions
• 0074 - Basic Setting

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

-- Slowly loosen the air line -2- on the pressure reservoir -1- and allow air pressure to escape. After the air pressure has escaped, remove the air line.

Fig 1: Pressure Reservoir - Tightening Specification

Courtesy of AUDI

-- Remove and dispose of the pressure reservoir. Refer to PRESSURE RESERVOIR, REMOVING AND INSTALLING .

• If the air line is removed from a component, check if the cutting ring is seated on the air line.

Tightening Specifications

• Refer to OVERVIEW - UNDERBODY TRIM PANELS .