Pressure Reservoir, Draining, AUDI Q7

Procedure 

-- 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:

• Suspension
• Suspension control
• 01 - OBD-capable systems
• 74 - Drivetrain Control Module J775
• 74 - Drivetrain Control Module Functions
• 74 - Basic setting

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

• Follow the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Vent the system. Refer to AIR SUSPENSION SYSTEM, FILLING AND BLEEDING .

-- Switch off the ignition.

-- Remove the air duct to the vent from the B-pillar. Refer to OVERVIEW - B-PILLAR TRIM PANEL .

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

-- 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.