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Home >> Audi >> 2017 >> A3 Premium, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Hydraulic Components (Brakes) -- (Sedan)) >> 47 Hydraulic Components >> Brake Booster/Brake Master Cylinder >> Brake System Pressure Reservoir -VX70-, Removing And Installing >> Removing

Brake System Pressure Reservoir -VX70-, Removing And Installing: Removing

WARNING: This page is about a different variant/trim than selected.
CAUTION:

High Voltage Is Extremely Dangerous.

Electrocution can cause death or very serious personal injury.

  • Have a "high-voltage technician" de-energize the high-voltage system.
  • Work on a de-energized high-voltage system may only be performed by a "technician trained in electrical systems ".

-- De-energize the high-voltage system. Refer to the appropriate service information .

-- Remove the Electric Drive Power and Control Electronics -JX1-. Refer to the appropriate service information .

-- Insert the Brake Pedal Actuator:VAG1869/2  between the brake pedal and driver seat. Pretension the brake pedal at least 60 mm.

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat
GWWA44-0020Courtesy of AUDI OF AMERICA, LLC
NOTE:

By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.

WARNING:

Risk Of Skin Irritation.

  • To prevent skin contact with brake fluid, wear chemical resistant safety gloves.

-- Remove the protective cap -3- from the bleed screw -1- on the left front caliper.

Fig 2: Identifying Protective Cap, Bleed Screw And Container Bleeder Hose
GWWA46-10203Courtesy of AUDI OF AMERICA, LLC

-- Connect the bleeder bottle hose -2- as shown.

-- Open the bleed screw to reduce the pressure in the brake system.

-- Close the bleed screw and remove the bleeder bottle.

-- Repeat the procedure on the left rear brake caliper.

NOTE:

Do not remove the :VAG1869/2  .

-- To protect against escaping brake fluid, place a cloth under the separating point.

-- Remove the union bolts -arrows- and then remove the brake line -1-.

GWWA47-10247Courtesy of AUDI OF AMERICA, LLC

-- Immediately seal the open connection points with clean plugs from the Assembly Part Set:5Q0 698 311  .

-- Disconnect the connector -2-.

GWWA47-10248Courtesy of AUDI OF AMERICA, LLC

-- Pull the Brake System Pressure Reservoir -VX70- -1- upward from the retaining pins and remove it.

-- Should the Brake System Pressure Reservoir -VX70- be replaced, remove the bolts -arrows- and the bracket -1-.

GWWA47-10249Courtesy of AUDI OF AMERICA, LLC