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Home >> Volkswagen >> 2023 >> ID.4 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 (Brake System - Hydraulic Components) >> 47 Hydraulic Components >> Brake Booster/Brake Master Cylinder >> Overview - Brake Booster/Brake Master Cylinder >> Overview - Brake Booster/Brake Master Cylinder, LHD

Overview - Brake Booster/Brake Master Cylinder, LHD

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Brake Booster/Brake Master Cylinder
GWWN47-10455Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. Brake Fluid Level Warning Switch -F34-
  2. Cap
  3. Brake Fluid Reservoir
  4. Locking Pin
  5. Return Hose
    • For vehicles with manual transmission
  6. Seal
    • For the brake booster
    • Check for damages
  7. Mounting Bracket with Brake Pedal
  8. Nut
    • Always replace if removed
    • 25 Nm
  9. Brake Booster
    • Removing and Installing. Refer to BRAKE BOOSTER, REMOVING AND INSTALLING .

      The following components are integrated in the brake booster.

      • Brake Pedal Position Sensor -G100-
      • Brake Pedal Position Sensor 2 -G836-
      • Power Supply Sensor 1 -G730-
      • Power Supply Sensor 2 -G731-
      • Brake Booster Voltage Sensor -G822-
      • Brake Booster Temperature Sensor 1 -G838-
      • Brake Booster Temperature Sensor 2 -G839-
      • Brake Booster Motor Position Sensor -G840-
      • Brake Booster Control Module -J539-
      • Electro-Mechanical Brake Booster Motor -V548-
  10. Seal
    • Replace
  11. Brake Line
    • Brake master cylinder/primary piston circuit to hydraulic unit
    • with an M12 x 1 thread.
    • 14 Nm
  12. Brake Master Cylinder
  13. Nut
    • Replace after removing
    • 22 Nm
  14. Plugs
    • To install, coat with brake fluid
  15. Brake Line
    • Brake master cylinder/secondary piston circuit to hydraulic unit
    • with an M12 x 1 thread.
    • 14 Nm