Fig 1: Exploded View Of Control Module And Hydraulic Unit

Courtesy of AUDI OF AMERICA, LLC

Nut
- 9 Nm
Bolt
- 20 Nm
Bolt
- 4.5 Nm
ABS Control Module -J104-
- Component Location:
  - Vehicles without high-voltage system. Refer to Vehicles Without High Voltage .
  - Vehicles with high-voltage system. Refer to Vehicles With High Voltage .
- Control module, separating from hydraulic unit. Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT .
- Control module, attaching to hydraulic unit. Refer to CONTROL MODULE, INSTALLING ON HYDRAULIC UNIT .
Brake Line
- Tightening specification. Refer to SEPARATING POINTS .
- Do not change the bending shape.
ABS Hydraulic Unit -N55-
- Component Location:
  - Vehicles without high-voltage system. Refer to Vehicles Without High Voltage .
  - Vehicles with high-voltage system. Refer to Vehicles With High Voltage .
- Removing and installing. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .
  CAUTION:
  The pump motor must not be separated from the hydraulic unit.
Brake Line
- Do not change the bending shape.
- Tightening specification. Refer to SEPARATING POINTS .
Bracket
Buffer
Bolt
- 9 Nm
Bracket

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Overview - Control Module And Hydraulic Unit: Notes