Overview - Control Module And Hydraulic Unit

WARNING: This page is about a different car, the 2022 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

vehicle with vacuum brake booster is shown.

Fig 1: Exploded View Of Control Module And Hydraulic Unit

Courtesy of AUDI OF AMERICA, LLC

ABS Control Module -J104-
- The ABS Control Module -J104- can be replaced separately if faulty.
- A faulty ABS Hydraulic Unit -N55- must be replaced together with the ABS Control Module -J104-
- Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING
- Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT
- Refer to CONTROL MODULE, INSTALLING ON HYDRAULIC UNIT
ABS Hydraulic Unit -N55-
- The ABS Control Module -J104- can be replaced separately if faulty.
- A faulty ABS Hydraulic Unit -N55- must be replaced together with the ABS Control Module -J104-
- Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING
Bolt
- Tightening Specifications
  - 1. Step 1: 1 to 1.5 Nm (to position the seal)
  - 2. Step 2: 2.5 Nm
- Replace after removing
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool. Refer to Fig 2 12 Nm
- Replace a damaged or bent brake line
- To the right rear brake caliper
- License plate: 5.25 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool. Refer to Fig 2 12 Nm
- Replace a damaged or bent brake line
- To the left front brake caliper
- License plate: 5.25 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool. Refer to Fig 2 12 Nm
- Replace a damaged or bent brake line
- To the right front brake caliper
- License plate: 5.25 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool Fig 2 12 Nm
- Replace a damaged or bent brake line
- To the left rear brake caliper
- License plate: 5.25 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool Fig 2 12 Nm
- Replace a damaged or bent brake line
- For brake master cylinder/primary piston circuit to hydraulic unit
- License plate: 6 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Line
- Tightening Specifications
  - With standard tool: 14 Nm
  - With special tool. Refer to Fig 2 12 Nm
- Replace a damaged or bent brake line
- From brake master cylinder/secondary piston circuit to hydraulic unit
- License plate: 6 mm diameter and union bolt with M12x1 thread
- Do not change the bending shape.
Brake Booster
- Refer to OVERVIEW - BRAKE BOOSTER/BRAKE MASTER CYLINDER
Mounting Bracket
Bolt
- 8 Nm
Rubber Bushing
Heat Shield
- There are different versions. Refer to the Parts Information for the allocation.
- Version with threaded connection. Refer to Fig 3.
Nut
- 20 Nm
Bracket
Nut
- 20 Nm

Brake Lines Tightening Using Special Tools

Fig 2: Special Tool Assembly For Tightening Brake Lines

Courtesy of AUDI OF AMERICA, LLC

Special tools and workshop equipment required

Open Ring Spanner Insert - AF 11mm: VAG1410/6
Torque Wrench - Universal Joint : VAG1410/7
Mini Torque Wrench: VAS6854

Heat Shield with Threaded Connection

Fig 3: Heat Shield - Threaded Version

Courtesy of AUDI OF AMERICA, LLC

Replace the self-locking nut after removing.

-- Tighten the nut -1- for the heat shield -2- to 8 Nm.

-- Press on the bracket for the lock washer -3- all the way.