Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Overview - Control Module And Hydraulic Unit
2019 Audi S5 Prestige, 2D CoupeSECTION Overview - Control Module And Hydraulic Unit
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2020 Audi S3, 2020 Audi RS 3, 2020 Audi A3 Quattro, 2020 Audi A3, and 2019 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.
Control Module and Hydraulic Unit
- Bracket
- Nut
- 20 Nm
- Rubber Insulation
- Bracket
- ABS Hydraulic Unit -N55-
- Removing and installing. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .
- ABS Control Module -J104-
- Do not disconnect connector before successfully completing On Board Diagnostic (OBD). Switch ignition off before separating connector
- Removing and installing. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .
- Control module, separating from hydraulic unit. Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT .
- Control module, attaching to hydraulic unit. Refer to CONTROL MODULE, ATTACHING TO HYDRAULIC UNIT .
- Brake Line
- 14 Nm
- From brake master cylinder to the hydraulic unit
- Identification: 5.25 mm diameter and union bolt with thread M12 x 1
- Brake Line
- 14 Nm
- From brake master cylinder to the hydraulic unit
- Identification: 6 mm diameter and union bolt with thread M12x1
- TORX®
Bolt
- Install the new TORX® bolts in two steps switching back and forth.
- Step 1: temporary tightening specification: 1 Nm to 1.5 Nm (to install the seal)
- Step 2: final tightening specification: 2.5 Nm
- Heat Shield
- There are different versions. Refer to the Parts Information for the allocation.
- Threaded version. Refer to Fig 2.
- TORX®
Bolt
- 8 Nm
Heat Shield - Threaded Version
- Replace the self-locking nut after removing.
-- Tighten the nut -1- to 8 Nm.
-- Press on the bracket with the lock washer -3- all the way.
ABS Control Module -J104-
Fig 3: Identifying Pressure Sensor Contact, Pressure Sensor, Seal, Valve Bodies And Pump Motor Contact
- Pressure Sensor Contact
- Do not touch the contacts
- The illustration depends on the model
- Pressure Sensor
- Must not be changed or damaged
- Cannot be replaced
- The illustration depends on the model
- Seal
- Must not be pulled out or raised up
- Cannot be replaced
- Valve Bodies
- Must not be damaged or bent
- Do not use any tools
- Pump Motor Contact
- Must not be damaged or bent
RENDER: 1.0x
NO RELATED
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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.