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.
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HOMESERVICE MANUALSAUDI2012S4 QUATTRO SEDAN (8K2) V6-3.0L SC (CCBA)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSSERVICE AND REPAIRABS HYDRAULIC UNIT WITH ABS CONTROL MODULE J104 ASSEMBLY OVERVIEW
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)
ABS Hydraulic Unit With ABS Control Module J104 Assembly Overview
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)SECTION ABS Hydraulic Unit With ABS Control Module J104 Assembly Overview
ABS Hydraulic Unit with ABS Control Module J104 Assembly Overview
1 - ABS Hydraulic Unit (N55) with ABS Control Module (J104)
• Component location: in the left of the engine compartment.
• Removing and Installing => [ ABS Hydraulic Unit with ABS Control Module ] Service and Repair.
• The hydraulic control unit is comprised of the ABS hydraulic unit N55 with integrated brake pressure sensor G201 and the ABS control module J104.
• The components must not be separated from each other.
• Do not disconnect the connector before successfully completing OBD.
• Switch the ignition off before disconnecting the connector.
• The brake pressure sensor G201 is integrated into the ABS hydraulic unit N55 and cannot be replaced.
The ABS hydraulic unit N55 and ABS control module J104 must not be separated from each other.
2 - Esp Bracket
• The bracket cannot be removed.
3 - Abs Control Module J104 Electrical Connector
4 - Brake Line
• 14 Nm
• to the brake master cylinder.
5 - Brake Line
• 14 Nm
• to the brake master cylinder.
6 - Brake Lines
• 14 Nm
• Hydraulic unit to right front brake caliper
• 14 Nm
• Hydraulic unit to front left brake caliper
• 14 Nm
• Hydraulic control unit to rear left brake caliper
• 14 Nm
• Hydraulic control unit to rear right brake caliper
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.