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 MANUALSAUDI2025Q3 PREMIUMREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTILOCK BRAKE SYSTEM45 ANTILOCK BRAKE SYSTEMCONTROL MODULE AND HYDRAULIC UNITABS CONTROL MODULE -J104- / ABS HYDRAULIC UNIT -N55-, REMOVING AND INSTALLINGABS CONTROL MODULE -J104- / ABS HYDRAULIC UNIT -N55-, REMOVING AND INSTALLING, LHD VEHICLESNOTES
2025 Audi Q3 Premium
ABS Control Module -J104- / ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING, LHD VEHICLES: Notes
2025 Audi Q3 PremiumSECTION Notes
- If the ABS Control Module -J104- is faulty, it can be replaced separately.
- If the ABS Hydraulic Unit -N55- is faulty, it must be replaced together with the ABS Control Module -J104-.
Special tools and workshop equipment required
- Vehicle Diagnostic Tester
- Open Ring Spanner Insert - AF 11mm :V.A.G 1410/6
- Torque Wrench - Universal Joint :V.A.G 1410/7
- Brake Pedal Actuator :V.A.G 1869/2 .
- Bleeder bottle from the Bleeding Equipment :VAS 6860 or Brake Charger/Bleeder Unit :VAS 5234 with bleeder hose -1-.
- Plug from the Repair Kit :1H0 698 311 A M10 -2- and M12 -3-
- Plugs from the Assembly Part Set :5Q0 698 311 : M10 -1- and M12 -2-
- Safety Gloves
RENDER: 1.0x
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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.