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 MANUALSAUDI2004A6 QUATTRO, 2.7 D, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESBRAKE SYSTEM - ABSANTI-LOCK BRAKE SYSTEM (ABS) BOSCH 5.3 WITH ELECTRONIC STABILIZATION PROGRAM (ESP)HYDRAULIC PUMP FOR ELECTRONIC STABILIZATION PROGRAM (ESP), REMOVING AND INSTALLINGINSTALLING
2004 Audi A6 Quattro, 2.7 D, Standard
Hydraulic pump for Electronic stabilization program (ESP), removing and installing: Installing
2004 Audi A6 Quattro, 2.7 D, StandardSECTION Installing
Pay special attention to the following on installation:
- Only remove sealing plugs on new hydraulic control unit when the corresponding brake line is about to be installed. Otherwise, brake fluid will escape observe paint and corrosion protection measures.
- Bleeding brake system on vehicles with ESP, see BLEEDING BRAKE SYSTEM
See Caution under GENERAL INFORMATION ON THE ANTI-LOCK BRAKE SYSTEM before beginning repairs on the electrical system.
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.