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 MANUALSAUDI2007RS4 QUATTRO SEDAN (8EC) V8-4.2L (BNS)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLHYDRAULIC SYSTEMBRAKE BLEEDINGSERVICE AND REPAIRBRAKE SYSTEM BLEEDING
2007 Audi RS4 Quattro Sedan (8EC) V8-4.2L (BNS)
Brake System Bleeding
2007 Audi RS4 Quattro Sedan (8EC) V8-4.2L (BNS)SECTION Brake System Bleeding
Brake System Bleeding
CAUTION!
• Do not under any circumstances allow brake fluid to come into contact with fluids that contain mineral oils (e.g. oil, gasoline, cleaning agents). Mineral oils damage the plugs and seals in the brake system.
• Brake fluid is poisonous and must on no account be siphoned by mouth through a hose. Because of its caustic properties it must also not come into contact with paint.
• Brake fluid is hygroscopic, i.e. it absorbs moisture from the surrounding air, and should always be stored in airtight containers.
• Always observe environmental regulations for disposal.
• Only use NEW brake fluid conforming to US standard FMVSS 116 DOT 4.
• Genuine Audi brake fluid conforms to this specification.
• Use plenty of water to flush away any brake fluid spillage.
• When the system is open do not work with compressed air and do not move the vehicle.
• During the final road test, make sure that at least one Antilock Brake System (ABS) controlled stop is performed (pulsations must be felt at the brake pedal).
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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.