Bleeding brake system with brake filling and bleeding equipment — AUDI

🧭 Before you start

Fits: Audi R8 (4S, 2015–)

• Opens: brake fluid

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• Use suitable bleeder hose. It must sit tightly on the bleeder screw so that no air can enter the brake system.
• Fill brake fluid reservoir up to "“MAX”" mark (depending on degree of pad wear) and screw on filler cap.
• Changing brake fluid 421

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Connect brake filling and bleeding equipmentVAS 5234 with adapterVAS 5234/1A.
2. Detach protective cap (3) from bleeder screw (1) on brake caliper.
3. Connect hose (2) from bleeder bottle, as shown in illustration. [Note: Use suitable bleeder hose. It must sit tightly on the bleeder screw so that no air can enter the brake system.]
4. With bleeder hose attached, leave bleeder screw open until the brake fluid which emerges is clear and free from bubbles.
5. Press brake pedal 5 times to assist bleeding process.

6. Tighten bleeder screw, detach bleeder hose and fit protective cap on bleeder screw.
7. Repeat bleeding procedure in stated sequence at other brake calipers.
8. Fill brake fluid reservoir up to "“MAX”" mark (depending on degree of pad wear) and screw on filler cap.
9. Start engine and check brake pedal travel and brake pedal pressure.
10. In the event of excessive pedal travel, check brake system for leaks and/or repeat bleeding procedure.
11. Zero compensation for brake pressure sender 1G201 must be performed after bleeding brake system . [Note: Changing brake fluid 421]

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