Removing and installing brake pressure sender G518 and brake pressure sender G519 — AUDI

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

• Opens: brake fluid

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• The brake line (2) only has to be disconnected in order to remove the brake pipe connector.
• After installing brake pipe connector, reconnect brake line (2). Tightening torque 12 Nm

🔩 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. Raise the vehicle. [Note: The brake pressure sender (sensor) is attached to the brake pipe connector. The brake pipe connectors are located in the engine compartment (left and right).The brake pressure senders (sensors) can be renewed individually.The older version of the brake pressure senders (sensors) 1J0... the parts catalogue cannot be bled.In order to bleed the brake system completely, replace the old version with the new version.The new version of the brake pressure sender (sensor) can be identified by the Part No. 4F0... the parts catalogue.]
2. Remove wheels.
3. Unscrew speed nut (1) and fold back cover to one side.
4. Unclip wiring harness.
5. Open plastic housing cover.

6. Unplug electrical connector (1) on brake pressure sender.
7. Detach brake pressure sender from pipe connector and unscrew. [Note: The brake line (2) only has to be disconnected in order to remove the brake pipe connector.]
8. Installation is carried out in the reverse sequence.
9. Tightening torque: 28 Nm — 28 Nm (21 lb-ft)
10. After installing brake pipe connector, reconnect brake line (2). Tightening torque 12 Nm — 12 Nm (8.9 lb-ft)
11. Bleed brake system .

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