Removing and installing brake system pressure accumulatorVX70, RHD vehicles — VW

🧭 Before you start

Fits: VW Golf VII (5G, 2012–2020)

• Opens: brake fluid

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• Ensure rubber dampers are seated correctly in bracket of brake system pressure accumulatorVX70.
• Ensure that retaining pins have been fully and evenly inserted into rubber dampers.
• Ensure secure seating by pulling.

📋 Procedure

1. Observe safety precautions when working in the area of high-voltage components .
2. Observe the risk classification of the high-voltage system Electric drive00Risk classification of the high-voltage system.
3. De-energise high-voltage system now Electric drive93De-energising high-voltage system.
4. Disconnect battery Electrical system27Battery; Disconnecting and reconnecting battery.
5. Disconnect connector (3).

6. Release hose clip (1) and remove coolant hose.
7. Remove coolant expansion tank from bracket. To do this, release catch (2) with a thin screwdriver.
8. Unscrew nut (2) and remove bracket (1).
9. Move coolant hoses and electrical wiring away from the area of the brake system pressure accumulatorVX70.
10. Draw off as much brake fluid as possible from brake fluid reservoir using brake filling and bleeding equipmentVAS 5234.
11. Place sufficient lint-free cloths in the area of the brake system pressure accumulatorVX70(1).
12. Unscrew brake lines (2) from brake system pressure accumulatorVX70(1).
13. To do this, unscrew union nuts (3).
14. Seal threaded hole immediately using sealing plugs1H0 698 311 A or sealing plugs5Q0 698 311.
15. Fit dust caps from the brake caliper bleeder valves onto brake lines.
16. Release and pull off connector (4).
17. Pull brake system pressure accumulatorVX70(1) together with bracket (3) and rubber dampers (2) upwards off bracket.
18. Ensure rubber dampers are seated correctly in bracket of brake system pressure accumulatorVX70.
19. Ensure that retaining pins have been fully and evenly inserted into rubber dampers.
20. Ensure secure seating by pulling.
21. Bleed brake system .
22. Subsequently bleeding the brake system .
23. Perform basic setting for electromechanical brake servo .

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