Remove hydraulic unit

NOTE: TECHNICAL INFORMATION
Before removing the hydraulic unit, the vehicle battery must be disconnected without fail!
The vehicle battery must never be connected during a repair!
Otherwise a brake bleeding procedure must be carried out after the repair.
For additional information: see VENT BRAKING SYSTEM (DURING PART EXCHANGE) .
The vehicle battery may only be reconnected when the brake system is completely filled with brake fluid and vented!

NOTE: TECHNICAL INFORMATION
Use only BMW-approved brake fluids.
For additional information see: "Fluid Capacities" tab for the selected vehicle.

Preliminary work

Refer to DEACTIVATING VEHICLE ELECTRICAL SYSTEM .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING WINDSHIELD PANEL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE TRIM PANEL FOR PEDAL ASSEMBLY .

Unfasten plug connections (1) .
Remove the cable clip (2) .

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Disconnect plug connection (1) .

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NOTE: TECHNICAL INFORMATION
Do not interchange brake lines. Mark the brake lines before disassembly (for example, VL/VR/HR/HL).
Do not bend brake lines.
Close off connecting bores with seal plugs.
Unfasten brake lines (1) .

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Retract release tool 2 409 646 between brake pedal and brake booster.
Place support (1) of the special tool (release tool) 2 409 646 on the bearing bracket. If necessary, position the support (1) permanently by turning the screws on the special tool.

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Press the special tool 2 409 646 in the arrow direction and lever the brake pedal from the brake booster.

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Loosen nuts (1) .

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Remove hydraulic unit (1) .

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