Brake Master Cylinder, Removing And Installing, LHD Vehicles: Removing

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

-- Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Hybrid vehicles

-- Remove the Electric Drive Power and Control Electronics -JX1-. Refer to the appropriate Service Information .

-- Remove the bracket for the Electric Drive Power and Control Electronics -JX1-. Refer to the appropriate Service Information .

Vehicles with Turbocharger:

-- Remove the air filter housing. Refer to OVERVIEW - AIR FILTER HOUSING .

-- Remove the air duct hose between the turbocharger and the air filter housing. Refer to OVERVIEW - AIR FILTER HOUSING .

-- Remove the intake tube on the turbocharger. Refer to TURBOCHARGER, REMOVING AND INSTALLING, DNFC, DNFE, DNFF, DNFG, DSFB, DSFE AND DSFF .

Vehicles with 12 V engine compartment battery

-- Remove the battery. Refer to BATTERY, REMOVING AND INSTALLING .

-- Remove the battery tray. Refer to BATTERY TRAY, REMOVING AND INSTALLING .

Vehicles with 12 V luggage compartment battery

-- Remove the air filter housing. Refer to OVERVIEW - AIR FILTER HOUSING .

Vehicles with Diesel Engine:

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-- If equipped, free up the wiring harness -3- on the brake line -5-.

-- Move the NOx Sensor Control Module -J583- to the side.

-- Unclip the cable holder -4- on the brake line -5-.

-- Remove the bolt -2- and remove the air duct pipe -1-.

Continuation for All Vehicles:

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-- Place sufficient lint-free cloths in the area of the motor, subframe and transmission.

-- Extract as much brake fluid as possible from the brake fluid reservoir -1- with the Brake Filling and Bleeding Equipment:VAS6860US -A-.

Vehicles with Manual Transmission:

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-- Remove the return hose -4- on the clutch master cylinder -3- and on the brake fluid reservoir -1-.

-- Close off the clutch master cylinder hose -4- using the Engine Bung Set:VAS 6122 or the Hose Clamps - Up To 25mm:3094 .

Continuation for All Vehicles:

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-- Release and disconnect the Brake Fluid Level Warning Switch - F34- connector -4- from the brake fluid reservoir.

-- Unclip the wiring harness -8- on the brake master cylinder -1-.

-- Remove the brake lines -3- and -5- on the brake master cylinder -1-.

-- Seal off the threaded holes immediately using the Plugs:1H0 698 311 A or plugs with assembly part number 5Q0 698 311.

-- Seal the brake lines with plugs from the Repair Kit part number 1H0 698 311 A or with the Engine Bung Set:VAS 6122 . If necessary, place the breather valve dust caps on the brake lines.

-- Remove the nuts -7-.

-- Release and remove the connectors -2- and -6-.

-- Carefully take the brake master cylinder -1- out of the brake booster.