Cylinder Bank 2 (Left):

WARNING: This page is about a different car, the 2018 Audi S6, 2017 Audi S6, and 2016 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

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-- Open the clamps -1 and 4- and remove the coolant hoses.

-- Free up the coolant hose -arrow-.

-- Disconnect the connector -2-.

-- Remove the bolt -3-.

-- Remove the coolant reservoir upward from the mount and move it towards the front.

Continued for Both Sides:

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2-.

-- Remove the bolt -1- and then remove the cam actuator.