Coolant Change-Over Valve 2 -N633-, REMOVING AND INSTALLING, AUDI A6/A7: Installing

WARNING: This page is about a different car, the 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Install in the reverse order of removal while noting the following:

Secure all hose connections with hose clamps that match the ones used in series production. Refer to the Parts Information.
Used coolant cannot be used again.

-- Add the coolant. Refer to COOLANT, ADDING AND COOLING SYSTEM, BLEEDING, HIGH-VOLTAGE SYSTEM COOLING CIRCUIT .

-- Drain and fill the coolant for the high-voltage system cooling circuit only if the coolant loss is greater than 500 ml. Refer to COOLANT, DRAINING, HIGH-VOLTAGE COOLING CIRCUIT and Refer to COOLING SYSTEM, FILLING, HIGH-VOLTAGE SYSTEM COOLING CIRCUIT .