Coolant Pipe On Heat Pump Valve Unit, Removing And Installing: 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.
Replace the O-rings. Refer to REFRIGERANT CIRCUIT SEALS .

-- Fill the cooling system. Refer to COOLING SYSTEM, FILLING, HIGH-VOLTAGE SYSTEM COOLING CIRCUIT .

-- Check the routing after securing refrigerant lines. They must be inserted in their brackets and must not come into contact with other components.

-- Drain and fill the refrigerant circuit. Refer to Refrigerant Circuit (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) or Working with A/C Service Station .

-- Switch the ignition on.

-- Initiate the basic setting of the A/C system using the Thermal Management Control Module -J1024- and activate the electric valves using the routine Stop routine refrigerant circuit filling/flushing in the Vehicle Diagnostic Tester in the Guided Fault Finding function.

-- Start the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .