Front Expansion Valve, Removing And Installing: Installing

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

-- Check the support ring -D- for proper installation position and check the grommet in the plenum chamber rear panel for damage and proper installation.

-- Clean the connecting tubes -B and C- from the evaporator and check for damage.

-- Check the baseplate -A- for correct seating on the connecting tubes -B and C- to check the evaporator.

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-- Replace the O-rings -D and E- and check that it is positioned correctly in the groove from the connecting tubes -B and C-. Refer to the Parts Information for the correct version.

-- Coat the O-ring seals lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .

-- Clean the connections on the expansion valve -A- and check for damage.

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-- Install the bolts -G-.

-- Thoroughly clean all connections in expansion valve -D- and at refrigerant lines -B and C- and check for damage.

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-- Replace all O-rings and coat them with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS and the Parts Information for the correct version.

-- Make sure the O-ring seals fit properly inside the grooves in the connections of refrigerant lines -B and C-.

-- Install the nut -A- for the refrigerant lines -B and C-.

-- Check the routing of the refrigerant lines after attachment. They must be inserted in the provided brackets in a tension-free manner and must not come in contact with other components.

-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station .

-- Install the remaining removed components.

Vehicles with High-Voltage System

-- Switch the ignition on.

-- Vehicles with Heat Pump Function, Initiate the basic setting of the A/C system through the Thermal Management Control Module -J1024- and activate the power-controlled valves using the routine Charge/flush the refrigerant circuit stop routine  using the Vehicle Diagnostic Tester .

Continuation for all vehicles

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