Left Radiator Housing With Temperature Doors, Removing And Installing: Installing

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Installation is carried out in the reverse order while observing the following.

-- Check the groove -A- on the left radiator housing -F- and the spring on the A/C unit -B- for damage.

Fig 1: Checking Groove On Left Radiator Housing And Spring On A/C For Damage

Courtesy of AUDI OF AMERICA, LLC

NOTE:

If the groove -A- on the left radiator housing -F- or the spring on the A/C unit -B- are damaged, seal these with, for example, Silicone Adhesive D176 001 A3.

-- Check the heater core -C- and evaporator -D- for dirt; clean if necessary.

-- Check the foam seals on the heater core -C- and on the Auxiliary Heater Heating Element -Z35- (or on the honeycomb on vehicles without an Auxiliary Heater Heating Element -Z35-) for damage.

-- Insert the grooves -A- on the left radiator housing -F- into the springs on the A/C unit -B- and push the left radiator housing -F- into the A/C unit.

NOTE:

Pay attention to the connecting rod to the right temperature door -E- and the lever on the defroster door -G- (and the lever on the door for the left center instrument panel vent on vehicles equipped with the "Convenience" A/C system).

-- Install the removed parts in the opposite order.

-- Turn on the ignition.

-- Perform a basic setting and the output diagnostic test mode for the A/C system using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.

NOTE:

On this vehicle, the actuators are equipped with electronics. During the basic setting, a new actuator learns its position on the A/C unit and can then be activated by the Climatronic Control Module -J255- A/C display and control head (currently all actuators are identical) using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.

During the basic setting, the actuators are assigned and adapted corresponding to the switching sequence of the wiring. If this sequence does not conform the specification, the adjustment motors will adapt incorrectly and the door control will be wrong. Refer to MAIN WIRING DIAGRAM FOR A/C SYSTEM ACTUATORS (A/C system actuators block diagram).

-- Check the DTC memory for the Climatronic Control Module -- A/C display and control head and erase any displayed malfunctions, if necessary using the Vehicle Diagnostic Tester in the "Guided Fault Finding " function.