Auxiliary Heater Heating Element -Z35-, Removing And Installing: Installing
Install In Reverse Order Of Removal. Note The Following:
-- Attach the grille -A- to the Auxiliary Heater Heating Element -Z35- -B-.
The grille -A- prevents electrically conductive objects from short circuiting the heating elements -B- (which, for example, could happen via the instrument panel vents on the Auxiliary Heater Heating Element -Z35-).
-- Place the rubber grommets -C- on the pin -D-.
-- Install the wiring harness -C- on the heater and A/C unit as illustrated from the bottom toward the top. Be careful not to pull on or damage the wire connections to other electrical components on the heater and A/C unit when installing the wiring harness -C-.
-- Insert the Auxiliary Heater Heating Element -Z35- -B- pins with the rubber grommets -C- into the heater and A/C unit mounts -D-.
-- Install the Auxiliary Heater Heating Element -Z35- -B- in the heater and A/C unit opposite the direction of -arrow-.
-- Tighten the bolt -A-.
-- Reinstall the wiring harness -C- as shown and secure it to the mounting points -B- on the heater and A/C unit.
-- Check the wiring harness routing -C-. The wiring harness should be fastened in such a way so that it cannot make any noises and that it cannot touch other components.
Secure the wiring harness with additional cable ties and foam strips to keep it from moving or making noise.
-- Secure the connector -B- to the heater and A/C unit and reconnect the connector -A-.
-- Tighten the Auxiliary Heater Heating Element -Z35- Ground (GND) wire to the ground point -C- on the instrument panel crossmember (tightening specification: 9 Nm). Refer to Wiring Diagram.
-- Install the heater core for the front heater and A/C unit.
-- Install the glove compartment. Refer to STORAGE COMPARTMENTS, COVERS AND TRIM
After all components outside of the glove compartment have been installed, check the activation and function of the Auxiliary Heater Heating Element -Z35- through the "output diagnostic test mode" function on the A/C system and the Engine Control Module (ECM). Use the Vehicle Diagnostic Tester.
-- Retrieve the front A/C display control head Diagnostic Trouble Code (DTC) memory, and delete the displayed errors for the Climatronic Control Module - J255- (and the Rear A/C Display Control Head - E265-) if necessary, using the Vehicle Diagnostic Tester.