Important: The installation instructions are not included in the retrofit kit. Print out the latest installation instructions from the Aftersales Assistance Portal (ASAP) and issue to the customer. ***** ***** An exchange of the "Lüfterzarge mit Lüfter" and "Kühlmittelkühler / ausgelagerten Kühlmittelkühler" may be necessary. If on the picture panel in the main group 17 there is a "Lüfterzarge mit Lüfter" and "Kühlmittelkühler / ausgelagerten Kühlmittelkühler" designated to the OE trailer tow hitch, then this part number has to be ordered and installed as well. ***** ***** ***** On vehicles with OE322 deactivate the Smart Opener; to do so remove aerial with wiring harness and tie back connector. ***** ***** Various trim panels must be replaced, refer to EPC for these. (see reference picture panel) ***** ***** If changing the fan, consult the picture panel in EPC for the corresponding module and power distribution box. ***** In some engine versions it may be necessary to exchange the heat insulation. *****