Various trim panels must be replaced, refer to EPC for these. (see reference picture panel) ***** ***** 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. ***** ***** It may be necessary to replace the "fan cowl with fan". If a "fan cowl with fan" is reported in the diagram panel in main group 17 for the trailer tow hitch optional extra, this part number must also be ordered and fitted. If no part number is reported for the trailer tow hitch optional extra, the "fan cowl with fan" does not have to be replaced. ***** ***** ***** ***** 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. ***** With OE775 the rear trim panel does not have to be exchanged. *****