Quote:
Originally Posted by M_Bimmer
Miniminally:
1. 4-zone distribution box under the dashboard
2. Center console w/ rear motor
3. Center console rear vent control unit and vents
4. Front center vents assembly w/ two temp thumb wheel version
5. Front left and right dashboard vents for 4-zone
6. Rear right and left floor vent stratification + heater + temp sensors
7. Wiring harness from front ventilation controls to items 3, 4 & 5
8. Wiring harness from item 4 to both item 2 and to item 6
9. Code for 4-zone
Note 1: Item 5 will require heavy durty wiring from the rear fuse box for the heater elements
Note 2: Rear controller HKA also supports rear heated seats, so you'll either need to wire your current non HKA controlled version to the HKA, or leave it disabled
Note 3: The disassembly of the center console to remove the front dashboard, and then change out the front distribution box will be where most of the labor and effort is required in this mod
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So im thinking of only doing the partial 4 zone climate control retrofit mainly to increase the air flow for the rear while keeping the original heated seats function but without additional footwell heating modules or anything.
According to this thread, they said:
https://www.bimmerfest.com/threads/2...ir-con.828555/
Parts:
Front grille with 4 zone climate control 64229166891
Rear Center Console Cover 51169206781
Rear Blower 64119311853
Rear Center grill 64229172344
4-zone rear controller w/ seat heating, w/o ceramic knobs - 61319290751
4-zone center console, storage compartment (qty 1) - 51169206729
On the electrical part
1) Connectors and cable from rear center control unit to the rear center grille vent.
2) Connectors and cable from the rear blower to the rear center control unit.
3) Power for the rear center control unit to be taken from the front fuse box (behind the glove box).
4) Power for the rear blower to be taken from the rear fuse box (at the trunk).
5) Power for the lighting on the rear center grille vent to be taken from the LED lighting for the center storage box.
6) Connection to CAN bus.
7) For heated rear seats, run LIN bus wires from the two rear seat heater controllers to the JBE.
Is there anything else I'm missing to accomplish just control air flow from the center console blower to increase the airflow based on what the front driver setting is?