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      11-08-2012, 04:55 AM   #5
wdimagineer
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Drives: 2014 X5 xDrive50i ZMM
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Physically the controllers are the same dimensions so that at least doesn't prevent a retrofit and also means BMW doesn't have to redesign trim elements. A software upgrade will be required, for certain. On vehicles without touch, coding can probably enable it.

The only thing that might be necessary is additional wiring, but I suspect the existing connector can transmit the touch data. It is only 4 wires (12V, GND, data in, data out) but is fully bi-directional.
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