Yes, Aux ventillation is in the US manual, but that only removes hot air at a predetermined time, latent heat has an accumulator that stores engine heat for up to two days. Rest simple uses whatever heat in in the coolant and runs the waterpump and fan so the the heater core can be used to warm the cabin. Aux ventillation does not run the water pump, so it will not heat the cabit - only remove interior air and replace it with outside air.

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07 X5 E70 4.8i
04 Z4 E85 3.0