This system is controlled by the IR sensor on the door handle outside, if you press the lock or unlock on the smart key while aimed at that sensor - it will rolldown or rollup all windows and sunroof.

Try doing that from outside the car - the sensor is on the door handle near the keyhole.

Also make sure there is no damage to the wiring passing into the front door itself.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)