do you see the gear indicator light work on your gauges? If you dont then the transmission wont actually shift into any ratio.

It can be from a bad shift lever unit all the way to a dodgy connection that is taking the data bus down.

__________________
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)