Rear
In the center armrest.

Pull the center armrest forward at the strap.
To open: press the button.
To close: push both covers back in, one after the other.
Pushing back the covers
Push back the covers before folding up the center armrest; otherwise, the cupholder could become damaged.
See also:
DTC Dynamic TractionControl
The concept
The DTC system is a version of the DSC in which
forward momentum is optimized.
The system ensures maximum forward momentum
on special road conditions, e.g., unplowed
snowy roads, bu ...
The Appendage Factor
M cars have had what I call a high appendage factor — the feeling that the
car is an extension of the driver. It's typically experienced in cars whose
various systems and characteristics are well- ...
Tire inflation pressure values over 100 mph/160 km/h
320i
328i
335i
...
