In the glove compartment

Push the handle up, arrow 1, and open the lid, arrow 2.
See also:
INTERIOR
The X5's interior lives up to luxury standards; it's not flashy, but the
quality materials used inside and the attention to detail tell you it's no
ordinary vehicle. My test car had upgrades like ...
General information
Front
Two different driver's seat, exterior mirror, and
steering wheel positions can be stored and retrieved
for each remote control. The adjustment
of the lumbar support is not stored.
Rear ...
Radar sensors
The radar sensors are located under the rear
bumper.
The system may not be fully functional in the
following situations:
Dirty or icy bumper.
Stickers on the bumper.
A Check Control me ...
