See also:

BMW X6: rear seats
The head restraints in the rear cannot be adjusted and cannot be removed. ...

Locking and unlocking
Pressing the buttons locks and unlocks the doors and the tailgate when the front doors are closed, but they are not secured against theft. The fuel filler flap remains unlocked. ...

Wheels with electronics for TPM Tire Pressure Monitor
When mounting new tires or changing from summer to winter tires or vice versa, only use wheels with TPM electronics; otherwise, the Tire Pressure Monitor will not be able to detect a flat tire ...