See also:

Adjusting the height: manual head restraints
The height of the outer head restraints can be adjusted. To raise: pull. To lower: press the button, arrow 1, and push the head restraint down. ...

ConnectedDrive or BMW Assist
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General information
Do not adjust the seat while driving Do not adjust the driver's seat while driving, or the seat could respond with unexpected movement and the ensuing loss of vehicle control could lead to an ...