See also:

Adjusting the side extensions
Fold the side extensions on the head restraint forward for increased lateral support in the resting position. ...

Owner's Manual for Vehicle
Thank you for choosing a BMW. The more familiar you are with your vehicle, the better control you will have on the road. We therefore strongly suggest: Read this Owner's Manual before starting off ...

Strength of the driver's and frontpassenger airbag
The strength with which the driver's and front passenger airbags are triggered depends on the position of the driver's and front passenger seats. To maintain the accuracy of this function over ...