Technical information

The active head restraints are integrated into the driver's and front passenger seats.
Function
In the event of a rear-end collision, the head is jolted to the rear because it becomes the most inactive part of the body
due to the long distance to the head restraint. This jolt movement may result in cervical injuries (whiplash).
To reduce the distance between the head and head restraint, the active head restraint swings forward to the head in the
event of a rear-end collision.
Two additional impact sensors and/or satellites in the rear of the vehicle activate the gas generator in the backrest during
a rear-end collision. The gas generator's piston rod moves a sliding piece. This sliding piece moves forward the support
tube to which the head restraint is attached, and thereby reduces the distance between the head and head restraint.
Depending on the height adjustment of the head restraint, adjustment travel of 40 to 60 mm may be produced.
Roll-over protection system
The rollover protection system is an additional safety function in some BMW convertible models. In the event of rollover
or other situations that encourage the vehicle to roll over, the rollover protection system extends, locks positively and
thereby helps maintain a large enough survival space for occupants.
The first thing is to gain access (support opening) to the (locked in or trapped) people. As with all other measures, the
patients should be treated with all due care.
.
Function of the BMW 1-Series E88, 3-Series E93, 6-Series E64 and MINI Convertible R57
Rollover protection of the 6-Series E64 in normal position and triggered (right)
Two extendable rollover protection bars are stored in a structure behind the two rear seats.
The rollover protection system is a separate system and is not linked to the airbag control unit.
On models in the 3 Series (E93), the control electronics (rollover protection controller) are installed in the structure next to
the right-hand rollover protection bar.
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