Rear bench seat through-loading feature

See also:

Adjusting the head restraints manually
Adjusting the head restraint height The head restraints must only be removed at a qualified specialist workshop. Mercedes-Benz recommends that you use a Mercedes-Benz Center for this purpose. ...

GAWR (Gross Axle Weight Rating)
The GAWR is the maximum permissible axle weight. The actual load on an axle must never exceed the gross axle weight rating. The gross axle weight rating can be found on the vehicle identificat ...

Adjusting the front-passenger seat from the rear
WARNING When adjusting the front passenger seat, make sure the seat, if occupied, is as far from the front passenger front air bag as possible. Otherwise, the passenger could be seriously ...