See also:

Emergency Tensioning Devices, belt force limiters
The front seat belts and the outer seat belts in the rear are equipped with ETDs and seat belt force limiters. The ETDs tighten the seat belts in an accident, pulling them close against the body. ...

Styling
Riding lower than a crossover but looking sleeker than a minivan, the R-Class might best be described as a large wagon. It's nearly as long as Mercedes' flagship S-Class full-size sedan, but wider ...

Removing the mechanical key
Removing the mechanical key Push release catch 1 in the direction of the arrow and at the same time, remove mechanical key 2 from the SmartKey. ...