See also:

Emergency Tensioning Devices, beltforce limiters
The seat belts for the front seats are equipped with ETDs/belt buckle tensioners and seat belt force limiters. The outer seat belts in the second row of seats are equipped with ETDs and seat belt f ...

Overview
The third generation of the Mercedes-Benz M-Class sets new benchmarks in the SUV world with its leading-edge automotive technology. The new M-Class boasts optimum energy efficiency, leading standa ...

System self-test
The indicator lamp illuminates when you: • turn the SmartKey to position 1 or 2 in the ignition lock • press the KEYLESS-GO Start/Stop button once or twice If an adult occupant is properly s ...