See also:

PSI (pounds per square inch)
A standard unit of measure for tire pressure. ...

Notes on technical data
The data stated here specifically refers to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

Adjusting the lumbar support
You can adjust the contour of the front seats so as to provide optimum support for your back. Move adjustment lever 1 in the direction of the arrow until the desired backrest contour is ...