280se auto

i just wondering what all those vacum tube.....a silver box on the right side(view from front toward back)?

[mikemover]

I can't tell exactly what you're talking about from the picture and description, but your vacuum system does the following:

Provides power assist for the brakes
Tells the transmission when to shift
Makes the central locking system work
Cruise Control
Climate controls

That's all I can think of...If there's something more you need to know, please post a more specific question and photo.

Hope that helps,
Mike

i don`t think mine got cruse control.........and then on the same side.....ther is one plastic cap and if i open it ,ther is 6 holes......what is that for?

[mikemover]

That is what I think MB calls the "diagnostic socket" or "plug". Something like that. On a diesel car like mine, there is a tachometer amp plugged into it to make the tach work. On a gas engine, an RPM counter device can be plugged into it at the dealer/shop/garage for various diagnostic purposes.

Mike