Whats the location of the OBD II port on the S320cdi 2009. How do i access it. Will the usual software work on the Merc too?

 

I am guessing (from other models) that it is under the dash near the parking brake release handle.
It probably has a hinged cover.


If your reader does ODB and CAN it will get you most of the standard codes. but not the MB specific stuff.


still a good start depending on the issue you are having.

 

Under steering wheel next to bonnet release latch. Under plastic flap