jdinaz

does the 2010 C-300 have a separate fuse for OBD connector? the lighters and everything else in mine work perfectly but OBD shows no voltage. therefore, i failed the emissions test. thanks for suggestions.

puhuta

I am having the Sam problem with my 2010 C350 Sport. Fuse 16 is described as "diagnostic socket" and can be found under the hood. Mine, however, was fine and my lighter etc are all working.

jdinaz

i found the answer, which is that i do have a separate fuse for obd, which is 7.5. changed it out and everything is fine. on mine, the fuse was in the trunk compartment, which is where i also found the fuse diagram. i checked to see if it was good by swapping it with the fuse for the emergency flasher, which is also 7.5.