rear seat and average mpg information

Hi new member here, 

I was wondering what the cable on the back seat is for, I can't find any information in the handbook, also the MPG average info on the dash only reads around 43 MPG, it used to read much better than that and when I press the button to re-set it to zero it doesn't do anything, I know from filling up that it is doing better MPG than what it is showing, this is on a 2012 urban cruiser 1.4D 4D.

Any ideas would be much appreciated, thanks.

Colin

Topic moved to the Urban Cruiser forum