Daz, sorry to jump on your thread but it is relevant - can someone also tell me how the F**k to change from L/100Km to mpg please on the OBC. I used to know, then lost the booklet with the info in, then forgot.
select fuel consumption mode and use a ballpoint pen or similar to adjust the display value.
in mpg mode the temp is displayed in farenheit and in litres per 100km its celsius