hi,,,i have a 95 jaguar xj sport 4 litre and im having problems with the trip computer,it doesnt work,if i prees the odo button nothing happens,if i press the reset buton it show.mpg etc but doest not show what mpg im geting or anythang esle.so when i press the odo butoon after the reset button the computer goed back to the miles the casr has done.so both bottons are working......i cant get my trip counter or anything at all to show up