my low fuel light wont go off on 2005 Porsche Cayenne

fuel warning low fuel light stays on all time the picture garage fuel pump stays on even after fill up tank alays never below halfe full when i start engine a warning beep tells me to refuel checked instrument cluster with duramtric/piwis but shows no fault.any one got any ideas whats goin on .thank you

by in Guaynabo, PR on January 11, 2013
2 answers 4 comments
ANSWER by on January 11, 2013
Fuel level sending unit (gas tank float) has probably malfunctioned and no longer is sending a proper signal to gauge as to fuel level. Need to have checked and probably replaced.
COMMENT by on January 12, 2013
i dont think its that because fuel gauge seems to be working fine . thanks
ANSWER by on January 11, 2013
scan codes and see whay codes you get. something relating to fuel level sensor i suspect
COMMENT by on January 12, 2013
thats what i cant understand im getting no codes about fuel problems or gauge problems . thanks
COMMENT by on January 12, 2013
that can be the case,you will not always get a code for fuel level sensor. seek diag and have it tested
COMMENT by on January 12, 2013
ok thank you i will try that.