Fuel gauge inaccurate – shows half tank when full, or full when half – 2009 Patriot 2.0 CRD

Hi everyone, I own a 2009 Jeep Patriot 2.0 CRD (European diesel model). I’m having a weird issue with the fuel gauge: sometimes when I fill up the tank, the gauge only shows half full. Other times, with less fuel, it reads as full. The readings are very inconsistent. No check engine light, and the car runs fine.

I’m aware the fuel level sensor (float in the tank) is a common culprit, but assuming that component is working properly: • Could this be a wiring/connectors issue? • Has anyone had this caused by a faulty TIPM? • Is it possible for the instrument cluster to misread the correct signal? • Any experience with recalibration or software reset fixing this?

Any insights would be super helpful. Thanks in advance!