I have 2003 Z4 when fueling the tank will only take approximately 7 gallons (14.2 gal tank) and the fuel gauge is at one half. I've tried to put more gas in but the tank seems to be full. Any suggestions?
2003 BMW Z4 3.0
I haven't tried anything. I'm hoping each time I get gas it will take more than a half tank. The low fuel gauge does work the warning light has come on when fuel is low.
Good morning- SOunds like one of the level sensors is not working.The design of the fuel tank is called a saddle tank.It basically has two sections that hold fuel,so it needs two sensors.When one sensor fails the gauge only sees one sensor therefore,1/2 tank,even when both sides are full.There are ways to confirm this using test steps in the instrument cluster,also removing the suspect sensor and checking the resistance.Hope this helps.