Originally Posted by atombaum

Hello,

My low fuel warning light started to come on dimly this week, with more than half a tank of fuel (240D). When I topped off the tank, the light went out for a few miles. Then it came back on. Today, I replaced the voltage regulator to no avail, and checked the fuel level sending unit, but I did not get the fastener off the bottom, so I did not inspect the wires. It seemed like some black crud was coming out the top holes when I held it upside down. Is this probably a sending unit issue? I only replaced it seven years ago when I got the car because it was not working at all at that time. Price of a new unit must be over $100 by now. Don't want to spend it if I don't have to. BTW, this 240D now has 353,576 miles.