1.4hdi Fuel gauge blinking and beeping problems

Dear Citroen community, I am a new member very nice toy be on this forum.
I come from Europe Macedonia.
I own a 2004 citroen c3 1.4 hdi 68bhp 8v, and apart for beeing the best fuel economy car, it is a car that tends to break more often than i can say oohh sh*t not again. So living with the white smoke in the cold mornings then when warm nothing. Speedometar not working, servo somethimes works somethimes it does not, all four indicators flashing on its own. Reverse light does not work. Alanser was stuck. odometar not working. One time it managed to use 3.5 liters of oil in 2000 km, have no idea what it did with them. I sort of know how to fix them all, but the problem when i turn the ignition on, and the fuel gauge starts beeping and flashing, blikning for a minute or so and than it stops. Does anyone had that problem before and is there a fix for it.
I will be verry gradefull if someone can help me I am in pain with this car it keeps on spending my money. Thank you very much.

Hi vlavot

You have lots of faults to fix

With all these faults, I would hook up Lexia tool (from this link) and see how many have codes.

You can look at fuel level information in live data to see if its a problem with a level sensor, or more likely a connection to the level sensor. But either way, lexia can help diagnose these problems.