the thin wires from the right sender are the level sender. The left side only has two wires.

You need to measure the Ω from both of those they range from close to zero (empty) to about 450 Ω when full.

If those don't register than of course the car can't tell how much fuel you have.

Hoping you kept some of the gear you replaced much of that can be refurbished.

If the sending units are sweeping though the range then you need to look for a broken or shorted wire between the dash and fuel senders

The fact lifting the car made a difference suggests either wires tugged on or a float that got stuck.

I had a replacement sending unit with a different size float, that got stuck occasionally.

Zero liters hints at a short so that will be my first bet.

When one of the level senders is shorted, I think the system gives up

Since you did get a reading for the left side the fault should be on the right (which does correspond to the Indy determine right side sender).

I don't know the path the wiring for the fuel pump loom takes but you can see a bit though the access hole under the seat.

Pull the access panel and meausre the right side sending unit Ω. Then meausre the Ω of each of the connector side to a ground and to each other. I do not know what the normal readings are but as I have my wife's fuel pump in my basement at the moment it won't be difficult for me to go find out.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)