reading

So my 99 328i is reading 1/4 tank when full. The cluster test shows that the gauge is fully capable of sweeping the full range, and test 6 on the cluster for diagnostics shows 240000 or 24L from the left sender and 0 from the right. So I replaced the entire unit on the right and still have the...

The whole time i've had my car it's read -40 as the outside temperature display. Now i've had enough of it's beeping that its -40 everytime i start it.. I've looked around and tried to find the temperature sensor, looked it up online to try and find where it is, but i think i need a jack...