How do I calibrate my BMW 530D fuel gauge after fitting new sensors?

I have had new float sensors fitted in my BMW 530d and my fuel gauge is under-reading by just under a quarter of a tank ie I ran out with the gauge showing just under a quarter full! My mechanic says there is nothing further he can do! Is it possible to calibrate the gauge to read correctly?
Tony Houghton, May 2010


done
To Neil Butterley: Many thanks. Do you know which of the two sensors it could be? I was advised that the offside one is the master. Is it possible to say which one is bent without having an unbent float sensor to compare with?

8 June 2010

Tony Houghton, June 2010
no, he is correct, the level sensor is in the tank, it must have been bent when fitted, it is the only, option , sorry, need to replace again !!!!!

neil butterley, June 2010
link Click here to see other fixes for BMW 530D.