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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

View Poll Results: Has your gas gauge ever had a false reading?
Yes, but it never happened again, under warranty? 0 0%
Yes,, happened once not under warranty. Fixed DIY ! 0 0%
Yes, has happened on several occasions 1 20.00%
No, has never happened. 4 80.00%
Multiple Choice Poll. Voters: 5. You may not vote on this poll

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Old 04-05-2013, 04:59 PM
CyndyB CyndyB is offline
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Location: Dallas, TX
Join Date: Apr 2013
Posts: 8
Mein Auto: 2004 325ci E46
Question Fuel Gage is always reading empty !!!!

My 2004 325ci has been really good to me, however, recently my fuel reading is never on point. I have replaced fuel filter, fuel pump/sender, and left sender unit. I am still getting this bad fuel reading. I read somewhere that the circuit board that is attached to the left sender unit slips out of place and sometimes causes this problem. Has anyone had this problem and actually fixed it in a DIY situation? Please help as the BMW dealerships are not as kind when your vehicle is out of warranty and paid for!
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Old 04-06-2013, 11:23 AM
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SJBimmer SJBimmer is offline
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Location: In This Place
Join Date: Feb 2007
Posts: 3,810
Mein Auto: 2004 325 Convertible
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Old 04-06-2013, 07:33 PM
GoForthFast GoForthFast is offline
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Location: New York
Join Date: Jul 2004
Posts: 3,508
Mein Auto: '04 330Ci 6-speed
I'm not seeing how that thread helps her out much. But I would try the gauge cluster sweep test if I were her.

Then I'd also add using the OBC hidden functions to pull up the individual sender readings to see what that produced. If you get that far, report back here with each sender reading.
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File Type: pdf OBC hidden functions.pdf (33.2 KB, 47 views)
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empty, filter, fuel consumption gauge, pump relay, reading, sender

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