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Old 04-19-1999, 06:47 PM
rebob
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Recently, I filled the tank of my '99 E430 and noticed that the gauge did not register full, but only ~7/8th's full. After driving for a short while I noticed that the gauge went to ~ 3/4th's full. I stopped by my MB dealer to find out what was going on. Service rep told me that it probably had something to do with the fuel sender not having the same resistance as the system, and
that it would probably balance itself in a short time. I took an appointment to have the system checked by the technicians. The gauge did register full later in the day, but the next morning it at first registered 3/4, then shortly went to full, then back to 7/8th's. Car went into dealers on Friday and they were to check out the electrical system. They found out that one of the fuel sending units was defective (p/n 210-542-08-17) and it was replaced. This was covered by the warranty as the car has only 2,446 miles on it. I will keep a close eye on it - apparently it is OK now.

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Bob Parsons
  #2  
Old 04-19-1999, 11:07 PM
Benzmac
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Thanks for the info. We need input like this from owners!!

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Benzmac:
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  #3  
Old 04-20-1999, 12:09 AM
Bill Wood
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My '98 E-430 rarely fills up to the full mark on the gauge. It seems to work
better with some gas pumps than others. Often it will show almost full
when I fill it but then drops to 7/8 after driving 2 or 3 miles. I assumed it
was some sort of over zealous "anti top off" feature to prevent spillage.
If your dealer was able to fix the problem for good, please let us know.



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'98 E430
MBCA-Peachtree
  #4  
Old 05-01-1999, 10:37 AM
Bob I
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The fuel guage on my 1998 E320 started registering about 7/8 to 3/4 full after a complete fill up. This happened after it was about 5 or 6 months old, but prior to that it worked fine. The dealership is going to look at it the next time I take it in for service. Based on various comments about this problem that I have seen, and a discussion with my salesman, I think the newer model fuel guage is not up to Mercedes standards. The dial looks like the old Benz, but I think they are completely redesigned and poorly at that. It appears that a high number of the newer models have this guage problem. The salesmen said the fuel tank is pressurized and that also contributes to the fuel guage failure problem. Is that a possiblilty? Unless Mercedes redesigns the quages, we might be faced with inaccurate readings that could be costly to fix once the cars are out of warranty.
  #5  
Old 05-01-1999, 11:21 PM
M.B.DOC
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Don't put all of the blame on Mercedes, Uncle Sam has their fingers in the "cake" also. The new emission laws require car makers to install "On-board vapor recovery systems" on 60 percent of the new cars. This system makes it hard to completely fill the tank. Other car makes are having the same problems.

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