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#2
07-24-2008, 03:00 PM
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Clean the sender, fuel sludge can make it stick.
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#3
07-24-2008, 03:28 PM
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What would make the light stay on all the time, even if the tank is full?
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#4
07-24-2008, 03:37 PM
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Sludge holding the switch down and/or shorted wires.
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#5
07-24-2008, 04:45 PM
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I have more difficulty with it refusing to come on when I'm legitimately low.
__________________
 ~Michael S.~ Past cars: 1986 300SDL 1987 300SDL 1982 240D 1982 300SD Current: 1987 300SDL
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#6
07-26-2008, 03:37 PM
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Quote:
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83 SD 84 CD
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#7
07-26-2008, 05:04 PM
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W210 low fuel light
My W210 car has the opposite problem -- the light is on dimly all the time and doesn't illuminate even when the gauge is on "R." It has only two wires from the sender -- there's no separate switch and wire as in 123 and 124 cars. The sender is a zero to 2000 ohms rheostat that the electronics in the instrument cluster turns into a signal for the fuel gauge. I have to remove the cluster to see how the electronics work -- or rather, doesn't work.
Jeremy
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 Last edited by Jeremy5848; 07-28-2008 at 01:22 PM. Reason: Typo
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#8
07-27-2008, 12:55 AM
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Algae/Fungus relief
Startron
__________________
'84 300SD sold 124.128
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#9
07-28-2008, 01:27 PM
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Update -- pulled the W210 cluster. It's all surface mount. Easy to R&R, only two plugs for the whole thing but probably impossible to repair.
The low-fuel light is driven by a small IC, beyond my ability to diagnose or repair. I suspect Mercedes would just replace the entire assembly at a cost I probably don't want to know. Unless I get lucky and find one in a junkyard, I'll probably just live without it. Wife and I were both raised on cars that didn't have warning lights for fuel so we're used to keeping an eye on the needle. Interestingly, my 1963 Alfa Romeo Guilia Spyder had a low fuel light in its cluster -- I didn't even know what it was for awhile, had never seen one. When did Mercedes start with low fuel lights?
__________________
"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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