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#1
07-24-2009, 12:59 PM
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87 SDL Oil Level Sender
Out of the blue the other day my oil level light illuminates as I am heading down the road. Scared the crap out of me so I quickly pulled off the road and checked the dip stick. Oil level is fine, right in the middle of the upper and lower marks just like it's been since I last changed the oil.
The light now comes on occassionally but as before the level remains fine. Pressure is good as well, just below 2 bar when hot and of course pegs at 3 as soon as I come off idle. So, I assume I have a flaky Oil Level Sender and will replace at the next oil change unless someone can offer a different opinion.
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Joe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1980 300SD - 495k miles - 'The Ambassador' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Former Family Members 95 C280 73 280SEL 90 300D 87 300SDL (X2) 86 560SEL 84 300D 80 300SD 
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#2
07-24-2009, 01:01 PM
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check the wiring and ground connection
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1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k)
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#3
07-24-2009, 01:10 PM
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My oil level light also comes on intermittently when the level is in between the high and low mark. I normally do not worry about it as long as the oil pressure is good. I change my oil every 3K miles and so it is almost time to change oil when it happens. It is only a warning light, just like your coolant light.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.  W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#4
07-24-2009, 04:23 PM
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That sender is like $60....
 Mine likes to come on when the oil is at the middle of the stick too. I ignore it.
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#5
07-24-2009, 04:52 PM
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oil sender
Mercedes issued a procedure for testing the sensor apparently they were prone to flakyness . I know mine is . The TSB according to Alldata is
REF. NO. 18/41 Cheers Dan
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It's always something simple 91 300D 603.960 (from japan) 194K 92 Toyota Diesel Landcruiser HDJ81-t 116K 02 Golf TDI new head courtesy of PO 87 300D 97 BMW 525 TDS Wagon 5spd bunch of Onan and other diesel generators
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#6
07-24-2009, 09:37 PM
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Joe I got the same issue, unless oil level is at top or even over filled i get oil light when I make sharp left hand turns. I guess I need a new sender as well, let me know if you want me to order you 1, I will prob be ordering 1 soon.
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Paul Benz-less  I need an SDL !
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#7
07-24-2009, 11:48 PM
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Mine comes on when I'm a quart low. That's just fine with me.
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) 
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#8
07-28-2009, 09:35 AM
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Think I will just live with it as is for now. Some days it comes on and on others it comes on for about 10 seconds.
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Joe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1980 300SD - 495k miles - 'The Ambassador' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Former Family Members 95 C280 73 280SEL 90 300D 87 300SDL (X2) 86 560SEL 84 300D 80 300SD
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#9
07-28-2009, 11:04 AM
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The Don wrote of this problem last week as well. My SDL has the same issue, I ignore it after a quick glance at pressure. If it does come on it's usually real close to service time. Sort of my time to service light.
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o)
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#10
07-28-2009, 11:33 AM
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When the low-oil light works properly it's a nice feature. When it doesn't it's a PITA.
My '96 beeps and says "low oil" occasionally even though it has a brand-new sensor. Since the engine uses no oil, it mostly gets ignored. This may simply be another problem with the wiring of that era and the "environmentally friendly" insulation. OTOH, my '87, which does use (leak, burn) oil, illuminates its light when the oil level is down to the bottom mark on the dipstick. Then I know it's time to add or change.
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 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .343,000 miles Wife's car 2005 E320 CDI . . 148,000 miles My car Santa Rosa population 177,300 (2026 projected) Total. . . . . . . . . . . . 668,300 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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