On the 98 E300 when my oil level is around half-way on the dipstick (maybe a little bit more), the oil level minimum indicator will come on. This seems clearly too high of a level for it to come on. Is the obvious solution simply to replace the sender or are there other possibilities?

The PO of my 99 had the same problem and replacing the sender did the trick.

Maybe the simplest solution is simply to add a bit of oil and keep driving.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Not a horrible problem to have. Half quart early is better than half quart late! Hahaha

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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
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I guess the downside would be if you had one of those engines that tend to burn oil down to the halfway mark. My indicator didn't go on until 9500 miles after last oil change, so I'm not too concerned.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Sherman

I had one on my 96 w210; sender was probably tired after 265k+ miles on it at that time.

I just went to Junk yard pulled it out of an old Gas W210 and put it on *cost $1 for entry into the J/yard and $1 for part. I was cheap and did not even bothered to change the "o" ring. Working perfect so far.

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06 MB E320 CDI 123k miles
14 Sienna (wife's DD) 36k miles
11 GL350 Bluetec 136k (Sold)
96 E300; 292k+ miles (Donated)
11 Sprinter 22K+ miles (Sold)

Mine also are a quart early. Sensitive low-level switches seem to be a common problem with Mercedes, the windshield washer bottle is also very conservative and alarms way too early, IMO.

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"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

I actually have a new sender sitting in a box....bought it for an 86 300SDL....same part used in the 98.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

I actually went to the effort of changing one, in either my '87 (OM603) or '95 (OM606), and it made no difference. Light still comes on when oil level reaches the mid-point between the dipstick marks.

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Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

That is about where mine goes off, 1/2 way between upper a lower marks, 1 quart low.

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Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO