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#1
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How much of a problem is your mono wiper?
Just in general, I'm wondering how much of a problem your mono wipers is. I've had to replace my internal gearing which fixed the hardest problem of having to take the monowiper apart. That was no fun but the new plastic toothed gear-like running track fixed that completely.
But the problem now is the motors. I'm going on my 3rd re-manufactured mono wiper motor in 5 years. I think the original Bosch mono wiper motor on this car lasted 21 years, nearly 1/4 century. I got a re-manufactured Bosch by Cardone 5 years ago and it lasted for 10 months. Fortunately they have a lifetime warranty on them so I got a free replacement. That one lasted about 4 years and now the intermittent wiper mode is not working. I'm glad for the "lifetime warranty", but it's a lot of work to change these out. I don't want to be doing it in 10 months again with the new replacement one. I was tempted to pay $50 extra and just get a brand new one but they don't have lifetime warranties on them. |
#2
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If you don't want to replace it, don't buy Cardone. They're absolute trash. I've never replaced any on any of my cars and I'm sure they're all originAl.
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#3
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What good is a warranty on a part if you have to keep on changing it out? A wiper motor should last for decades unless it's a Ford. I'm pretty sure their normal supplier is Cardone...
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#4
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I had one die in my '95 sedan, replaced with a used assembly from pick-n-pull and no problems with the "new" wiper for a few years. The "new" wiper is OE.
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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 |
#5
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I have a '98 e300 and still have the original motor; I've had no trouble with it. I buy a new wiper blade every 12 to 15 months. An advantage of the mono is that I buy only one.
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#6
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I'd suggest buying a working used one, replacing all the grease in it, and then using it. It should really last pretty much forever if its kept lubricated.
__________________
2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold |
#7
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The wiper motor in my 190D is going strong after 31 years. About 12 years ago, I disassembled the transmission for clean and lube. That's about it.
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#8
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Owned several used MB's over the years with the monowiper. I never had any problems with any of them. They just worked, didn't have to touch anything.
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1998 E300 turbodiesel America's Rights and Freedoms Are Not The Enemy! |
#10
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Interesting! Where's the relay?
How do I fix/replace the relay?
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#11
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My w126 has a mono wiper.
I didn't own it long before I figured out that the left blade wears out before the other one. I removed the wiper arm on the right side and the LS cleans the windshield just fine, good enough for me.
That blade will last two times longer because it isn't wiping a dry area constantly. I still buy blade two at a time.
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84 300SD 85 380SE 83 528e 95 318ic |
#12
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I've generally had good success. On my 91, there's a problem with the transmission such that the arm doesn't fully retract. For the time being I've installed a shorter blade and am not overly motivated to get it repaired.
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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 |
#13
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+1 on junk yard rescue and rebuild yourself.
For those above who asked, where is the intermittent relay? 124 and 126 it is N10 relay, the second largest relay in the box. This also carries your turn signal flasher and rear defroster control/timeout. These are all straight wired circuits, fuse to switch to motor. The intermittent relay pulses the motor off and on intermittently. What it actually does is makes the motor go into a “wipe once then park” just the same as if you twisted the switch to II and then back to 0. I did a writeup on how this works a while back. Adding variable delay wipers to a W123 If you are having trouble with the intermittent, and swapping N10 does not help, then chances are the park/run switch is the issue. 210 it is integrated into the N10 and K4/1 front SAM in the back of the fuse box. There is no intermittent relay per se, there is only a high speed and low speed relay. The intermittent function is calculated from the logic in the front SAM. If you have a rain sensor the N10 gets CAN bus message about % obscurity from N72 the overhead control panel. The actual command to run the wiper is indirectly controlled from the stalk switch. The stalk switch does not switch the motor current, it only switches different resistors onto a control line that ends up in the ignition switch. In the switch the resistances are read and translated into CAN bus messages that go to the front SAM. The front SAM interprets these messages and closes the correct relays to operate the wiper motor as required.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#14
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Quote:
As an aside, there's a wonderful movie about the development of the intermittent wiper, called "Flash of Genius". It's must viewing for anyone interested in automotive history. Flash of Genius (2008) - IMDb |
#15
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My problem with mono wipers is speed. I never owned one of these cars new but at the age I get them, max isn’t fast enough for a downpour or bad road spray. Not a frequent issue around here but a cause for concern. jay_bob, can you rewire the relay for a 90* quick sweep?
Sixto 98 E320s sedan and wagon |
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