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#16
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This thread is a couple years old and having done countless cylinders since then I wanted to share some advice learned this week.
Make sure the cylinder is really the culprit. I was getting the tell tale signs of the failing cylinder so I ordered a new one from MB. After replacing it I still had the same sticking key symptoms. If I would have investigated before spending $100 I could have simply bought the new ignition mod for $28 which is the problem. Don't be fooled investigate before you buy.
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#17
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Quote:
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#18
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Benz considers it a ILH, which is probably more confusing in the world of acronyms.
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#19
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Also, is there a photo of the ignition module..........is this the electrical portion of the "ignition switch"? We all point to the tumbler as the culprit every time a member can't turn the key. This is likely not correct in certain situations. |
#20
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Yeah, what exactly is this $28 item and where is it located?
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#21
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Brian the tumbler needs to be removed and then using a flat blade screwdriver I could feel it "catch" when turning clockwise. The ignition module is the electrical part of the ignition lock housing. You are correct on assuming the tumbler is always the culprit - that's why I didn't hesitate to replace when the SDL ignition starting acting up. only to have the same problem with the new key and tumbler.
This is the part for the SDL
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#22
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Sorry for the slight re-direct here. Has anyone used and had success with the replacement ign. switch available at ********AZ? I'm getting ready to do this job this weekend. Made by contitech. Link herehttps://www.***************/search/product.aspx?sid=ju35q5jdxjjemmivezbwv1ju&makeid=800016@Mercedes&modelid=1193004@240D%20&year=1983&cid=25@Ignition%20Parts&gid=4512@Ignition%20Lock%20%26%20Tumbler
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#23
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The keys that come with them are alluminum or some sort of light alloy. I didn't like the fact that ignition and doors where different keys, sort of anal on my part but went to dealer and bought the right part.
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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) |
#24
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Thanks John. Well, that certainly presents diagnosis problems for new folks. I suppose that the tumbler should be replaced "on principle" and that the ignition module should be checked when the tumbler is out. |
#25
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I hate to be a stickler for technicalities here, but "ILM" does not appear in any factory documentation I can find, at least for the 124 chassis. And "ignition module" is never used in reference to the electrica switch behind the lock cylinder.
The part shown in the photo above is referred to as the "starter switch" in the older print manuals, or in the newer CD manuals it's called "ignition/starter switch" or "glow/starter switch"... click here to see the PDF file. In the EPC, it is called "ignition switch". I replaced this switch on my '87 a year or two ago, because it would not always engage the main HVAC blower motor unless the key was turned back (CCW) slightly. The new switch fixed this annoyance. And that switch is a PITA to replace, even with the dash removed! This is an ignition module (aka EZL ignition control unit, or ignition control module (ICM)). ![]() |
#26
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Pffft
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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) Last edited by TX76513; 07-08-2008 at 12:00 PM. |
#27
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#28
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Thanks, this is vital and much appreciated information. Does it apply to the W123s as well?
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#29
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#30
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There are (at least) two different units for the 126, my '91 had the later 2-pin release like the 124 has, plus the ILH has the shift-interlock.
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