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post #11 of 24 (permalink) Old 06-27-2019, 01:40 PM
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@gli48 , strangely enough you might be able to "fix" the faulty switch.

I had a switch go bad on an older 300D for the sunroof. Oxidation took a tool on the little arms that live inside.

I broke it down, cleaned it, and put it back together. The little guy worked.

I'd give this a shot if you can. Worst case scenario, you have to source a new one.
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post #12 of 24 (permalink) Old 06-27-2019, 03:40 PM
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Smile Fan Speed switch- old lever system.

This is my RHD (ROTW) fascia with lever mechanism.
The left knob is the speed control.
I'll see if I can find the invoice for the new switch I bought.
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post #13 of 24 (permalink) Old 06-27-2019, 10:46 PM
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Checked with MB here--NLA
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post #14 of 24 (permalink) Old 06-28-2019, 05:35 AM Thread Starter
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Rowdie's post #10 is exactly what I have, Aussiemerc's picture is the same except for the headlight adjustment switch, which in my car is next to the light switch on the left side of the lower dash. Oddly enough, my console panel has cut out on the back matching the location of his headlight adjustment switch. Must be something like same part for LH & RH drive.

Okyoureabeast, I may have to resort to repair but the problem is the switch is riveted together so it may be a challenge to reassemble it. Id prefer to replace it, we'll see.
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post #15 of 24 (permalink) Old 06-29-2019, 08:27 AM Thread Starter
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Well, the dealer is still searching all their sources, will let me know by Monday afternoon. The owner of the dealership has an extensive collection of old Benzes that they maintain so they're used to searching for obsolete parts. Pelican Parts first shows it as genuine MB at $157.95, then flips over to NLA. Adsit has a used one for $350 with a 60 day exchange warrantee, but if they're that hard to find what do I exchange it for? I may start disassembly but the problem is how to hold it together if I can fix it. It's held together with 4, 1 1/4" (3cm) long, thin rivets. Not sure how to duplicate that.
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post #16 of 24 (permalink) Old 06-29-2019, 09:49 AM
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Replace the rivets with long machine screws and nuts. I remember someone doing it with the dash light dimmer rheostat.
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post #17 of 24 (permalink) Old 06-29-2019, 01:34 PM
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Quote:
Originally Posted by rowdie View Post
Replace the rivets with long machine screws and nuts. I remember someone doing it with the dash light dimmer rheostat.
That would be me... #2 machine screw and nut are a perfect replacement for the long thin rivet. Just need the right length.

Nobody gets out of this life alive.
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post #18 of 24 (permalink) Old 06-29-2019, 03:06 PM Thread Starter
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Well I've got it apart, and found dirty contacts and the brass rotary contact was not making contact with the brass pads for speeds 3 & 4. Bent it slightly and it appears to work. Now the challenge is to put it back together. It looks like there is only room for a 3/32" hole at the largest without weakening the old Bakelite-like plastic. May be a challenge to find screws that small and long, we'll see.
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post #19 of 24 (permalink) Old 06-29-2019, 04:01 PM
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Maybe glue? It's probably ABS "plastic" and there are glues that work.
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post #20 of 24 (permalink) Old 06-30-2019, 05:59 AM
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May be a challenge to find screws that small and long, we'll see.
True Value Hardware has a very nice SAE and Metric selection for problems like this. Don't know if they are in South Central Michigan.
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