[W126 Coupe] Strange electrical behavior questions

[Josh Allen]

Markus and Mr. McGoo,

I'll take a look at the push button unit, I have two (or even three, if 
I consider the one in my other car) nearby to play with.

As far as the fuses go, it appears that the only reason I melted the one 
fuse body was due to it being an exceptionally poorly formed conductor 
on the BUSS fuse I purchased from Schucks. 
Before I replaced the fuses just because, I had had no problems.  The 
new, junk, fuses metal bits were not formed evenly, and looked more like 
they were folded over the ends, with a small attempt at putting a dimple 
in them, rather than the conical end that the old fuses had, and that 
the new ones have as well.
No problem there, as I replaced it with one of the older fuses, and then 
ordered a set of ceramic and copper GBC fuses off of one of the vendors 
who stock them. 
Once I had removed the Schucks fuse (with the partially melted body), I 
got the fan function back, until this latest odd behavior started.  
While it was melted, I had no fan at all.

Regarding the high beams, I've checked the bulbs, and the wiring from 
the fuse box forward, by jumpering from the low beam power to the high 
beam power.  The high beams lit, they just won't when selected internally.

On the rear window defroster, mine flashes bright,  but doesn't stay on, 
so I suppose I'll have to see what else is wrong with that system.  
Somewhere along the line, at least!

Thanks for the suggestions all,
-Josh

Markus Meyer wrote:

> Josh,

>  

> As these cars get older the solder joints in the pushbutton unit can 

> cause strange issues, assuming all else is well.  Might be worth 

> swapping out with a known good one to test that theory.

>  

> The euro wipers/sprayers on the lights are supposed to work with the 

> lights on, windshield wipers working.

>  

> You mentioned replacing the fuse once, then again and found it 

> "melted".  That would be worth keeping an eye on.  First thing I'd do 

> is change ALL fuses to the newer ones as they are old by now if 

> original and can often cure electrical gremlins.  Cheap to do even if 

> it doesn't change a thing (about $10 for all fuses).

>  

> Markus Meyer

> mfm at meyerprobateproperties.com <mailto:mfm at meyerprobateproperties.com>

> www.meyerprobateproperties.com <http://www.meyerprobateproperties.com>

> Meyer Probate & Properties, LLC

>

> 484-919-9762

>

>     -------- Original Message --------

>     Subject: Re: [W126 Coupe] Strange electrical behavior questions

>     From: Josh Allen <heyallen at null-ptr.net>

>     Date: Fri, August 22, 2008 4:14 am

>     To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

>

>     Josh Allen wrote:

>     >

>     > 4th:

>     > How is the defroster supposed to work? I can select it, and it

>     > momentarily gets brighter on the upper position, but nothing

>     seems to

>     > say that it's working, and it doesn't seem to defrost anything.

>     >

>     Err, I mean to ask about the rear window defroster. The front one I'm

>     fairly sure I understand. (It just wants to play with my hed

>     currently. :)

>

>     -Josh

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