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Car Forum / Mercedes-Benz Cars / May 2007

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Driver door, no interior light, but key warning sounds? 1979 W123

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Tom Plunket - 13 May 2007 06:47 GMT
I keep meaning to ask y'all this one too...

So my driver-side door opens, and the interior light doesn't come on.
But the passenger-side one does.  One night, I figure what the heck,
I'll just swap switches and get a new one for the passenger side "one
day."

Pulled the driver-side switch, and it tested ok.  Somewhat boggled and
having started the job too late at night, I put it back together and
didn't worry about it.  Then I noticed, if I leave the key in the
ignition after driving somewhere, and open the door, I get a buzzer 'til
the key comes out.

So, it appears that part of the switch's function works, but part
doesn't.  Does anyone have any ideas what I'd look at for this one?

thanks,
-tom!

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-->> T.G. Lambach <<-- - 13 May 2007 06:54 GMT
The driver's door switch to the overhead light is wired through the seat
belt / key-in-ignition / headlights-on warning buzzer. When you learn
what that device costs you'll know why it was not replaced.
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© 2007 T.G.Lambach. Publication in any form requires prior written
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Tom Plunket - 14 May 2007 18:47 GMT
T.G. Lambach wrote:

> The driver's door switch to the overhead light is wired through the seat
> belt / key-in-ignition / headlights-on warning buzzer. When you learn
> what that device costs you'll know why it was not replaced.

So all of those other functions could work fine, and just the overhead
light function be busted?  I'll have to poke around for one of those
then, or maybe hotwire it all somehow since the passenger door activates
the overhead light just fine.

thx,
-tom!

--
 
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