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Old 02-13-2001, 03:05 PM
Registered User
Join Date: Feb 2001
Location: BC, Canada
Posts: 378
I have two seat heater switches that are not working
well. I haven't been able to find a price for them.
Do I have to go to MB? What would they cost? One
of mine is intermittant and the other just doesn't
work, (although the light works).

1967 250SL
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Old 02-13-2001, 04:02 PM
MBenzNL's Avatar
Join Date: Jan 2001
Location: the Netherlands
Posts: 1,417
Are you sure that the switches are no good..(since the control light is working).
Just dive underneath the seats and try to find power at the heater plugs with a test light.

If the control light is illuminated, the switch does hand over the power...

...just a thought...
1990 300SL-24
1993 C250D
with a minor 600+k kilometer
(the Netherlands)
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Old 03-12-2001, 11:36 PM
Registered User
Join Date: Feb 2001
Location: BC, Canada
Posts: 378
The heaters work, just not the switch. I just ordered the
switches from Partsshop here for $31.50 each. The part
is 126 820 68 10.

1967 250SL
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Old 04-01-2001, 11:02 PM
Registered User
Join Date: Feb 2001
Location: BC, Canada
Posts: 378
Just a quick update; I received the switches from Partsshop
and they turned out to be the wrong ones. My mistake because I didn't
provide my chassis number. It turns out that MB changed the
part in early 1986. I have a July 1986 car. The early switches
are larger W124 units. Mine are smaller W126 ones. Got the
new ones and they work fine. With the new ones installed, I
took the old ones apart and saw the contacts and points. If
you have trouble, first try to clean the internals with a good
contact cleaner. It might work. If not, the new switch will.

1967 250SL
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