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Old 08-04-2006, 04:25 PM
juanesoto's Avatar
Diesel freak!
Join Date: Mar 2006
Location: San Jose, Costa Rica
Posts: 300
AC switch for an euro W123

Hello everyone,

I'm looking for the complete switch (assembly and knob) of the A/C for an euro W123.


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Old 08-06-2006, 01:00 AM
300SDog's Avatar
gimme a low-tech 240D
Join Date: Jan 2003
Location: central ky
Posts: 3,602
Be more specific.... old 240D or modern style ACC dial?

I've got 1979 240D (USA) parts car with old style manual AC twist knob with blue swirl on it. Is this what you've looking for?
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Old 08-06-2006, 11:19 PM
juanesoto's Avatar
Diesel freak!
Join Date: Mar 2006
Location: San Jose, Costa Rica
Posts: 300
Thanks for your reply 240Dog. You're right, I gave no details about what I need. I need the switch that controls the blower motor speed. In my W123, the system has 3 big knobs. The ones on the right and left side control the heating for each side of the cabin, and the center knob controlls the blower motor. Besides that, there is a small scroll wheel that controls the activity of the A/C unit.

As I said I need the center knob and switch assembly, the ones that control the blower motor speed.
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Old 08-06-2006, 11:25 PM
Registered User
Join Date: Apr 2005
Location: Austin, TX
Posts: 631
Originally Posted by juanesoto View Post
the system has 3 big knobs
That's the old 240D manual A/C control panel
'82 300D Petrol B-G Metallic
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Old 08-07-2006, 02:00 AM
dmorrison's Avatar
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Join Date: Dec 2002
Location: Colleyville, Texas
Posts: 2,694

Fastlane has the unit.

Go here to see the unit, scroll down to pictures 41-47.

The bear is getting the switch out. You will have to remove the AC control panel cover. And the switch panel just above the AC control panel. The pictures on the post above show my daughters cars AC switch holder broken. It is a U shaped plastic piece that is pop riveted to the evaporator box. that piece prevents you from removing the switch out the AC control panel area. You will ahve to remove the upper swithes. Remove the connector, unbolt the front mount bolt and slide it to the side so the switch move towards the front. Then fish it out through the upper switch panel area.

1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
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Old 08-07-2006, 04:41 PM
juanesoto's Avatar
Diesel freak!
Join Date: Mar 2006
Location: San Jose, Costa Rica
Posts: 300
Thanks for your help techguy512 and dmorrison. I'll buy the parts soon and let you know how painful it was to change the switch. Looks its going to be awful!

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