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E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Air Con!!

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Old May 19, 2004 | 10:28 PM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
Air Con!!
I spent a long time today with my mechanic working on the AC. We got it ti work by supplying outside power to the compresser. We chnaged a relay switch and it worked for a moment. \The mechanic says that the compresser is fine (we also added two cans of Freon) but the compressor is not getting poer either from the inside panel or from under the hood from the relay switch to the compressor.

Has anyone had expierence with this air conditioning problem????
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Old May 20, 2004 | 09:26 AM
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1994 E320
When you say "relay switch" are you referring to the black box next to the KE control unit (behind the pass. side firewall)?
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Old May 20, 2004 | 10:10 AM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
no this is a silver switch, I see the black tall box in that location and I am thinking that this is the problem...its callede a MAS.
your thoughts?
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Old May 20, 2004 | 10:42 AM
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1994 E320
The black box is the "Klima" control unit. It compares the speed of the compressor to the speed of the engine, and if a large difference is detected, the Klima turns off the compressor. It can only be restarted by cycling the ignition key.
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Old May 20, 2004 | 11:49 AM
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From: Imperial Beach CA
1995 S320 and 1995 S500
whats does "cycling the ignition key" mean????
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Old May 20, 2004 | 12:12 PM
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From: Middlefield, CT
1994 E320
Turning the key off, then back on.
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Old May 20, 2004 | 05:19 PM
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Gman91932
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From: Imperial Beach CA
1995 S320 and 1995 S500
I replaced the MAS climate control unit...and that was the FIX! We have cold air!

Gman
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