Thread: W123 Cruise Control Will Not Shut Off
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Old 09-24-2011, 11:38 AM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
From what I gather, in the amplifier schematics, there is a problem in the amplifier. There is a K1 relay that unlatches whenever cancel is selected or the brake switch is engaged. Either this relay is failed or there is even the possibility of a part snafu.

On the second amp, holding the switch to off causing the cruise to cruise to quit, pretty much says the stalk switch is working. Without going into a lot of detail, the amp is just acting like Decelerate "electronically" rather than Cancel.
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84 300SD 350K+ miles ( Blue Belle )
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