EATC Error Code 00 73 06 limited heat/cooled seats

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B Risley

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Having odd problems with AC. Compressor clutch often does not kick in until driving for 5-10 minutes. When it does, the AC output is cold.
The cooled seat option does not stay on when button pushed. It was intermittent about this when we first noticed compressor not always coming on, it would come on once the compressor started cycling. Now it won't stay on.
We have had the AC unit turn off by itself and once started again, it was at like 74 or 75, not the 60 it was running at before.
Self test is producing a 00 73 display, but I can't find anything on what this means.
Also, the main display has flashed TPMS error then door sensor error immediately in a row several times now. We had not experienced these before.
Any clues as to what is going on? (I did try replacing the clutch relay, no joy. Reseated the diode too.)
Thanks,
Brian
 
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B Risley

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Well the 00 73 is a communication error (u0073).
I got a used EATC and put it on and all is working now.
 
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