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Discussion Starter #1
I have a 2000 DTS. A/C works fine when outside temperature is mid 80 and below. Above mid 80 and 90 degrees outside A/C blows hot air through all vents. Any ideas? Thanks Guys. :)
 

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White Diamond '03 DHS (with DTS floor shift)
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86,987 Posts
Start by pulling the DTC's. Might just be low on refrigerant.
 

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Discussion Starter #3
I get a B0429 code bu thats the rear air mixer. Also even at moderate outside temperatures the left side blows warmer than the right side. Swapped over left and right temp sensors, made no difference. Refrig is full. It could be the Instrument Panel Control module but that's a dealer job because it the manula says it has to be calibrated. Do you think it might be the sun sensor? Thats easy to replace and may not cost much.
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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I would suspect a DTC if the sun load sensor was bad. How do you know that the refrigerant is full? Warmer left side temps are indicative of low refrigerant on a dual zone system.
 
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