I am having problems with my 09 200 HVAC. From startup after sitting a while (varies) temps default to 75 on both sides. I can set lower temps and AC works fine. Also upon startup the Auto is on but no temps show up on screen. After a bit, 30 to 60 seconds the auto goes out, If I turn auto on temps show up and fans start and all is well. This has just showed up in the last month or so. Does the HVAC have a memory battery that could be dead?
HVAC problems on 200 Series (1 Viewer)
- Thread starter SteveL
- Start date
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Did you recently change the cabin filter? It sometimes acts like this when the recirc flap is damaged.
- Thread starter
- #3
no I did not, but will check it out.
Put the system in RECIRC before accessing the filter to see if the mechanism works.
No separate battery, but how is your main battery? Low voltage could cause the default settings like that. It’s possible you need a new battery or cleaned up terminals.
Mine had the same behavior and turned out to be the cabin filter wasn't installed correctly. Luckily the filter door wasn't broken like others experienced.
Mine does exact thing
For 6 months been trying to figure out if someone broke recirc door in filter
cant figure it out
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my rear fans also make a “fluttering noise” - almost like a paper is stuck in the vent - cant figure that out
For 6 months been trying to figure out if someone broke recirc door in filter
cant figure it out
——-
my rear fans also make a “fluttering noise” - almost like a paper is stuck in the vent - cant figure that out
I had the same issue - I think the cabin filter pleats need to run 'east to west' with your truck. Going from memory here: turn your truck on, hold the DISP button down and turn your parking lights on/off 3 times - when the service menu shows up press the Clear button and you should be GTG.
Follow the procedure I detail in this video to read the HVAC codes. Then reset the HVAC codes. Then drive around for a few miles with the AC on and then read the codes again.
Sometimes these type of problems get resolved with a simple reset. But if they don't at least you will have the trouble codes to chase down the actual issue.
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Sometimes these type of problems get resolved with a simple reset. But if they don't at least you will have the trouble codes to chase down the actual issue.
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