A/C and heat issue with button
09-10-2023, 04:33 PM
#1
Newbie
Thread Starter
A/C and heat issue with button
When I press button to change from feet to straight on to defroster it doesn’t change. I have to run through the 8 cycles 10+ times before it actually goes to defrost window
09-11-2023, 08:57 PM
#2
MBWorld Fanatic!
Maybe the contact/switch underneath is getting stuck and not returning to its original position. Im not really sure how they work, but try to see if the button is just floating in there and not being fully depressed, if that makes sense. Maybe dirt, dust, wear.
09-12-2023, 02:02 PM
#3
MBWorld Fanatic!
Join Date: Apr 2019
Location: Silicon Valley
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MY'14 W212 M276 3.5NA @60kMi
Faulty AAC actuators
You'll need a scanner or Xentry to figure which of these modules has developed poor connections.
The fix to replace faulty modules can be labor intensive ... a temporary workaround is to try to exercise them using the HVAC controls.
🤞
