Air conditioning works for a while then stops?

Tiny
DAVID FINGERGUT
  • MEMBER
  • 2020 PORSCHE CAYENNE HYBRID
  • 3.0L
  • V6
  • TURBO
  • 4WD
  • AUTOMATIC
  • 23,000 MILES
My vehicle listed above has an AIR-Con that works for a while then stops suddenly. The Porsche dealer has no clue what's happening. Asked Porsche engineers for support but no answer. Trouble codes on the Porsche dealer computer are

U045600 Thermal Management Unit Message Incompatible
U11200 - Data Bus Message Not Accepted
Friday, April 26th, 2024 AT 7:41 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
Yep, with both of these codes it is telling us the "thermal management control unit" is going out. Did Porsche replace it? Please let us know.
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Saturday, April 27th, 2024 AT 9:35 AM
Tiny
DAVID FINGERGUT
  • MEMBER
  • 2 POSTS
They said that they don’t have a proper diagnosis and are waiting for a response from the Porsche engineering team. Where is this module located in the car?
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Saturday, April 27th, 2024 AT 1:37 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
It doesn't show it in AllData or Mitchell 1 sorry, the car is to new still. Please let me know what happens.
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Sunday, April 28th, 2024 AT 11:02 AM

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