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A/C vent switch randomly from front vent to windshield

Tiny
SELLINGEMAIL619
  • MEMBER
  • 2010 TOYOTA PRIUS
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
When I have the A/C is on front vent, the A/C will randomly switch automatically to windshield vent. The system is on manual not auto and I didn’t touch anything. When I switch it back to front it will be good for a bit and then back to windshield.
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Wednesday, June 19th, 2019 AT 1:38 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,958 POSTS
Hello,

It sounds like the mode blend door actuator (air outlet control servo) is out and needs to be replaced. here is a guide to walk you throughout the repair steps with diagrams and instructions below to show you how on your car:

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (below). Please let us know what happens.
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Thursday, June 20th, 2019 AT 2:09 PM

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