A/C temperature on the driver's side not blowing cold air?

Tiny
BIGTEX64
  • MEMBER
  • 2007 MERCEDES BENZ GL450
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 310,700 MILES
The driver side blows partially cool air while the passenger side blows frigid cold air. Vehicle has a dual control air system. New condenser was installed due to multiple oil spots/leaks. The temperature control unit was replaced because the left temperature switch was not working properly. Still blowing cool/warm on the driver side frontal vents. Suspect the HVAC Heater Blend Door Actuator, but don’t know where it’s located, or what f there is two on the driver side.
Question: How many blend doors are on the driver's side and what are their locations. Do you have a diagram?
Sunday, March 23rd, 2025 AT 7:47 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Yes, there is a left side air blender flap actuator that sounds like it went out, here is the location of the part that needs to be changed. Check out the images (below). Let me know if you need more help :)
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Tuesday, March 25th, 2025 AT 2:12 PM

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