Mode door actuator air is coming out of the top of the dash?

AUNT DAWN

MEMBER
2011 INFINITI M37
6 CYL
2WD
AUTOMATIC
52,000 MILES

Air blowing from different vents with no matter what was pushed on controls. Replaced sun load sensor which got all vents blowing for a day. Now side vents and back seat vents are still blowing but rather than air blowing from front vent the air is coming out of the top of the dash from around the speaker grill. I would like to know how to change the door actuator mode to possibly address this problem. Many thanks.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
43,070 POSTS

Yep, the mode actuator will cause this issue, here are the instructions to change it out with the location of the actuator in the images below.

DOOR MOTOR

MODE DOOR MOTOR: Removal and Installation

REMOVAL
1. Remove heater & cooling unit assembly..
2. Remove mounting screws, and then remove mode door motor.
3. Disconnect mode door motor connector.

INSTALLATION
Note the following items, install in the reverse order of removal.

CAUTION:
- Replace O-ring with new ones. Then apply compressor oil to them when installing.
- Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping straight in axial direction.
- Insert piping securely until a clicks is heard.
- After piping connection is completed, pull male-side piping by hand to make sure that connection does not come loose.
- Check for leakages when recharging refrigerant. See: Refrigerant > Procedures > Leak Test.

NOTE:
See: Coolant > Procedures > Refilling (VQ37VHR) or See: Coolant > Procedures > Refilling (VK56VD) when filling radiator with engine coolant.

Check out the images (below). Please let us know if you need anything else to get the problem fixed.

Images (Click to make bigger)