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No guarantees are made on the results, and anything you do yourself is
at your own risk.
Temperature Sensor Cleaning
By Wes Stinson
Written by Jesda Gulati
This
neat and simple trick will improve AC performance and efficiency. You
will need a flathead screwdriver, q-tips, rubbing alcohol, and
possibly an air can.
Below is a photo of the defroster switch. To the left of the switch is
a metal grille, and inside that is the ambient temperature sensor that
communicates cabin climate conditions to the car.
This is how to properly insert the screwdriver:
Be very careful not to leave cuts in the soft panels or
cracks in the plastic that surrounds the switch.
Once you pop it out a little, you can go onto the side and pop it out
more. Some suggest leaving a second screwdriver inserted in the bottom
while popping the switch out on the right.
Here are supplemental removal tips from another NICO member:
"The plastic bezel containing the screen and the switch - if you want a little insurance wrap the flat bladed screwdriver w/ masking tape about 3-4 wraps 1/4" back from the tip it's less likely to cut the leather then. It pops out pretty tough -another way is to use a smaller tool to lift it then a trim tool or small prytool w/a bent end a/k/a fulcrum to get it to pop(USE TAPE!)."
--squeefoo, 1990 Infiniti Q45
Below is the switch removed, and inside that hole is the temperature
sensor.
Click on the photo
above to zoom in. If you shine a flashlight inside, you will see
an object that looks like a tiny wishbone. That is the sensor. If you
use a q-tip with rubbing alcohol, you can very gently clean
underneath and around it. An air can may be effective as well with
less risk of breaking the sensor -- it is small and fragile.
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