There's a little knockout panel in the center near the base of the windshield...

What is it? I thought it was just a simple knockout panel...but when I yanked it, there's a wire harness attached to it...

This is a source of noise for me...the center panel rubs against the dashboard and created a lot of squeaking... I yanked it to spray a little silicon spray to hopefullly quiet it down...

 

No no no ..It's a sun temp sensor for your auto climate control ... you might want to
clean it before your Auto climate control goes crazy ...

 

I just sprayed the outside with silicone spray... Didn't touch the connectors... I am pretty sure I didn't cause anything that would make the sensor any less/more sensitive... But I will check just in case...

It was making a lot of noise...when the car hit little ripples in the road, the edges of the sensor chaffed against the dash that it is in contact with...so I had to do something to get rid of the noise...

Weird place to place a temp sensor... Usually, you place a temp sensor out of direct sunlight... Instead, Acura places it in one of the hottest areas?

 

There are 3 of them in our car ...one in front of the radiator ... two just underneath the ignition key ( little fender ) ..... and free the SUN SENSOR that you did spray ....
third sensor is there 'cause it's a SUN sensor ....

 

Yeah - it's job is to measure sunlight. You'll notice sometimes that when you go from a shadowy place in thew summer and drive out to where sunlight is directly hitting the sensor - your blower fan will speed up?

That's the sensor doing its job.

As far as I know - there's only one more sensor (a temperature sensor), and it's the little grill-like cover on the dash near your right knee. It's actually hooked to a vacuum line that goes to the fan intake, so the stronger the fan blows - the more air goes over the sensor.

acurabum - where's that 3rd sensor and what's it there for?

 

The 3rd one is an outside temp sensor and it's located and cliped to the front grill
just in front of your radiator ..

 

I bought my car from a friend last year. While he owned it, the cap on the sunlight sensor popped off. He lost the cap sometime after that. I think it looks bad to have that hole up there and also I suspect the cap being gone is making my A/C be a bit sporadic.

The dealership wants more than $40 to buy a whole new sensor. Does anybody know anything about finding just that cap without the actual sensor?

 

Junk yard

 

Apparently junk yards don't inventory that part. I found a yard that thinks they have it but they want a picture. Does anybody have a pic of a sunlight sensor?