mistertonyn

Just browsed through the original brochure and under
"Standard Equipment/Interior Features", it list that there is a Sun Sensor.
Exactly where is this sensor located and what does it do?

Gracias....

Sathinas

HVAC related. Tells the HVAC if the syun is visible.

SUN. I think I broke my Keybord. be KEYBOARD... ugh

mistertonyn

the auto temperature inside the cabin is still controlled by the temp. you set on the HVAC control.

Sathinas

Yup. It is. But how do you suspect the HVAC system will know if the sun is beating down on the car or if it's not, in order to quickly change airflow velocity and temperature?

mistertonyn

fan speed and stabilize the temp. accordingly. I do remember seeing a small sensor shape on top of dash near middle of windshield.

monsterman75

That small sensor is for the intermittent wipers.

Sathinas

No... The intermittent wipers work off the infrared LED lights behind the rearview mirror... which, I don't think tony has on that car...

Air Marshall Eldritch

Sun Sensor auto-flips my visors down. Does it not do that in your cars?

Sathinas

My sun sensor system does that on my cars well. But I call it "my eyes and arms"

monsterman75

LOL @ Sathinas. And I learnt something new, I had thought the little red bulb on the dash was the wiper sensor.

zheka

I thought that was an emergency parachute escape button

Fabio D

Ok some clarification...

First: The wiper sensor is not in the rear of the rearview mirror (the rear view mirror sensor is a photocell), the wiper sensor are in the superior, center part of the windsield (you can see a black box back the rearview mirror "thats it"

Second: The sensor in the middle of the dash is the SOLAR RADIATION SESOR for the A/C system, when you get solar radiation directly it turns up the fan speed, close the exterior air flap & set the temp more cold!

Fabio Daniel

Sathinas

Uhhh. yes. It is. It's BEHIND the rear view mirror. It's a cluster of infrared LED's (and I presume a couple of infrared receivers as well). They face forward and are right under the windshield. So.. technically, they are behind the rear view mirror. I was not talking about the photovoltaic sensor that is built INTO the mirror.

Solar radiation sensor = Sun sensor. We know this. Thank you.


Fabio Daniel[/QUOTE]

Fabio D

Clarification is for monsterman75 not yours, i think you know that.

Fabio Daniel

Sathinas

Aha. In that case... Clarify away!

We foreigners don't engrish speakem good. LOL.

Fabio D

Hahahahahaha

Fabio Daniel

mistertonyn

automatic intermittent wipers on my car.


Thanks Fabio for the info. !!!!

Kevin Burns

I am having issues with my blower motor. (02 e320 4matic Sedan) The blower works perfect 24/7 in the summer A/C and or heat side. But in winter the blower motor blows when it wants to mostly it wont work and starts blowing whenever it feels like it.
I did a diagnostics code check via the control unit, and it pulled up a code: (EE1 234) Sun Sensor.
Would a faulty Sun Sensor cause issues in winter while using the heat. Again in the summer I have no problem at all whatsoever with the blower motors function. Just winters. I have replaced the regulator.

Any help would be awesome

kajtek1

Sun Sensor helps the computer to adjust the flow between upper and lower vents, but they routinely fail and everybody ignores them as they don't do anything drastic.
Meaning you problem is not related to this code.

Kevin Burns

Thanks much. Now I know why, when I try to direct the airflow to the floor the air still comes out of every vent. Your right because I ignore it too. My issue might be one ground wire buried deep in the spiderweb of wires making a bad contact in cold weather. I checked every wire I could with-in reason and or in reach, everything looks and feels tight with no corrosion. "It's an enigma". That's for sure. Love the car regardless.

bbirdwell

If not temperature dependent, it could be a bad vacuum line that is used to activate the flapper valves. Check the hard line in the engine compartment passenger side rear next to the duo-valve. If the line is broken, just trim the connector out of the line and repair with rubber vacuum hose.