Sun Sensor. What is this ???
Thread Starter
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1999 E320 & 2008 S550 Designo
Sun Sensor. What is this ???
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....
"Standard Equipment/Interior Features", it list that there is a Sun Sensor.
Exactly where is this sensor located and what does it do?
Gracias....
Thread Starter
Senior Member
Joined: Mar 2008
Posts: 340
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1999 E320 & 2008 S550 Designo
ok...am I missing something here...the sun sensor senses the sun and then what??
the auto temperature inside the cabin is still controlled by the temp. you set on the HVAC control.
Thread Starter
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1999 E320 & 2008 S550 Designo
interesting...I thought it was a temp. probe that reads the cabin air and adjust the
fan speed and stabilize the temp. accordingly. I do remember seeing a small sensor shape on top of dash near middle of windshield.
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210 55
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
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
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S65
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[/QUOTE]
not yours, i think you know that.
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1999 E320 & 2008 S550 Designo
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Joined: Jul 2017
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From: kenton, Ohio
2002 E320 w210
Sun Sensor code 1234
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
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
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From: V E G A S
1922 Ford Model T / no OBD
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.
Meaning you problem is not related to this code.
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Joined: Jul 2017
Posts: 13
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From: kenton, Ohio
2002 E320 w210
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.
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From: Republic of Texas
'99 and '05 E55 AMG
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.
