hawke94

Anyone know what blue circled sensor is? Is it the sensor for auto high-beam?

morski

No its the light sensor for the auto dimming rear view mirror and door mirrors. Just a standard photocell thats all

hawke94

Thanks! I know the other cameras are for ACC and ALA but which is which? Any cameras or sensors for the HUD in the mirror housing?

morski

Camera in front of the mirror is for HBA. Triangular camera above mirror is for lane assist and ACC. ACC radars are in the side lower grilles. Night vision camera is in the front rings. Side assist is in the rear bumper sides. No cameras are used for the HUD

hawke94

Very helpful. Thanks very much!

Golan Remi

@morski There is a 3rd camera or sensor between the HBA and ACC. What is that?

Peterman1

I am so glad I found this thread, I'll have to just move my dash cam to get rid of my constant blue mirrors. I thought the camera on the mirror was the dimming sensor

Wuplur

you referring to the rain/light sensor?

Golan Remi

I guess, but now it is becoming even more confusing:
1. Sensor on and behind the rearview mirror is used to measure the lights for the instrument cluster and ambient light. (marked in blue)
2. Sensor between the rearview mirror and windshield measures the light for the High Beam Assist and also humidity.
3. "Triangle" sensor on the top is used to for the Audi Lane Assist.
4. Sensor between the ALA and HBA, also measures light (for daylight running lights?) but it also serves as the rain sensor. (marked in yellow)
5. The front of my dashboard has something that looks like the old dome sensor for daylight running lights, which contradicts with #4.




So really a lot of light sensors

Wuplur

#1 in conjunction with the sensor on the front near the button is used for the anti dazzle rear view mirrors, there is a small sensor that is difficult to see in the cluster that adjust the brightness for the ambient lighting, MMI, and cluster.
#4 correct
#5 is the sun sensor for the climate control system