There s a small sensor like thing at the back of the rear view mirror on my FL octavia anyone have any ideas as to what it is ???

I have rain and light sensor and auto dimming rear view mirror !------------(the rain and light sensor is at the windshield end of the rear view mirror and the auto dimming sensor is at the front facing towards the driver )

Is it for the high beam assist??? ( I don't have it activated )

And if it is for the High beam assist can it be activated via vcds?

Thanks !

I have the same and my guess is that it's for the auto dimming rear view mirror to have a comparison ambient night light from the front versus the light level from the rear to know how much to dim the mirrors

That would be my guess as well

I would say that it is for the auto lights.

Edited 5 March, 201115 yr by stringbean

I would say that it is for the auto lights.

The sensor for the auto lights is on the windscreen, the same position as for the auto wipers, the OP is referring to the sensor on the back of the actual rear view mirror.

I think it is the envy sensor. If you look at the rear view mirror and the green led is on then someone around you is envious . . .

The auto dipping mirror has 2 sensors, one facing the back of the car and another facing the front. It uses the light difference between these 2 sensors to calculate how much to dip the mirror by.

<br />The auto dipping mirror has 2 sensors, one facing the back of the car and another facing the front. It uses the light difference between these 2 sensors to calculate how much to dip the mirror by.<br />

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Thanks for the answers,

Ok so it's kind of a light sensor ........!! Anyway it can be used to activate high beam assist or ....that requires more hardware & wiring ?

I don't think any Skoda has main beam assist, I've only ever seen it mentioned on much more recent and expensive cars (BMW 7 Series, Audi A8, Mercedes S Class etc.)

Saying that, Wikipedia claims this technology will make an appearance on the 2011 Passat...

Introduced on the 2011 Volkswagen Touareg: Dynamic Light Assist, on the 2011 Volkswagen Phaeton and on the 2011 Volkswagen Passat.

Adaptive highbeam is a new headlight control technology that automatically and continuously adapts the headlamp range to the distance of vehicles ahead or which are oncoming. Introduced in the new generation Mercedes-Benz e-class in spring 2009[1]. It practically eliminates the difference between high and low beam, fusing them into one continuous adapting beam. Unlike conventional automatic headlight dimmers which simply switch between high beam and low beam, the new system continually adjusts the beam so that the headlamp cone falls just in front of other vehicles, at the same time always ensuring maximum possible range without dazzling other road users[2].The range of the beam can vary between 65 and 300 meters, depending on traffic conditions. Headlamps are adjusted every 40 milliseconds thanks to a camera on the inside of the front windscreen which can determine distance to other vehicles.

The glare-free high beam[6] is the newest adaptive technology and will be introduced during 2010 in series production vehicles. Unlike the above mentioned standard adaptive high beams, the newest system continually adjusts not only the range of the high-beam, but also its pattern. The beam pattern changes its direction continually so that vehicles in front are not being illuminated, while the area surrounding them is being constantly illuminated at high beam intensity[7]. This constantly changing beam pattern requires complex sensors, microprocessors and actuators, because the vehicles which must remain outside the light cone are moving. LED technology is more suited for this than Bi-Xenon HID lamps because it consists of many elements which can individually switch on/off.

Edited 5 March, 201115 yr by silver1011