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Instrument Backlighting

Posted: Fri Jul 29, 2011 7:26 am
by Sootchucker
On my drive to work this morning, it was a little overcast so the headlights came on automatically (I've VCDS the lights to back to fully auto with the sidelights only via LED bulbs as DRL's). As it wasn't too dark, I turned them off from the switch and just relied on the DRL sidellights.

My instrument pack at the time was quite brightly lit, and obviously all the other dash lights (climate control panel etc) were also lit. When I turned off the headlights, as normal the instrument backlight stayed on, and all other dash lighting extinguished (again as normal).

However after a couple of miles, I noticed that my instrument backlighting had gone very dim, not completey off, but just like I had turned the rheostat down, then a couple of minutes later, they came back on at full brightness ?

Is this normal behavoir, i.e. does the Rocco use the lightsensor to control the illumination levels automatically of the dash lights, or do I have a loose connection or something ?

Re: Instrument Backlighting

Posted: Fri Jul 29, 2011 11:15 am
by RickG
I believe the brightness is controlled by the light sensor. On mine the dash lighting definitely gets much brighter in the sunshine and after dark just the needles are backlit.

No doubt an expert will correct me if I'm talking rubbish (which has been known).

Re: Instrument Backlighting

Posted: Fri Jul 29, 2011 9:46 pm
by kenti
I think RickG is correct, that the instrument brightness is controlled by the lights sensor. I've experienced this my self.
Nothing to worry about :)

Re: Instrument Backlighting

Posted: Fri Jul 29, 2011 10:28 pm
by ayeaye
But it's still crap - only way I know if my headlights have come on is if the aircon buttons are lit up.
On older VWs it was a lot easier to tell.

Re: Instrument Backlighting

Posted: Sat Jul 30, 2011 9:20 am
by ZephyR
ayeaye wrote:But it's still crap - only way I know if my headlights have come on is if the aircon buttons are lit up.
On older VWs it was a lot easier to tell.
Or get up the arse of the car in front and look at the reflection in his rear bumper :lol: