All Things Mk5 > How to Guides / Troubleshooting

Anyone elses Auto lights coming on at odd times when its bright sun?

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jedi-knight83:
Driving home from Central london today between 2:30-4pm. Plenty of light.. went under a long bridge / very short tunnel and the lights came on then back in the daylight would not turn themselves back off... Turned them off manually for a while then turned them onto auto again maybe 15 mins later and they stayed off then on the m11 they decide to come on again and stay on all the way home.

It did it the other day too at about 4pm when it was plenty light enough.

Spoke to a friend with a GTI and he said his also come on at odd times?

Common fault with the light sensor? Or just a weird set up that is VERY sensitive to shadow?

Dannyboy88:
I think they auto come on when you go over 80mph for a long period because thats what they do on my jetta dunno if its a safety feature so when your at highspeed you get seen by others. I might not be right but thats my outlook on it

rich83:
They come on when your doing about 90ish

jedi-knight83:
haha whoops. and now you know how fast i was going...

ub7rm:
Also in winter sun, sunset / sunrise they will behave a bit oddly because it compares the light reading from the front sensor and the rear sensor and decides if the lights need to be on.  Hence why sometimes when the sun is low in the sky and you're driving towards it (and thus have plenty if not too much light) the lights are on (for the benefit of oncoming traffic I presume).

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