Originally Posted by BizBo
I have a 3 day old Grand Cherokee 2015 UK version and I updated to the latest uconnect s/w today.
Since doing this I have noticed the auto headlights want to come on when it gets overcast and cloudy, they seem to stay on forever.
I was surprised they came on as no other car on the roads had their lights on and even cars I would be sure of having auto lights were not on either.
Is there any tweak that can adjust or change the sensativity of this, I dont mind them coming on when it gets dark or dusk, but just cloudy seems excessive.
Several things can affect when the headlights actually trigger to come on:
1) The most obvious one is it's getting dark or not very light yet. They should trigger on at dusk and turn off shortly after dawn. The idea is to have them on during periods when contrast is low, but its still not yet dark (or not fully light). Those (along with sunrise and sunset, when the sun is in peoples eyes) are the times when the most failure to yield accidents occur.
2) Heavy cloud cover or dark rain clouds can fool the sensor into tripping the lights on.
3) Trees overhanging the road or otherwise creating shade can trigger the lights.
4) The direction you are heading in when any of the above conditions may apply. Heading away from the sun so the roof blocks some of the light can amplify already dim conditions. That can be why your lights might come on, but oncoming traffic lights won't.
5) Turning your wipers on. I don't know about the UK, but US models will turn the lights on when the wipers are on in either full or delay modes to comply with "Wipers on/Lights on" laws in some states.
6) Things on the dash near or covering the sensor can also fool it.