When I have the high beams on and I use the turn signal it shuts off the high beams every time.
Do you have the auto sensing high beams? Maybe they programmed it that way to keep you from blinding someone who is around the corner before the sensor would auto dim the high beams. I'll have to pay more attention to mine to see if it does the same thing.
Sean in PA
2011 Jeep Grand Cherokee Overland
5.7 Liter Hemi V-8
Adaptive Cruise & Blind Spot Monitoring