Perhaps the high beam part of the lights are rs
A weak alternator and/or battery.
Headlights have two filaments, one for dim, one for bright. From your description it appears that one of the high beam filaments is burned out. Replace the bulb.
The Kia Sorrento instrument panel lights go on and off with the headlights. The headlights go on with an automatic daylight sensor.
turn the dimmer up.
change the head light swicth
Because it is British.
the dash and radio lights are supposed to dim when the headlights come on. Make sure you have the brightness of the dash lights turned up as much as possible.
Often this type of behavior is caused by a bad ground for the lighting circuit. Check the ground circuit for the brake lights.
Turn on your headlights and try to sart the engine. If the lights go out the battery is probably bad. The contacts on the starter solonoid don't cause it to click.
Brake lights should NOT be effected by the headlights. Brake light function is completely independent of the headlights. Assuming you are not refering to the tail lights, or marker lights, which are supposed to come when the head lights are turned on. Not having brake lights when the head lights are on is a big safety problem and should be corrected.
It means your bright headlights are on. You can control bright or normal with the turn signal lever. On some vehicles you just pull it gently towards you until it clicks to select bright or normal. On some newer models you push it gently away from you until your bright lights go to normal mode. Normal driving is with the blue light off.