My lights were coming on when my alternator was going out. Test your alternator and charging system and replace accordingly.
You probably have a faulty brake light switch
my 05 Chevy impala brake light come on when my vehicle is turned off killing my battery.
Kia vehicles tend to turn these lightson together when there is a charging issue such as the alternator, battery or cable connections.
Dead Battery
turn the lights off during the day and when you leave the car
No , the rear brake lights do not turn on when you use your parking brake , just the brake light on your dash is supposed to come on
Brake Lights do not turn offUsually this is caused by the physical position of the brake light switch not being adjusted properly.
In many cases, the brake light and the turn signal use the same bulb.
With some Nissans, the brake light and battery light go on when the alternator has failed. Why Nissan designed the system to turn on both lights when the alternator fails is a good question. For the 2001 Nissan Maxima, you can find the interconnection of the brake light indicator to the battery indicator on page EL-131 of the factory service manual (there is a diode from the brake light to the battery light). I've read on the web that automakers light multiple lights to ensure they get your attention for critical faults. When your alternator dies, you're on borrowed time; the engine will die when the battery finally goes dead (since it's not being charged). If you find yourself in this position, turn off all unnecessary electrical loads and get the alternator replaced/repaired ASAP. Before going to the mechanic, there is one thing you can check yourself; there is a fuse that usually label ALT (for alternator). Find this fuse and make sure it's ok.
There appears to be a problem with 2001 Hyundai Accent electrical system. IE: When I turn on my ignition, the radio comes on. Have checked.
You may have disconnected the earth return or battery wire for the brake lights. This is only a possible solution if the brake lights do not use the frame as an earth return directly adjacent to the brake light housing. Normally the switch operated by the brake pedal or lever connects and earth to the brake circuit to light the brake lamp.
If it is a single bulb, it is probably the bulb. Many tail light bulbs have two separate filaments, with the turn/brake being much brighter than the marker light. The tail light and turn/brake circuits are completely separate.