Rear brake frozen. Assuming you do not have a heat source, small heater to aim at it for a while. If not that, I would think you could use some windshield deicer. I assume you do not have disc brakes on the back. There should be an access plug on the back of the wheel plate. On the back side it is usually an oval rubber plug at the top or bottom, varies car to car. Spray the deicer in up or down and I would think this might do it. Depending on age of vechicle, the cable running to the brake may be the problem.
its in your transmission
could be the cylinder on the brake caliper is locked up could be the cylinder on the brake caliper is locked up
Brake fluid should have low freezing point
I think you need to supply some more info. Make? Model? Year? Locked after being parked? ...or while driving? Below freezing? Just any old schematic would likely be of NO value!
It is a good possiblity the brake hose feeding that wheel is at fault.
If it is locked up then replace that caliber and remove and replace all brake fluid in the system.
the brake interlock press on the brake to release it
The switch is out of adjustment.
It could be a bad brake light switch. You have to step on the brake to shift it out of park.
To prevent your brakes from freezing in cold weather, you can park your car in a garage or cover the brakes with a tarp or blanket overnight. Additionally, you can apply a thin layer of anti-freeze solution to the brake components to help prevent freezing. Regularly checking and maintaining your brake system can also help prevent freezing in cold weather.
very care fully or u will brake the flywheel
Front emergency brake? Do you mean a frozen cable? If front brake is locked may be a frozen caliper Emergency brake tied to rear brakes only