why does my brake light and srs light always come on

Sounds as though there is a problem with the airbags and/or the antilock brakes. Have this checked by a dealership.

the srs sensor in the passanger seat is probably fried, that is why the light is on.

the brake light comes on when its cold cause that filter basket in the master cylinder deforms after time and causes the light to come one when its cold and for the airbag just dont lean on the door panel cause the side airbag sensor is in it and it senses the weight and puts the light on

the fluid level senser gets caught up causing the light to come on