MB Sprinter Telecomand Falls

Hello, I request help, I have failures in the lights of my Sprinter 313, I fail the command of the Hazards, suddenly I only blinked one side, and now none, and it sounds as if it were a burned blister, now the brake lights remain on when I pray the lights, it is as if it were stepping on the brake pedal, I do not know, I have reviewed everything, any suggestion ???