you dont say what model hilux youve got..if you drove thru water and the problems started after this then moisture is probably the cause of youre issue..firstly check the battery terminals make sure theyre clean and tight and earth to body ..with the starter do you hear a click when you turn it over,if so its the solenoid,if its got an external solenoid you need to check the cable from the battery to starter connections to make sure theyre tight,if its pre engaged ,solenoid internal to the starter,take it off the vehicle pull it apart and clean the actuator and terminals or replace with a recon/new unit the brake light problem couldbe the switch on the rear of the pedal,either water is shorting it out or mud and crap in it is making it sticky good luck...wheres the thumbs up emotion on this site..
