low brake fluid level,
e-brake switch problem,
yes! sensors not replaced!
physically check oil level, if it is correct, suspect the oil level sensor.
SRS light blinking indicates airbag problem. a scan will help you decode the prob.(there are no shortcuts on this one- a computer drives the SRS system- it will take another computer(scanner) to decode the problem, and spell it out in a language we can all understand... ) :-)